http://www.ngdc.noaa.gov/metadataMetadata Updated in the last 90 Daysen-us2013-05-24T01:59:47.354-06:00http://blogs.law.harvard.edu/tech/rssXSLhttp://www.ngdc.noaa.gov/image/nesdisngdcleft.gifhttp://www.ngdc.noaa.govNGDC NOAA emblem144144Anna.Milan@noaa.govAnna.Milan@noaa.gov1 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/me2006_fema_cumberlandyork_m2479.xml&view=xml2text/xml-to-text-ISO&altview=none In the fall of 2006, Sanborn Map Company was contracted by Camp Dresser McKee, Inc (CDM) to execute a LiDAR (Light Detection and Ranging) survey campaign in the state of Maine. LiDAR data in the form of 3-dimensional positions of a dense set of masspoints was collected for the 584 sqaure miles of Cumberland and York Counties. This data was used in the development of the bare-earth-classified elevation point data sets. The Leica ALS-50 LiDAR system was used to collect data for the whole survey campaign. The LiDAR system is calibrated by conducting flight passes over a known ground surface before and after each LiDAR mission. During final data processing, the calibration parameters are inserted into post-processing software. Six airborne GPS (Global Positioning System) base stations were used in this project. A new point was set at the Portland Airport (501) The other base stations were set up at National Geodetic Survey (NGS) markers. NGS Monuments 901- PID: OC0229 and 801 - PID: OC0230 are located at the Biddeford Airport. The other existing NGS monuments used in the network are point 701 - PID: AJ2697, located on Bailey Island, point 702 - PID: OC0429, located at Fort Constitution, and point 703 - PID: OC0478 located southeast of York Beach were tied to the other three points to create a GPS survey network. The coordinates of these stations were checked against each other with the three dimensional GPS baseline created at the airborne support set up and determined to be within project specifications. Leica ALS-50 LiDAR Scanner Parameters: Pulse Rate: 50,000 hertz Scan Frequency: 36 hertz Scan Width (Half Angle): 18 degrees Flying Height: 1,200 meters above ground level Flying Speed: ~120 knots mike.sutherland@noaa.gov 2013-05-17T16:00:00.00-07:00 gov.noaa.csc.maps:me2006_fema_cumberlandyork_m2479 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/me2009_usgs_androscoggin_m2480.xml&view=xml2text/xml-to-text-ISO&altview=none USGS Contract Number: G10PC00026 USGS Task Order: G10PD01737 LiDAR was collected at a 1.0 points per square meter (1.0m GSD) for the county of Androscoggin, Maine while no snow was on the ground and rivers were at or below normal levels and prior to leaf-on conditions. mike.sutherland@noaa.gov 2013-05-17T16:00:00.00-07:00 gov.noaa.csc.maps:me2009_usgs_androscoggin_m2480 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/me2009_fema_fortkent_m2481.xml&view=xml2text/xml-to-text-ISO&altview=none Camp Dresser McKee Inc. contracted with Sanborn Map Company to provide LiDAR mapping services for Fort Kent, Maine. Utilizing multi-return systems, Light Detection and Ranging (LiDAR) data in the form of 3-dimensional positions of a dense set of mass points was collected in spring 2009 for 187 square miles along the St. Johns River and the Fish River. The Leica ALS-50 LiDAR system was used to collect data for the survey campaign. The nominal point spacing of this data set is 1.4 meters. Leica ALS-50 LiDAR System Acquisition Parameters: Average Altitude: 1400 Meters above ground level Airspeed: ~120 Knots Scan Frequency: 36 Hertz Scan Width Half Angle: 20 Degrees Pulse Rate: 76,200 Hertz mike.sutherland@noaa.gov 2013-05-17T16:00:00.00-07:00 gov.noaa.csc.maps:me2009_fema_fortkent_m2481 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/wa2001_pslc_clallam_m2482.xml&view=xml2text/xml-to-text-ISO&altview=none TerraPoint surveyed and created this data for the Puget Sound LiDAR Consortium under contract with Clallam County. The data covers an area of approximately 524 square miles that extends from the northeastern corner of the county to an area past Joyce. It also cover an area in the vicinity of Forks to La Push. mike.sutherland@noaa.gov 2013-05-17T16:00:00.00-07:00 gov.noaa.csc.maps:wa2001_pslc_clallam_m2482 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2012_USACE_PostSandy_m2478.xml&view=xml2text/xml-to-text-ISO&altview=none These files contain classified topographic and bathymetric lidar data as unclassified valid topographic data (1) and valid topographic data classified as ground (2), Classes 1 and 2 are defined in accordance with the American Society for Photogrammetry and Remote Sensing (ASPRS) classification standards. The data were collected on November 16, 2012 and cover portions of the following counties: New Jersey - Bergen, Essex, Hudson, Middlesex, Monmouth, Ocean, Union New York - Bronx, Kings, Nassau, New York, Queens, Richmond, Suffolk, Westchester These data were collected by the Coastal Zone Mapping and Imaging Lidar (CZMIL) system. CZMIL integrates a lidar sensor with topographic and bathymetric capabilities, a digital camera and a hyperspectral imager on a single remote sensing platform for use in coastal mapping and charting activities. Native lidar data is not generally in a format accessible to most Geographic Information Systems (GIS). Specialized in-house and commercial software packages are used to process the native lidar data into 3-dimensional positions that can be imported into GIS software for visualization and further analysis. Horizontal positions, provided in decimal degrees of latitude and longitude, are referenced to the North American Datum of 1983 (NAD83). Vertical positions are referenced to the NAD83 ellipsoid and provided in meters. The National Geodetic Survey's (NGS) GEOID12A model is used to transform the vertical positions from ellipsoid to orthometric heights referenced to the North American Vertical Datum of 1988 (NAVD88). For data storage and Digital Coast provisioning purposes, the NOAA Coastal Services Center converted the data from orthometric heights referenced to the North American Vertical Datum of 1988 (NAVD88) to ellipsoid heights using the NGS GEOID12A model. mike.sutherland@noaa.gov 2013-05-17T16:00:00.00-07:00 gov.noaa.csc.maps:2012_USACE_PostSandy_m2478 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/wa2000_pslc_lowlands_m2485.xml&view=xml2text/xml-to-text-ISO&altview=none TerraPoint surveyed and created this data for the Puget Sound LiDAR Consortium under contract. The area surveyed is approximately 1,146 square miles and covers part of Kitsap Peninsula, the Seattle area north to the King-Snohomish county border and east to Snoqualmie. The data is broken down into USGS quarter quads and then into 25 tiles within each quarter quad. All data was collected during ideal conditions (leaf-off). The LAS files were derived from all returns ASCII files contain the X,Y,Z values of all the LiDAR returns collected during the survey mission. The standard GPS time, scan angle, intensity and return numbers of each point were preserved in the conversion from ASCII to LAS. The LAS files are unclassified. Futher details are available in the Process Steps below. This dataset was flown in 2000 with a 50% overlap between flight lines. Due to the overlap the nominal point spacing of the dataset is 1.0 meter. Several small areas in this project were reflown in 2002. mike.sutherland@noaa.gov 2013-05-17T16:00:00.00-07:00 gov.noaa.csc.maps:wa2000_pslc_lowlands_m2485 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/Collection/iso/xml/Hazard_Images_Database.xml&view=xml2text/xml-to-text-ISO&altview=none Photographs and other visual media provide valuable pre- and post-event data for natural hazards. Research, mitigation, and forecasting rely on visual data for post-analysis, inundation mapping and historic records. Instrumental data only reveal a portion of the whole story; photographs explicitly illustrate the physical and societal impacts from an event. This resource provides high-resolution geologic and damage photographs from natural hazards events, including earthquakes, tsunamis, slides, volcanic eruptions and geologic movement (faults, creep, subsidence and flows). The earliest images date back to 1886. Each event also links to NGDC?s Global Historical hazards databases, which provide details for these events. Heather.McCullough@noaa.gov 2013-05-16T16:00:00.00-07:00 gov.noaa.ngdc:Hazard_Images_Database http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/ak2009_aerometric_coastal_m1456.xml&view=xml2text/xml-to-text-ISO&altview=none This delivery contains point cloud data in LAS 1.2 format, with Absolute GPS Timestamps. No classification has been completed on these data. The nominal point spacing is 1.2 meters. The following are the collection parameters and equipment used to create this data set: Aircraft: Piper Navajo (N6GR) and Cessna 320 (N3443Q) Lidar System: Optech ALTM Gemini (03SEN145 and 07SEN201) Approximate Collection Altitude (Above Mean Terrain): 1800 meters Ground Speed: 150 kts Pulse Rate Frequency: 70 kHz Mirror Scan Frequency: 32 Hz Scan Angle (+/-): 20 degrees Beam Divergence: Narrow (0.25 mrad) Accuracy statements are based on areas of moderate terrain, with points temporarily classified as ground. Diminished accuracies are to be expected in areas of extreme terrain and dense vegetation. The accuracy of each point is expected to meet the vertical accuracy standard, derived products may be less accurate in areas of extreme terrain and dense vegetation due to a lesser number of points defining the ground in these areas. mike.sutherland@noaa.gov 2013-05-15T16:00:00.00-07:00 gov.noaa.csc.maps:ak2009_aerometric_coastal_m1456 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/me2010_usgs_coastal_m2477.xml&view=xml2text/xml-to-text-ISO&altview=none USGS Contract: G10PC00026 Task Order Number: G10PD02143 Task Order Number: G10PD01027 LiDAR was collected at a 2.0 meter nominal post spacing (2.0m GSD) for approximately 3,197 square miles of coastal Maine as part of the American Recovery and Reinvestment Act (ARRA) of 2010, while no snow was on the ground and rivers were at or below normal levels. Project meets U.S. Geological Survey National Geospatial Program Base LiDAR Specification, Version 12. mike.sutherland@noaa.gov 2013-05-15T16:00:00.00-07:00 gov.noaa.csc.maps:me2010_usgs_coastal_m2477 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/ct2011_fema_quinnipiacriver_m1472.xml&view=xml2text/xml-to-text-ISO&altview=none The Quinnipiac AOI consists of one 443 square mile area. Ground Control is collected throughout the AOI for use in the processing of LiDAR data to ensure data accurately represents the ground surface. QA/QC checkpoints, (FVA and CVA - see Ground Control process step for further information) also collected throughout the AOI, are used for independent quality checks of the processed LiDAR data. LiDAR acquisition products include Pre- and Post- flight reports which contain information on the flightlines, equipment parameters, and other pertinant acquisition details. The LiDAR product is considered to be point cloud data and consists of 1500mx1500m tiles of LAS points which are partially classified such that the bare earth points can be calibrated to the ground surface and tested via the independent QC to ensure the ground surface is accurately represented. The average point spacing of the data set is 0.5m. mike.sutherland@noaa.gov 2013-05-15T16:00:00.00-07:00 gov.noaa.csc.maps:ct2011_fema_quinnipiacriver_m1472 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/ct2004_fema_connecticutriver_m1473.xml&view=xml2text/xml-to-text-ISO&altview=none LiDAR data is remotely sensed high-resolution elevation data collected by an airborne collection platform. The LiDAR files were converted from .PTS format to LAS V1.2. All data is Bare Earth, with 99% of all buildings removed and 95% of all vegetation removed. There is no information available for return number, scan angle, GPS time, or intensity. This data set covers approximately 1,233.83 square miles (3,195.6 sq km) of the Connecticut River. mike.sutherland@noaa.gov 2013-05-15T16:00:00.00-07:00 gov.noaa.csc.maps:ct2004_fema_connecticutriver_m1473 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Geology/iso/xml/G00028.xml&view=xml2text/xml-to-text-ISO&altview=none The Index to Marine and Lacustrine Geological Samples (IMLGS) contains inventory and basic lithology, texture, and age information for geologic samples of sediment and rock from the seafloor and lakebeds archived by approximately twenty oceanographic institutions and government agencies, in the U.S., Canada, the United Kingdom, and Germany. Most samples are available for further study, on request from the individual repository. Listings from the file include institutional contact information. Data are coded at the curatorial facility and include ship, cruise, sample id, latitude/longitude, water depth, date of sample collection, sampling device, storage method, core diameter/length and interval within core (if applicable). Sample descriptions, including primary and secondary lithology and texture or rock type and mineralogy, other noted components, remarks and weathering notes, age, province, principal investigator, and descriptive comments are included for some samples, all samples include basic collection information. The IMLGS includes over 500,000 data records containing information for over 197,000 discrete sea floor and lakebed cores, grabs, dredges, and drill holes worldwide, as of May 2013. The IMLGS is searchable by any parameter or combination of parameters. The database was designed by representatives of the curatorial facilities in cooperation with NGDC through a series of meetings sponsored by the National Science Foundation (NSF), beginning in 1977, and NSF continues to support coding of data into the Index. The Index is accessible via a Web Feature Service (WFS), a Web Map Service (WMS), a www-forms interface, and a geospatially-enabled ArcGIS interactive map interface. Carla.J.Moore@noaa.gov 2013-05-14T16:00:00.00-07:00 gov.noaa.ngdc.mgg.geology:G00028 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/1998_WinterEC_m38.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:1998_WinterEC_m38 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/1998_SpringWC_m4.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:1998_SpringWC_m4 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/1999_FallEC_m8.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:1999_FallEC_m8 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/1997_FallWC_m3.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:1997_FallWC_m3 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/1997_CA_Sacramento_m59.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:1997_CA_Sacramento_m59 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2000_NY_Cayuga_m106.xml&view=xml2text/xml-to-text-ISO&altview=none These data were collected in April of 2000 for the Cayuga County New York Department of Planning and Economic Development. Elevation points were sampled at densities necessary to support the generation of contours that meet or exceed United States National Map Accuracy Standards applicable to the map scales that County tax maps are published and for the following intervals of contour lines to be depicted: four feet for the entire county, two feet for the City of Auburn and adjacent area and two feet for six floodplain areas. This is a bare earth data set, the points, however, are classified as "Never Classified". There are points returned from water surfaces. Point spacing is approximately 5 m. Also, there are areas in the county where the data have been regularized, i.e. gridded points. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:2000_NY_Cayuga_m106 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/1998_SpringEC_m5.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:1998_SpringEC_m5 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/1999_SC-NC-VA_Post-Dennis_m60.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:1999_SC-NC-VA_Post-Dennis_m60 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/1998_PA_Harrisburg_m58.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:1998_PA_Harrisburg_m58 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/1998_FallGC_m22.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:1998_FallGC_m22 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2000_FallEC_m11.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:2000_FallEC_m11 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/1996_FallEC_m1.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:1996_FallEC_m1 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/1999_SC-NC-VA-Post-Floyd_m61.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:1999_SC-NC-VA-Post-Floyd_m61 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/1999_FallGC_m9.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:1999_FallGC_m9 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/1998_FallEC_m6.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:1998_FallEC_m6 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2000_SummerEC_m10.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:2000_SummerEC_m10 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/1998_NorthEast_m7.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:1998_NorthEast_m7 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/1997_FallEC_m2.xml&view=xml2text/xml-to-text-ISO&altview=none This data set includes data collected from 1996-2000 and covers the states of AL,FL,LA,MS,DE,MD,VA,CT,MA,ME,NH, NJ,NY,RI,NC,SC,GA,CA OR,WA,TX OH,PA. Laser beach mapping uses a pulsed laser ranging system mounted onboard an aircraft to measure ground elevation and coastal topography. The laser emits laser beams at high frequency and is directed downward at the earth's surface through a port opening in the bottom of the aircraft's fuselage. The laser system records the time difference between emission of the laser beam and the reception of the reflected laser signal in the aircraft. The aircraft travels over the beach at approximately 60 meters per second while surveying from the low water line to the landward base of the sand dunes. mike.sutherland@noaa.gov 2013-05-07T16:00:00.00-07:00 gov.noaa.csc.maps:1997_FallEC_m2 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/STP/Ionosonde/iso/xml//3088.xml&view=xml2text/xml-to-text-ISO&altview=none Ionograms are recorded tracings of reflected high frequency radio pulses generated by an ionosonde. Unique relationships exist between the sounding frequency and the ionization densities which can reflect it. As the sounder sweeps from lower to higher frequencies, the signal rises above the noise of commercial radio sources and records the return signal reflected from the different layers of the ionosphere. Justin.Mabie@noaa.gov 2013-04-29T16:00:00.00-07:00 gov.noaa.ngdc.stp.ionosonde:3088 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/wa2002_pslc_island_jefferson_m1453.xml&view=xml2text/xml-to-text-ISO&altview=none TerraPoint surveyed and created this data for the Puget Sound LiDAR Consortium under contract. The area surveyed is approximately 525 square miles and covers all of Island County, WA and the Northeast portion of Jefferson County, WA. All data was collected during ideal conditions (leaf-off). The LAS files were derived from all returns ASCII files contain the X,Y,Z values of all the LiDAR returns collected during the survey mission. The GPS time, scan angle and return numbers of each point were preserved in the conversion from ASCII to LAS. The LAS files were classified into the following ASPRS classes: (1) Unclassified (2) Bare Earth. Ground and water points are included in Class 2 (Bare Earth). Futher details are available in the Process Steps below. No ancillary data, such as intensity, is available for this data. Initially this dataset was flown in 2001 with a 30% overlap between flight lines which did not meet specifications. The dataset was reflown in 2002 with a 50% overlap between flight lines as the rest of the PSLC data. The data is broken down into USGS quarter quads and then into 25 tiles within each quarter quad. Due to the overlap the nominal point spacing of the dataset is 1.0 meter. mike.sutherland@noaa.gov 2013-04-25T16:00:00.00-07:00 gov.noaa.csc.maps:wa2002_pslc_island_jefferson_m1453 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/ct2006_fema_coastal_m1468.xml&view=xml2text/xml-to-text-ISO&altview=none LIDAR data is remotely sensed high-resolution elevation data collected by an airborne collection platform. By positioning laser range finding with the use of 1 second GPS with 100hz inertial measurement unit corrections; Terrapoint's LIDAR instruments are able to make highly detailed geospatial elevation products of the ground, man-made structures and vegetation. The LiDAR flightlines for this project was planned for a 50% acquisition overlap. The nominal resolution of this project without overlap is 1.25m. Four returns were recorded for each pulse in addition to an intensity value. GPS Week Time, Intensity, Flightline and number attributes were provided for each LiDAR point. Data is provided as random points, in LAS v1.0 format, classified according to ASPRS Class Code 2=Ground 1=Undefined. Water is included in the bare earth ground model, except where the entire tile is covered by water. The following regions of Connecticut are included in this project: Fairfield County - 130 square kilometers New Haven - 170 square kilometers Middlesex - 29 square kilometers New London - 157 square kilometers Please note that the LiDAR intensity is not calibrated or normalized. The intensity value is meant to provide relative signal return strengths for features imaged by the sensor. mike.sutherland@noaa.gov 2013-04-25T16:00:00.00-07:00 gov.noaa.csc.maps:ct2006_fema_coastal_m1468 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/ak2007_aerometric_valdez_m1466.xml&view=xml2text/xml-to-text-ISO&altview=none This project was completed by Aerometric, Inc. under USGS Contract No. 07CRCN0002, Task Order No. 070020009. This delivery contains point cloud data in LAS 1.1 format, classified in the following manner. Class 1: Unclassified, Class 2: Ground, Class 7: Low Point (Noise), Class 9: Water, Class 10: High Point (Noise), Class 12: Overlap, and Class 17: Port The following are the collection parameters and equipment used to create these data sets. Aircraft: Cessna 320 (N3443Q) and Piper Navajo (N6GR) Lidar System: Optech ALTM Gemini (03SEN145) Approximate Collection Altitude (Above Mean Terrain): 1800 meters Ground Speed: 145 kts Pulse Rate Frequency: 70 kHz Mirror Scan Frequency: 62.6 Hz Scan Angle (+/-): 5.3 degrees Beam Divergence: Narrow (0.25 mrad) Accuracy statements are based on areas of moderate terrain, with points classified as ground. Diminished accuracies are to be expected in areas of extreme terrain and dense vegetation. The accuracy of each point is expected to meet the vertical accuracy standard. Derived products may be less accurate in areas of extreme terrain and dense vegetation due to a lesser number of points defining the ground in these areas. Classified data sets such as this one may have varying posting due to some pulses not reaching the ground. mike.sutherland@noaa.gov 2013-04-25T16:00:00.00-07:00 gov.noaa.csc.maps:ak2007_aerometric_valdez_m1466 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/ak2009_aerometric_yukonflats_m1467.xml&view=xml2text/xml-to-text-ISO&altview=none This delivery contains point cloud data in LAS 1.2 format, classified in the following manner. Class 1: Unclassified and Class 2: Ground. Overlap points have been flagged as withheld. The timestamps are in absolute GPS time minus 1 billion, in accordance with the LAS 1.2 documentation. The following are the collection parameters and equipment used to create this data set. Aircraft: Piper Navajo (N6GR) Lidar System: Optech ALTM Gemini (03SEN145) Approximate Collection Altitude (Above Mean Terrain): 3800 meters Ground Speed: 160 kts Pulse Rate Frequency: 33 kHz Mirror Scan Frequency: 18 Hz Scan Angle (+/-): 16 degrees Beam Divergence: Narrow (0.25 mrad) Scan Cutoff: 0.02 degrees Accuracy statements are based on areas of moderate terrain, with points classified as ground. Diminished accuracies are to be expected in areas of extreme terrain and dense vegetation. The accuracy of each point is expected to meet the vertical accuracy standard, derived products may be less accurate in areas of extreme terrain and dense vegetation due to a lesser number of points defining the ground in these areas. Classified data sets such as this one may have varying posting due to some pulses not reaching the ground. mike.sutherland@noaa.gov 2013-04-25T16:00:00.00-07:00 gov.noaa.csc.maps:ak2009_aerometric_yukonflats_m1467 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2010_OR_DOGAMI_Crater_Lake_m1428.xml&view=xml2text/xml-to-text-ISO&altview=none The Oregon Department of Geology and Mineral Industries (DOGAMI) contracted with Watershed Sciences, Inc. to collect high resolution topographic LiDAR data for multiple areas within the State of Oregon. The areas for LiDAR collection have been designed as part of a collaborative effort of state, federal, and local agencies in order to meet a wide range of project goals. This LiDAR data set was collected August 23, 24, 31, Sept 2 - 5, 2010 and falls mainly in Klamath County, and very small portions of Douglas and Jackson counties in Oregon. This data set consists of bare earth and unclassified points. The average pulse density is 8.39 pulses per square meter over terrestrial surfaces. The area of interest (AOI) totals 283 square miles (181,081 acres) and the total area flown (TAF) covers 308 square miles (197,011 acres). The TAF acreage is greater than the original AOI acreage due to buffering and flight planning optimization. In some areas of heavy vegetation or forest cover, there may be relatively few ground points in the LiDAR data. Elevation values for open water surfaces are not valid elevation values because few LiDAR points are returned from water surfaces. LiDAR intensity values were also collected. mike.sutherland@noaa.gov 2013-04-25T16:00:00.00-07:00 gov.noaa.csc.maps:2010_OR_DOGAMI_Crater_Lake_m1428 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2006_northpugetsound_m1451.xml&view=xml2text/xml-to-text-ISO&altview=none USGS Contract Number: 01CRCN0014 In Spring, 2006 Sanborn was contracted by the USGS to survey aprocimately 1,735 square miles of western Whatcom and Skagit Counties in Washington state. All data was collected during ideal conditions (rivers at or below mean level, leaf off, etc.). For this collect two sensors were used: The Leica ALS-50 (High Relief Collection) and Optech 2050 (High and Low Relief Collection). LiDAR calibrations were performed to determine and therefore eliminate systematic biases that occur between the the two sensors. Once the biases were determined they were modeled out. The Leica ALS-50 produced an average point spacing of 1.4 meters. The Optech 2050 produced an average point spacing of 1.3 meters. All points are classified as Class 2 (Ground) which includes water points and any possibly remaining artifacts. Leica ALS-50 LiDAR Acquisition Paramters: Avg. Altitude: 1,500 meters AGL Airspeed: ~120 Knots Scan Freq: 36 Hertz Scan Width Half Angle: 36 Degrees Pulse Rate: 60,000 Hertz Overlap: 44-60% Optech 2050 LiDAR Acquisition Parameters: Avg. Altitude: 1,200 meters AGL Airspeed: ~120 Knots Scan Freq: 30 Hertz Scan Width Half Angle: 40 Degrees Pulse Rate: 50,000 Hertz Overlap: 30-50% mike.sutherland@noaa.gov 2013-04-25T16:00:00.00-07:00 gov.noaa.csc.maps:2006_northpugetsound_m1451 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/wa2003_pslc_lewis_m1461.xml&view=xml2text/xml-to-text-ISO&altview=none TerraPoint surveyed and created this data for the Puget Sound LiDAR Consortium under contract. The area surveyed is approximately 100 square miles and covers part of Lewis County, WA. All data was collected during ideal conditions (leaf-off). The LAS files were derived from all returns ASCII files contain the X,Y,Z values of all the LiDAR returns collected during the survey mission. The GPS time, classification, scan angle, intensity and return numbers of each point were preserved in the conversion from ASCII to LAS. The LAS files are classified into the following ASPRS classes: (1) Unclassified (2) Bare Earth. Ground and water points are included in Class 2 (Bare Earth). Futher details are available in the Process Steps below. The NOAA Coastal Services Center noticed that some intensity values are 0, so be aware before using the intensity information. This dataset was flown in 2003 with a 50% overlap between flight lines. Due to the overlap the nominal point spacing of the dataset is 1.0 meter. mike.sutherland@noaa.gov 2013-04-25T16:00:00.00-07:00 gov.noaa.csc.maps:wa2003_pslc_lewis_m1461 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/wa2003_pslc_snohomish_m1462.xml&view=xml2text/xml-to-text-ISO&altview=none TerraPoint surveyed and created this data for the Puget Sound LiDAR Consortium under contract. The area surveyed is approximately 167 square miles and covers a northwest portion of Snohomish County, WA. All data was collected during ideal conditions (leaf-off). The LAS files were derived from all returns ASCII files contain the X,Y,Z values of all the LiDAR returns collected during the survey mission. The GPS time, classification, scan angle, intensity and return numbers of each point were preserved in the conversion from ASCII to LAS. The LAS files are classified into the following ASPRS classes: (1) Unclassified (2) Bare Earth. Ground and water points are included in Class 2 (Bare Earth). Futher details are available in the Process Steps below. The NOAA Coastal Services Center noticed that some intensity values are 0, so be aware before using the intensity information. This dataset was flown in 2003 with a 50% overlap between flight lines. Due to the overlap the nominal point spacing of the dataset is 1.0 meter. mike.sutherland@noaa.gov 2013-04-25T16:00:00.00-07:00 gov.noaa.csc.maps:wa2003_pslc_snohomish_m1462 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2011_OR_DOGAMI_Ochoco_m1412.xml&view=xml2text/xml-to-text-ISO&altview=none The Oregon Department of Geology and Mineral Industries (DOGAMI) contracted with Watershed Sciences, Inc. to collect high resolution topographic LiDAR data for multiple areas within the State of Oregon. The areas for LiDAR collection have been designed as part of a collaborative effort of state, federal, and local agencies in order to meet a wide range of project goals. This LiDAR data set was collected from July 8 - 16, 2011 and encompasses portions of Wheeler, Crook, and Grant counties in Oregon. This data set consists of bare earth and unclassified points. The average pulse density is 9.74 pulses per square meter over terrestrial surfaces. The area of interest (AOI) encompasses 192,576 acres and the total area flown (TAF) covers 196,450 acres. The TAF acreage is greater than the original AOI acreage due to buffering and flight planning optimization. In some areas of heavy vegetation or forest cover, there may be relatively few ground points in the LiDAR data. Elevation values for open water surfaces are not valid elevation values because few LiDAR points are returned from water surfaces. LiDAR intensity values were also collected. mike.sutherland@noaa.gov 2013-04-25T16:00:00.00-07:00 gov.noaa.csc.maps:2011_OR_DOGAMI_Ochoco_m1412 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/usgs2010_AtchafalayaBasinLouisiana_m1433.xml&view=xml2text/xml-to-text-ISO&altview=none The Light Detection and Ranging (LiDAR) dataset is a survey of the Atchafalaya Basin in south-central Louisiana. The entire survey area encompasses 981 square miles. The LiDAR point cloud was flown at a nominal post spacing of 1.0 meters for unobscured areas. The LiDAR data is in compliance with the U.S. Geological Survey National Geospatial Program Guidelines and Base Specifications, Version 13-ILMF 2010. The Flightlines were acquired by Northrop Grumman, 3001 Operating Unit, which required 10 subsequent missions between December 2, 2010, and December 7, 2010. Northrop Grumman classified the data into the following ASPRS compliant classes: Class 1: Processed, but unclassified Class 2: Bare Earth Ground Class 3: Low Vegetation Class 4: Medium Vegetation (also used for manual classification of vegetation returns) Class 5: High Vegetation Class 6: Buildings and man-made structures Class 7: Noise (low or high, manually identified) Class 9: Water Class 10: Ignored Ground (Breakline Proximity) Class 13: Withheld (outliers, blunders, etc.) mike.sutherland@noaa.gov 2013-04-25T16:00:00.00-07:00 gov.noaa.csc.maps:usgs2010_AtchafalayaBasinLouisiana_m1433 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/wa2003_pslc_yakima_m1463.xml&view=xml2text/xml-to-text-ISO&altview=none TerraPoint surveyed and created this data for the Puget Sound LiDAR Consortium under contract. The area surveyed is approximately 77 square miles and covers a portion of Yakima County, WA. All data was collected during ideal conditions (leaf-off). The LAS files were derived from all returns ASCII files contain the X,Y,Z values of all the LiDAR returns collected during the survey mission. The GPS time, scan angle, intensity classification and return numbers of each point were preserved in the conversion from ASCII to LAS. ASPRS Classifications were used: Class 1 (Unclassified) and Class 2 (Ground). Futher details are available in the Process Steps below. The NOAA Coastal Services Center noticed that some intensity values are 0, so be aware before using the intensity information. This dataset was flown in 2003 with a 50% overlap between flight lines. Due to the overlap the nominal point spacing of the dataset is 1.0 meter. mike.sutherland@noaa.gov 2013-04-25T16:00:00.00-07:00 gov.noaa.csc.maps:wa2003_pslc_yakima_m1463 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2007_lakecounty_florida_m1431.xml&view=xml2text/xml-to-text-ISO&altview=none This metadata document describes the LiDAR point data in LAS format produced by Kucera covering the project area of Lake County, FL. The data produced is satisfactory for the generation of both 1' and 2' contours. The average point spacing for all tiles is estimated to be 1 meter. mike.sutherland@noaa.gov 2013-04-25T16:00:00.00-07:00 gov.noaa.csc.maps:2007_lakecounty_florida_m1431 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/STP/Ionosonde/iso/xml//3091.xml&view=xml2text/xml-to-text-ISO&altview=none All the data contributed come from 1957 through 1990. They have been digitized, reformatted, converted to universal time (the software also can display the data in local meridian time), and passed through quality control filters. Justin.Mabie@noaa.gov 2013-04-24T16:00:00.00-07:00 gov.noaa.ngdc.stp.ionosonde:3091 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/STP/Ionosonde/iso/xml//3090.xml&view=xml2text/xml-to-text-ISO&altview=none Ionospheric Parameters such as FoF2, FoF1, FoE derrived from hand scaling of analog Ionograms Justin.Mabie@noaa.gov 2013-04-24T16:00:00.00-07:00 gov.noaa.ngdc.stp.ionosonde:3090 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/STP/Ionosonde/iso/xml//3089.xml&view=xml2text/xml-to-text-ISO&altview=none Ionograms are recorded tracings of reflected high frequency radio pulses generated by an ionosonde. Unique relationships exist between the sounding frequency and the ionization densities which can reflect it. As the sounder sweeps from lower to higher frequencies, the signal rises above the noise of commercial radio sources and records the return signal reflected from the different layers of the ionosphere. Justin.Mabie@noaa.gov 2013-04-24T16:00:00.00-07:00 gov.noaa.ngdc.stp.ionosonde:3089 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/STP/Ionosonde/iso/xml//G00556.xml&view=xml2text/xml-to-text-ISO&altview=none These ionospheric data consist of scaling notes, equipment usage logs, and ionospheric values in the form of daily work sheets, F-Plots, tabulations, and booklets. The station notes list the equipment used, power settings, frequencies used, equipment problems, and other information about the equipment. The daily work sheets, commonly referred to an 7E's, are the paper forms used for recording the scaled values values of the ionospheric parameters. Tabulations and booklets contain the published values by ionospheric parameter. If publication errors arise or are suspected, the daily work sheets are usually consulted, if they are available.These data are available from the National Geophysical Data Center (NGDC) as electrostatic copies and some as imaged files. Most of the data are in the form of daily work sheets, tabulations, and booklets. The booklets and tabulations have each ionospheric parameter listed on one or two pages, depending upon the format. The daily work sheets have one day (24 hours) of scaled ionospheric parameters on each sheet. Justin.Mabie@noaa.gov 2013-04-18T16:00:00.00-07:00 gov.noaa.ngdc.stp.ionosonde:G00556 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2011_OR_DOGAMI_Newberry_FS_m1454.xml&view=xml2text/xml-to-text-ISO&altview=none The Oregon Department of Geology and Mineral Industries (DOGAMI) contracted with Watershed Sciences, Inc. to collect high resolution topographic LiDAR data for multiple areas within the State of Oregon. The areas for LiDAR collection have been designed as part of a collaborative effort of state, federal, and local agencies in order to meet a wide range of project goals. This LiDAR data set was collected July 31 - August 10, 2011 and encompasses portions of Deschutes, Klamath, and Lake counties in Oregon. This data set consists of bare earth and unclassified points. The average pulse density is 10.2 pulses per square meter over terrestrial surfaces. The area of interest (AOI) totals 444 square miles (284,030 acres) and the total area flown (TAF) covers 462 square miles (296,074 acres). The TAF acreage is greater than the original AOI acreage due to buffering and flight planning optimization. This metadata record reflects all the data and cumulative statistics for the overall lidar survey. In some areas of heavy vegetation or forest cover, there may be relatively few ground points in the LiDAR data. Elevation values for open water surfaces are not valid elevation values because few LiDAR points are returned from water surfaces. LiDAR intensity values were also collected. FS (US Forest Service) mike.sutherland@noaa.gov 2013-04-03T16:00:00.00-07:00 gov.noaa.csc.maps:2011_OR_DOGAMI_Newberry_FS_m1454 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2010_OR_DOGAMI_Newberry_m1452.xml&view=xml2text/xml-to-text-ISO&altview=none The Oregon Department of Geology and Mineral Industries (DOGAMI) contracted with Watershed Sciences, Inc. to collect high resolution topographic LiDAR data for multiple areas within the State of Oregon. The areas for LiDAR collection have been designed as part of a collaborative effort of state, federal, and local agencies in order to meet a wide range of project goals. This LiDAR data set was collected over three deliveries from May 28 - July 27, 2010 and encompasses portions of Deschutes, Klamath, and Lake counties in Oregon. This data set consists of bare earth and unclassified points. The average pulse density is 8.51 pulses per square meter over terrestrial surfaces. The area of interest (AOI) totals 500 square miles (320,041 acres) and the total area flown (TAF) covers 506 square miles (324,020 acres). The TAF acreage is greater than the original AOI acreage due to buffering and flight planning optimization. This metadata record reflects all the data and cumulative statistics for the overall lidar survey. In some areas of heavy vegetation or forest cover, there may be relatively few ground points in the LiDAR data. Elevation values for open water surfaces are not valid elevation values because few LiDAR points are returned from water surfaces. LiDAR intensity values were also collected. Dates of acquisition for the six deliveries that make up this data set. Delivery Area Acquisition Dates AOI Acres TAF Acres 1 May 28 - June 1, 2010 31,380 32,225 2 May 28 - July 27, 2010 159,215 160,744 3 May 28 - July 27, 2010 129,446 131,051 mike.sutherland@noaa.gov 2013-04-03T16:00:00.00-07:00 gov.noaa.csc.maps:2010_OR_DOGAMI_Newberry_m1452 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2001_NC_Phase1B_m1399.xml&view=xml2text/xml-to-text-ISO&altview=none This airborne LiDAR terrain mapping data was acquired in the spring of 2001. The data were collected for the floodplain mapping program for the state of North Carolina. The data were collected for the state in three phases: 1, 2, and 3. This metadata record describes that data that were in phase 1 of collection and fall within the Cape Fear and Lumber River Basins in central and eastern North Carolina. This area consists of 30 counties which are listed below in the Place Keywords field. The data were received by the NOAA Coastal Services Center from the U.S. Geological Survey (USGS) Center for Lidar Coordination and Knowledge (CLICK). For data storage and Digital Coast provisioning purposes, the CSC converted the data to geographic coordinates and ellipsoid (Geoid99) elevations. The data are unclassified. mike.sutherland@noaa.gov 2013-04-03T16:00:00.00-07:00 gov.noaa.csc.maps:2001_NC_Phase1B_m1399 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2010_CA_DOGAMI_Shasta_m1413.xml&view=xml2text/xml-to-text-ISO&altview=none The Oregon Department of Geology and Mineral Industries (DOGAMI) contracted with Watershed Sciences, Inc. to collect high resolution topographic LiDAR data for multiple areas within the State of Oregon. The areas for LiDAR collection have been designed as part of a collaborative effort of state, federal, and local agencies in order to meet a wide range of project goals. This LiDAR data set was collected from July 5 through September 2, 2010 and encompasses the area around Mt. Shasta in portions of Siskiyou and Shasta counties in California. This data set consists of bare earth and unclassified points. The average pulse density is 10.18 pulses per square meter over terrestrial surfaces. The area of interest (AOI) totals 465 square miles (297,368 acres) and the total area flown (TAF) covers 471 square miles (301,454 acres). The TAF acreage is greater than the original AOI acreage due to buffering and flight planning optimization. This metadata record reflects all the data and cumulative statistics for the overall lidar survey. In some areas of heavy vegetation or forest cover, there may be relatively few ground points in the LiDAR data. Elevation values for open water surfaces are not valid elevation values because few LiDAR points are returned from water surfaces. LiDAR intensity values were also collected. mike.sutherland@noaa.gov 2013-04-03T16:00:00.00-07:00 gov.noaa.csc.maps:2010_CA_DOGAMI_Shasta_m1413 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2009_WA_DOGAMI_Southwestern_Washington_m1418.xml&view=xml2text/xml-to-text-ISO&altview=none The Oregon Department of Geology and Mineral Industries (DOGAMI) contracted with Watershed Sciences, Inc. to collect high resolution topographic LiDAR data for multiple areas within the State of Oregon. The areas for LiDAR collection have been designed as part of a collaborative effort of state, federal, and local agencies in order to meet a wide range of project goals. This LiDAR data set was collected between July 26 - October 10, 2009 (in four separate dates of acquisition) and encompasses the coastal areas of Grays Harbor and Pacific counties in Oregon. This data set consists of bare earth and unclassified points. The average pulse density is 8.91 pulses per square meter over terrestrial surfaces. The area of interest (AOI) encompasses approximately 463 square miles (296,307 acres) and the total area flown (TAF) covers 492 square miles (315,012 acres). The TAF acreage is greater than the original AOI acreage due to buffering and flight planning optimization. In some areas of heavy vegetation or forest cover, there may be relatively few ground points in the LiDAR data. Elevation values for open water surfaces are not valid elevation values because few LiDAR points are returned from water surfaces. LiDAR intensity values were also collected. The dates of acquisition for this data set are: July 26 - August 1, 2009 September 20 - 26, 2009 September 27 - October 3, 2009 October 4 - 10, 2009 mike.sutherland@noaa.gov 2013-04-03T16:00:00.00-07:00 gov.noaa.csc.maps:2009_WA_DOGAMI_Southwestern_Washington_m1418 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2010_OR_DOGAMI_Eagle_Point_m1409.xml&view=xml2text/xml-to-text-ISO&altview=none The Oregon Department of Geology and Mineral Industries (DOGAMI) contracted with Watershed Sciences, Inc. to collect high resolution topographic LiDAR data for multiple areas within the State of Oregon. The areas for LiDAR collection have been designed as part of a collaborative effort of state, federal, and local agencies in order to meet a wide range of project goals. This LiDAR data set was collected from October 29 through November 4, 2010 and encompasses areas including and surrounding Eagle Point, Oregon and along the Rogue River in Jackson County. This data set consists of bare earth and unclassified points. The average pulse density is 8.08 pulses per square meter over terrestrial surfaces. The area of interest (AOI) totals 203 square miles (129,628 acres) and the total area flown (TAF) covers 211 square miles (134,899 acres). The TAF acreage is greater than the original AOI acreage due to buffering and flight planning optimization. This metadata record reflects all the data and cumulative statistics for the overall lidar survey. In some areas of heavy vegetation or forest cover, there may be relatively few ground points in the LiDAR data. Elevation values for open water surfaces are not valid elevation values because few LiDAR points are returned from water surfaces. LiDAR intensity values were also collected. mike.sutherland@noaa.gov 2013-03-28T16:00:00.00-07:00 gov.noaa.csc.maps:2010_OR_DOGAMI_Eagle_Point_m1409 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2011_OR_DOGAMI_Pine_Creek_m1415.xml&view=xml2text/xml-to-text-ISO&altview=none The Oregon Department of Geology & Mineral Industries (DOGAMI) contracted with Watershed Sciences, Inc. to collect high resolution topographic LiDAR data for multiple areas within the State of Oregon. The areas for LiDAR collection have been designed as part of a collaborative effort of state, federal, and local agencies in order to meet a wide range of project goals. This LiDAR data set was collected from May 19 - 20, 2011 and encompasses portions of Jefferson, Wasco, and Wheeler counties in Oregon. This data set consists of bare earth and unclassified points. The average pulse density is 8.89 pulses per square meter over terrestrial surfaces. The area of interest (AOI) encompasses 160 square miles (102,447 acres) and the total area flown (TAF) covers 163 square miles (104,631 acres). The TAF acreage is greater than the original AOI acreage due to buffering and flight planning optimization. In some areas of heavy vegetation or forest cover, there may be relatively few ground points in the LiDAR data. Elevation values for open water surfaces are not valid elevation values because few LiDAR points are returned from water surfaces. LiDAR intensity values were also collected. mike.sutherland@noaa.gov 2013-03-28T16:00:00.00-07:00 gov.noaa.csc.maps:2011_OR_DOGAMI_Pine_Creek_m1415 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/1999_USACE_HI_Bathy_m1457.xml&view=xml2text/xml-to-text-ISO&altview=none These data were collected by the SHOALS (Scanning Hydrographic Operational Airborne Lidar Survey) system which consists of an airborne laser transmitter/receiver capable of measuring 400 soundings per second. The system operates from a deHavilland DHC-6 Twin Otter flying at altitudes between 200 and 400 meters with a ground speed of about 100 knots. The SHOALS system also includes a ground-based data processing system for calculating acurate horizontal position and water depth. Lidar is an acronym for LIght Detection And Ranging. The system operates by emitting a pulse of light that travels from an airborne platform to the water surface where a small portion of the laser energy is backscattered to the airborne receiver. The remaining energy at the water's surface propogates through the water column and reflects off the sea bottom and back to the airborne detector. The time difference between the surface return and the bottom return corresponds to water depth. The maximum depth the system is able to sense is related to the complex interaction of radiance of bottom material, incident sun angle and intensity, and the type and quantity of organics or sediments in the water column. As a rule-of-thumb, the SHOALS system should be capable of sensing bottom to depths equal to two or three times the Secchi depth. mike.sutherland@noaa.gov 2013-03-28T16:00:00.00-07:00 gov.noaa.csc.maps:1999_USACE_HI_Bathy_m1457 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2011_usgs_baldwin_m1425.xml&view=xml2text/xml-to-text-ISO&altview=none USGS Contract: G10PC00026 Task Order Number: G10PD02126 LiDAR was collected at a 2.0 meter nominal post spacing (2.0m GSD) for approximately 329 square miles of Baldwin County, Alabama, while no snow was on the ground and rivers were at or below normal levels. Project was divided into two separate AOIs, Baldwin West and Baldwin East. Project meets U.S. Geological Survey National Geospatial Program Base LiDAR Specification, Version 13. LAS Classifications: Class 1: Unclassified Class 2: Bare Earth Ground Class 5: High Vegetation Class 7: Noise (Low points) Class 9: Water Class 10: Ignored Ground (within 1m of breakline) Class 12: Overlap Class 13: Witheld mike.sutherland@noaa.gov 2013-03-28T16:00:00.00-07:00 gov.noaa.csc.maps:2011_usgs_baldwin_m1425 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2010_OR_DOGAMI_Klamath_m1410.xml&view=xml2text/xml-to-text-ISO&altview=none The Oregon Department of Geology & Mineral Industries (DOGAMI) contracted with Watershed Sciences, Inc. to collect high resolution topographic LiDAR data for multiple areas within the State of Oregon. The areas for LiDAR collection have been designed as part of a collaborative effort of state, federal, and local agencies in order to meet a wide range of project goals. This LiDAR data set was collected over six deliveries from September 14 through October 27, 2010 and encompasses portions of Klamath and Lake counties in Oregon. This data set consists of bare earth and unclassified points. The average pulse density is 8.61 pulses per square meter over terrestrial surfaces. The area of interest (AOI) totals 1054 square miles (674,756 acres) and the total area flown (TAF) covers 1083 square miles (692,999 acres). The TAF acreage is greater than the original AOI acreage due to buffering and flight planning optimization. This metadata record reflects all the data and cumulative statistics for the overall lidar survey. In some areas of heavy vegetation or forest cover, there may be relatively few ground points in the LiDAR data. Elevation values for open water surfaces are not valid elevation values because few LiDAR points are returned from water surfaces. LiDAR intensity values were also collected. Dates of acquisition for the six deliveries that make up this data set. Delivery Area Acquisition Dates AOI Acres TAF Acres 1 Sept 14 - 22, 2010 104,196 106,995 2 Sept 20 - Oct 18, 2010 67,937 71,599 3 Sept 14 - Oct 16, 2010 127,789 131,580 4 Oct 6 - 27, 2010 155,387 157,875 5 Sept 23 - Oct 18, 2010 92,762 95,612 6 Sept 27 - Oct 16, 2010 126,685 129,338 mike.sutherland@noaa.gov 2013-03-28T16:00:00.00-07:00 gov.noaa.csc.maps:2010_OR_DOGAMI_Klamath_m1410 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/usgs2010_MobileBay_AL_m1426.xml&view=xml2text/xml-to-text-ISO&altview=none USGS Contract: G10PC00026 Task Order Number: G10PD00578 LiDAR was collected at a nominal pulse spacing of 2.0 meters for a 700 square mile area to the east of Mobile Bay, either not previously surveyed using LiDAR sensors or where the collected data was poor, while no snow was on the ground and rivers were at or below normal levels. The goal of the NGOM LiDAR project in the post-Katrina environment is to provide scientific knowledge and tools required to make optimal decisions about land resource use, management practices, and future development in the northern Gulf of Mexico coastal zone. This regional LiDAR elevation mapping data will be used for modeling, predicting landscape change, promoting restoration of ecosystems, and mitigating risks associated with anthropomorphic and natural hazards. mike.sutherland@noaa.gov 2013-03-28T16:00:00.00-07:00 gov.noaa.csc.maps:usgs2010_MobileBay_AL_m1426 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2009_USGS_Umpqua_River_m1429.xml&view=xml2text/xml-to-text-ISO&altview=none Watershed Sciences, Inc. collected Light Detection and Ranging (LiDAR) data for the U.S. Geological Survey (USGS) Umpqua River study site in collaboration with the Puget Sound LiDAR Consortium (PSLC). The areas for LiDAR collection have been designed as part of a collaborative effort of state, federal, and local agencies in order to meet a wide range of project goals. This LiDAR data set was collected between April 21 - July 13, 2009 and falls in Douglas County, Oregon. This data set consists of bare earth and unclassified points. The average pulse density is 8.80 pulses per square meter over terrestrial surfaces. The area of interest (AOI) encompasses approximately 67,408 acres and the total area flown (TAF) covers 69,925 acres. The TAF acreage is greater than the original AOI acreage due to buffering and flight planning optimization. In some areas of heavy vegetation or forest cover, there may be relatively few ground points in the LiDAR data. Elevation values for open water surfaces are not valid elevation values because few lidar points are returned from water surfaces. Lidar intensity values were also collected. mike.sutherland@noaa.gov 2013-03-28T16:00:00.00-07:00 gov.noaa.csc.maps:2009_USGS_Umpqua_River_m1429 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/ca2006_usgs_alameda_m1474.xml&view=xml2text/xml-to-text-ISO&altview=none The Light Detection and Ranging (LiDAR) data set is a survey of Alameda County in Northern California. The entire survey covers approximately 868.382 square miles. The Nominal Point Density of this dataset is approximately 1.66 meters for unobscured areas. The LiDAR discrete-return point cloud data were originally available in the American Society for Photogrammetry and Remote Sensing (ASPRS) LAS V1.2 format. mike.sutherland@noaa.gov 2013-03-28T16:00:00.00-07:00 gov.noaa.csc.maps:ca2006_usgs_alameda_m1474 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2001_USACE_HI_Bathy_m1465.xml&view=xml2text/xml-to-text-ISO&altview=none These data were collected by the SHOALS (Scanning Hydrographic Operational Airborne Lidar Survey) system which consists of an airborne laser transmitter/receiver capable of measuring 400 soundings per second. The system operates from a deHavilland DHC-6 Twin Otter flying at altitudes between 200 and 400 meters with a ground speed of about 100 knots. The SHOALS system also includes a ground-based data processing system for calculating acurate horizontal position and water depth. Lidar is an acronym for LIght Detection And Ranging. The system operates by emitting a pulse of light that travels from an airborne platform to the water surface where a small portion of the laser energy is backscattered to the airborne receiver. The remaining energy at the water's surface propogates through the water column and reflects off the sea bottom and back to the airborne detector. The time difference between the surface return and the bottom return corresponds to water depth. The maximum depth the system is able to sense is related to the complex interaction of radiance of bottom material, incident sun angle and intensity, and the type and quantity of organics or sediments in the water column. As a rule-of-thumb, the SHOALS system should be capable of sensing bottom to depths equal to two or three times the Secchi depth. mike.sutherland@noaa.gov 2013-03-28T16:00:00.00-07:00 gov.noaa.csc.maps:2001_USACE_HI_Bathy_m1465 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/2000_HI_USACE_Bathy_m1458.xml&view=xml2text/xml-to-text-ISO&altview=none These data were collected by the SHOALS (Scanning Hydrographic Operational Airborne Lidar Survey) system which consists of an airborne laser transmitter/receiver capable of measuring 400 soundings per second. The system operates from a deHavilland DHC-6 Twin Otter flying at altitudes between 200 and 400 meters with a ground speed of about 100 knots. The SHOALS system also includes a ground-based data processing system for calculating acurate horizontal position and water depth. Lidar is an acronym for LIght Detection And Ranging. The system operates by emitting a pulse of light that travels from an airborne platform to the water surface where a small portion of the laser energy is backscattered to the airborne receiver. The remaining energy at the water's surface propogates through the water column and reflects off the sea bottom and back to the airborne detector. The time difference between the surface return and the bottom return corresponds to water depth. The maximum depth the system is able to sense is related to the complex interaction of radiance of bottom material, incident sun angle and intensity, and the type and quantity of organics or sediments in the water column. As a rule-of-thumb, the SHOALS system should be capable of sensing bottom to depths equal to two or three times the Secchi depth. mike.sutherland@noaa.gov 2013-03-28T16:00:00.00-07:00 gov.noaa.csc.maps:2000_HI_USACE_Bathy_m1458 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Lidar/iso/xml/wa2009_pslc_sanjuan_m1464.xml&view=xml2text/xml-to-text-ISO&altview=none The dataset encompasses portions of San Juan and Whatcom counties in northwest Washington. The surveyed area is approximately 222 square miles. The LAS V1.1 files are classified into Class 1 (Unclassified) and Class 2 (Bare Earth) water points are included in both classes. The LAS files are all-return and also include intensity measurements. 50% overlap was used between flightines, resulting in each area being surveyed twice. The nominal point spacing of the data is 0.408 meters (6 pt/sq. meter). Watershed Sciences, Inc. collected the LiDAR and created this data set for the Puget Sound LiDAR Consortium mike.sutherland@noaa.gov 2013-03-28T16:00:00.00-07:00 gov.noaa.csc.maps:wa2009_pslc_sanjuan_m1464 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/Sonar_Water_Column/iso/xml/WCD_Collection.xml&view=xml2text/xml-to-text-ISO&altview=none The collection and analysis of water column sonar data is a relatively new avenue of research into the marine environment. Primary uses include assessing biological abundance, species identification,and habitat characterization. It is also useful for evaluating underwater gas seeps, characterizing the seafloor and bathymetry. The NGCD is collection and archiving of this data from a number of sources including the NOAA and academic fleets, and making the data available to researchers and the public around the world. wcd.info@noaa.gov 2013-02-26T16:00:00.00-07:00 gov.noaa.ngdc.mgg.wcd:WCD_Collection http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/463.xml&view=xml2text/xml-to-text-ISO&altview=none The 1-second Nawiliwili Hawaii Elevation Grid provides bathymetric data in ASCII raster format of 1-second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling dem.info@noaa.gov 2013-02-26T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:463 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/465.xml&view=xml2text/xml-to-text-ISO&altview=none The 1-second Oahu Hawaii Elevation Grid provides bathymetric data in ASCII raster format of 1-second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling dem.info@noaa.gov 2013-02-26T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:465 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/526.xml&view=xml2text/xml-to-text-ISO&altview=none The 3-second Yakutat Alaska Elevation Grid provides bathymetric data in ASCII raster format of 3-second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling dem.info@noaa.gov 2013-02-26T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:526 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/523.xml&view=xml2text/xml-to-text-ISO&altview=none The Sitka, Alaska Elevation Grid provides bathymetric data in ASCII raster format of 3 arc-second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling dem.info@noaa.gov 2013-02-26T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:523 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/522.xml&view=xml2text/xml-to-text-ISO&altview=none The Sitka, Alaska Elevation Grid provides bathymetric data in ASCII raster format of 1 arc-second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling dem.info@noaa.gov 2013-02-26T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:522 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/524.xml&view=xml2text/xml-to-text-ISO&altview=none The Sitka, Alaska Elevation Grid provides bathymetric data in ASCII raster format of 9 arc-second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling dem.info@noaa.gov 2013-02-26T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:524 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/517.xml&view=xml2text/xml-to-text-ISO&altview=none The 3-second Homer Alaska Elevation Grid provides bathymetric data in ASCII raster format of 8/3-second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling dem.info@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:517 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/715.xml&view=xml2text/xml-to-text-ISO&altview=none NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) to support individual coastal States as part of the National Tsunami Hazard Mitigation Program's (NTHMP) efforts to improve community preparedness and hazard mitigation. These integrated bathymetric-topographic DEMs are used to support tsunami and coastal inundation mapping. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to various vertical and horizontal datums depending on the specific modeling requirements of each State. For specific datum information on each DEM, refer to the appropriate DEM documentation. Cell sizes also vary depending on the specification required by modelers in each State, but typically range from 8/15 arc-second (~16 meters) to 8 arc-seconds (~240 meters). kelly.carignan@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:715 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/405.xml&view=xml2text/xml-to-text-ISO&altview=none NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to support tsunami forecasting and modeling efforts at the NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory (PMEL). The DEMs are part of the tsunami forecast system SIFT (Short-term Inundation Forecasting for Tsunamis) currently being developed by PMEL for the NOAA Tsunami Warning Centers, and are used in the MOST (Method of Splitting Tsunami) model developed by PMEL to simulate tsunami generation, propagation, and inundation. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical tidal datum of Mean High Water (MHW) and horizontal datum of World Geodetic System 1984 (WGS84). Grid spacings for the DEMs range from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters). kelly.carignan@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:405 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/648.xml&view=xml2text/xml-to-text-ISO&altview=none The 1-second Crescent City, California Elevation Grid provides bathymetric data in ASCII raster format of 1-second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling dem.info@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:648 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/284.xml&view=xml2text/xml-to-text-ISO&altview=none Bathymetry of Lake Huron has been compiled as a component of a NOAA project to rescue Great Lakes lake floor geological and geophysical data and make it more accessible. This project is a cooperative effort between investigators at the NOAA National Geophysical Data Center's Marine Geology and Geophysics Division (NGDC/MGG), the NOAA Great Lakes Environmental Research Laboratory (GLERL) and the Canadian Hydrographic Service(CHS). Bathymetric data have been collected from the Great Lakes in support of nautical charting for at least 150 years by the US Army Corp. of Engineers (before 1970), the NOAA National Ocean Service (NOS)(after 1970), and the Canadian Hydrographic Service. dem.info@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:284 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/greatlakes_bathymetry_lake_superior.xml&view=xml2text/xml-to-text-ISO&altview=none Bathymetry of Lake Superior has been compiled as a component of a NOAA project to rescue Great Lakes lake floor geological and geophysical data and make it more accessible to the public. This project is a cooperative effort between investigators at the NOAA National Geophysical Data Center's Marine Geology and Geophysics Division (NGDC/MGG), the NOAA Great Lakes Environmental Research Laboratory (GLERL) and the Canadian Hydrographic Service(CHS). Bathymetric data have been collected from the Great Lakes in support of nautical charting for at least 150 years by the US Army Corp. of Engineers (before 1970), the NOAA National Ocean Service (NOS)(after 1970), and the Canadian Hydrographic Service. dem.info@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:greatlakes_bathymetry_lake_superior http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/518.xml&view=xml2text/xml-to-text-ISO&altview=none The 8-second Homer Alaska Elevation Grid provides bathymetric data in ASCII raster format of 8-second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling dem.info@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:518 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/548.xml&view=xml2text/xml-to-text-ISO&altview=none The 1-second Humboldt, California Elevation Grid provides bathymetric data in ASCII raster format of 1-second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling dem.info@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:548 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/456.xml&view=xml2text/xml-to-text-ISO&altview=none NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to support tsunami forecasting and warning efforts at the NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory (PMEL). The DEMs are part of the tsunami forecast system SIFT (Short-term Inundation Forecasting for Tsunamis) currently being developed by PMEL for the NOAA Tsunami Warning Centers, and are used in the MOST (Method of Splitting Tsunami) model developed by PMEL to simulate tsunami generation, propagation, and inundation. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical tidal datum of Mean High Water (MHW) and horizontal datum of World Geodetic System 1984 (WGS84). Grid spacings for the DEMs range from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters). kelly.carignan@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:456 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/665.xml&view=xml2text/xml-to-text-ISO&altview=none NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to support tsunami forecasting and warning efforts at the NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory (PMEL). The DEMs are part of the tsunami forecast system SIFT (Short-term Inundation Forecasting for Tsunamis) currently being developed by PMEL for the NOAA Tsunami Warning Centers, and are used in the MOST (Method of Splitting Tsunami) model developed by PMEL to simulate tsunami generation, propagation, and inundation. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical tidal datum of North American Vertical Datum of 1988 (NAVD 88) or Mean High Water (MHW) and horizontal datum of World Geodetic System 1984 (WGS84). Cell size for the DEMs ranges from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters). kelly.carignan@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:665 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/593.xml&view=xml2text/xml-to-text-ISO&altview=none NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) to support individual coastal States as part of the National Tsunami Hazard Mitigation Program's (NTHMP) efforts to improve community preparedness and hazard mitigation. These integrated bathymetric-topographic DEMs are used to support tsunami and coastal inundation mapping. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to various vertical and horizontal datums depending on the specific modeling requirements of each State. For specific datum information on each DEM, refer to the appropriate DEM documentation. Cell sizes also vary depending on the specification required by modelers in each State, but typically range from 1/3 arc-second (~10 meters) to 8 arc-seconds (~240 meters). kelly.carignan@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:593 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/414.xml&view=xml2text/xml-to-text-ISO&altview=none NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to support tsunami forecasting and warning efforts at the NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory (PMEL). The DEMs are part of the tsunami forecast system SIFT (Short-term Inundation Forecasting for Tsunamis) currently being developed by PMEL for the NOAA Tsunami Warning Centers, and are used in the MOST (Method of Splitting Tsunami) model developed by PMEL to simulate tsunami generation, propagation, and inundation. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical tidal datum of Mean High Water (MHW) and horizontal datum of World Geodetic System 1984 (WGS84). Grid spacings for the DEMs range from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters). kelly.carignan@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:414 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/253.xml&view=xml2text/xml-to-text-ISO&altview=none NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) to support individual coastal States as part of the National Tsunami Hazard Mitigation Program's (NTHMP) efforts to improve community preparedness and hazard mitigation. These integrated bathymetric-topographic DEMs are used to support tsunami and coastal inundation mapping. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to various vertical and horizontal datums depending on the specific modeling requirements of each State. For specific datum information on each DEM, refer to the appropriate DEM documentation. Cell sizes also vary depending on the specification required by modelers in each State, but typically range from 8/15 arc-second (~16 meters) to 8 arc-seconds (~240 meters). kelly.carignan@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:253 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/282.xml&view=xml2text/xml-to-text-ISO&altview=none Bathymetry of Lake Ontario has been compiled as a component of a NOAA project to rescue Great Lakes lake floor geological and geophysical data and make it more accessible to the public. The project is a cooperative effort between investigators at the NOAA National Geophysical Data Center's Marine Geology & Geophysics Division (NGDC/MGG) and the NOAA Great Lakes Environmental Research Laboratory (GLERL). was compiled utilizing the entire historic sounding data base. The entire historic hydrographic sounding data base from the U.S. and Canada, originally collected for nautical charting purposes, was used to create a complete and accurate representation of Lake Ontario bathymetry. The U.S. data primarily came from the NOS Hydrographic Survey Data. This and other bathymetric sounding data collected by the U.S. National Ocean Service's (NOS) Coast Survey and the U. S. Army Corps of Engineers was employed to construct bathymetric contours at 1 meter intervals from 1-10 meters depth and 2 meter intervals at depths greater than 10 meters. Compilation scales ranged from 1:10,000 to 1:50,000. Bathymetric sounding data collected by the Canadian Hydrographic Service (CHS) were employed to construct bathymetric contours at 1 meter intervals and compilation scales ranging from 1:1,000 to 1:30,000. Digitization of the bathymetric contours, merging of the bathymetric contour data sets, poster construction, and preparation of a CD-ROM, were accomplished at the NGDC. Multibeam bathymetric data collected by the University of New Brunswick's Ocean Mapping Group (UNB-OMG), with support of the Geological Survey of Canada (GSC) and the CHS, were kindly made available in gridded form. In the two areas where multibeam bathymetric data were available, no other bathymetric data were used in the compilations. In some areas all available Canadian and U. S. bathymetric sounding data, collected at different times on different survey expeditions, were used to derive the contours. The U.S. coastline used was primarily the GLERL Medium Resolution Vector Shoreline dataset (Lee, 1998). Where needed for more coverage, the NOS Medium Resolution Vector Shoreline for the Conterminous U.S. (1994) dataset was used. Coastlines from the CHS bathymetric sounding data field sheets were used to complete the Canadian coastline. Images were constructed using the publicly-available software Generic Mapping Tools (GMT). dem.info@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:282 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/634.xml&view=xml2text/xml-to-text-ISO&altview=none NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to support tsunami forecasting and modeling efforts at the NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory (PMEL). The DEMs are part of the tsunami forecast system SIFT (Short-term Inundation Forecasting for Tsunamis) currently being developed by PMEL for the NOAA Tsunami Warning Centers, and are used in the MOST (Method of Splitting Tsunami) model developed by PMEL to simulate tsunami generation, propagation, and inundation. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical tidal datum of Mean High Water (MHW) and horizontal datum of World Geodetic System 1984 (WGS84). Grid spacings for the DEMs range from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters). kelly.carignan@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:634 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/249.xml&view=xml2text/xml-to-text-ISO&altview=none NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to support tsunami forecasting and modeling efforts at the NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory (PMEL). The DEMs are part of the tsunami forecast system SIFT (Short-term Inundation Forecasting for Tsunamis) currently being developed by PMEL for the NOAA Tsunami Warning Centers, and are used in the MOST (Method of Splitting Tsunami) model developed by PMEL to simulate tsunami generation, propagation, and inundation. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical tidal datum of Mean High Water (MHW) and horizontal datum of World Geodetic System 1984 (WGS84). Grid spacings for the DEMs range from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters). kelly.carignan@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:249 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/739.xml&view=xml2text/xml-to-text-ISO&altview=none NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to support tsunami forecasting and warning efforts at the NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory (PMEL). The DEMs are part of the tsunami forecast system SIFT (Short-term Inundation Forecasting for Tsunamis) currently being developed by PMEL for the NOAA Tsunami Warning Centers, and are used in the MOST (Method of Splitting Tsunami) model developed by PMEL to simulate tsunami generation, propagation, and inundation. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical tidal datum of North American Vertical Datum of 1988 (NAVD 88) or Mean High Water (MHW) and horizontal datum of World Geodetic System 1984 (WGS84). Cell size for the DEMs ranges from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters). kelly.carignan@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:739 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/312.xml&view=xml2text/xml-to-text-ISO&altview=none Bathymetry of Lake Erie and Lake Saint Clair has been compiled as a component of a NOAA project to rescue Great Lakes lake floor geological and geophysical data and make it more accessible. This project is a cooperative effort between investigators at the NOAA National Geophysical Data Center's Marine Geology and Geophysics Division (NGDC/MGG), the NOAA Great Lakes Environmental Research Laboratory (GLERL) and the Canadian Hydrographic Service(CHS). Bathymetric sounding data employed in compiling the one-meter bathymetry (National Geophysical Data Center, 1998) were collected over a 100-year period for purposes of navigation safety and nautical charting by the U. S. Army Corps of Engineers, the NOAA Coast Survey, and the Canadian Hydrographic Service. These bathymetric data, totaling several hundred thousand soundings, are separated four ways in existing archives: by whether they exist in digital form or reside only on paper sheets; and by whether they were collected by the U. S. or Canada. Final assembly of the new bathymetry has resulted from synthesis of bathymetric data from the four sources. Spacing of data control tracklines ranges from 500 to 2500 meters for the open lake and from 125 to 500 meters for nearshore areas. In preparation for bathymetric contouring, digital soundings were converted to metric units and computer plotted in color according to depth range. Contours in metric units were generated directly on overlays from paper sheets and then reduced to compilation scale and patched in. Compilation sheets were scanned and vectorized; and the resulting digital bathymetric contour data constitutes the primary product. The data were hand contoured by geomorphologists to capture and portray the maximum information available, resulting in a degree of detail not attainable with machine contouring and the density of available data. Bathymetric contours were prepared by geologists using sounding data contained in the paper archives at the scale of the survey sheets (scales ranging from 1: 100,000 to 1: 10, 000); or from sounding data contained in digital data bases at standard scales of either 1: 100,000 or 1: 50,000. Details concerning the methods of compilation are given in the western Lake Erie paper (Holcombe, et al., 1997). Bathymetric contours have been spatially reconciled with the NOAA Coast Survey nominal scale 1:80,000 digital vector shoreline, which by definition coincides with the Lake Erie low water datum, the zero-depth employed for bathymetric surveys and nautical charting. dem.info@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:312 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/454.xml&view=xml2text/xml-to-text-ISO&altview=none NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to support tsunami forecasting and modeling efforts at the NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory (PMEL). The DEMs are part of the tsunami forecast system SIFT (Short-term Inundation Forecasting for Tsunamis) currently being developed by PMEL for the NOAA Tsunami Warning Centers, and are used in the MOST (Method of Splitting Tsunami) model developed by PMEL to simulate tsunami generation, propagation, and inundation. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical tidal datum of Mean High Water (MHW) and horizontal datum of World Geodetic System 1984 (WGS84). Grid spacings for the DEMs range from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters). kelly.carignan@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:454 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/720.xml&view=xml2text/xml-to-text-ISO&altview=none NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions in the Gulf of Mexico. These integrated bathymetric-topographic DEMs were developed for NOAA Coastal Survey Development Laboratory (CSDL) through the American Recovery and Reinvestment Act (ARRA) of 2009 to evaluate the utility of the Vertical Datum Transformation tool (VDatum), developed jointly by NOAA's Office of Coast Survey (OCS), National Geodetic Survey (NGS), and Center for Operational Oceanographic Products and Services (CO-OPS). Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. Coastal Services Center (CSC), the U.S. Office of Coast Survey (OCS), the U.S. Army Corps of Engineers (USACE), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical tidal datum of North American Vertical Datum of 1988 (NAVD 88), Mean High Water (MHW) or Mean Lower Low Water (MLLW) and horizontal datum of North American Datum of 1983 (NAD 83). Cell size ranges from 1/3 arc-second (~10 meters) to 1 arc-second (~30 meters). The NOAA VDatum DEM Project was funded by the American Recovery and Reinvestment Act (ARRA) of 2009 (http://www.recovery.gov/). Matthew.Love@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:720 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/677.xml&view=xml2text/xml-to-text-ISO&altview=none NOAA's National Geophysical Data Center (NGDC) is building high-resolution digital elevation models (DEMs) for select U.S. coastal regions. These integrated bathymetric-topographic DEMs are used to support tsunami forecasting and warning efforts at the NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory (PMEL). The DEMs are part of the tsunami forecast system SIFT (Short-term Inundation Forecasting for Tsunamis) currently being developed by PMEL for the NOAA Tsunami Warning Centers, and are used in the MOST (Method of Splitting Tsunami) model developed by PMEL to simulate tsunami generation, propagation, and inundation. Bathymetric, topographic, and shoreline data used in DEM compilation are obtained from various sources, including NGDC, the U.S. National Ocean Service (NOS), the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), the Federal Emergency Management Agency (FEMA), and other federal, state, and local government agencies, academic institutions, and private companies. DEMs are referenced to the vertical tidal datum of Mean High Water (MHW) and horizontal datum of World Geodetic System 1984 (WGS84). Cell size for the DEMs ranges from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters). kelly.carignan@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:677 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/519.xml&view=xml2text/xml-to-text-ISO&altview=none The Seldovia, Alaska Elevation Grid provides bathymetric data in ASCII raster format of 1 arc-second resolution in geographic coordinates. This grid is strictly for tsunami inundation modeling dem.info@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:519 http://www.ngdc.noaa.gov/nmmrview/metadata.jsp?xml=NOAA/NESDIS/NGDC/MGG/DEM/iso/xml/264.xml&view=xml2text/xml-to-text-ISO&altview=none Bathymetry of Lake Michigan has been compiled as a component of a NOAA project to rescue Great Lakes lake floor geological and geophysical data and make it more accessible to the public. The project is a cooperative effort between investigators at the NOAA National Geophysical Data Center's Marine Geology & Geophysics Division (NGDC/MGG) and the NOAA Great Lakes Environmental Research Laboratory (GLERL). was compiled utilizing the entire historic sounding data base. This bathymetry resolves physiography of the lake floor to an extent that known features are revealed more accurately and features never before seen are revealed for the first time. Bathymetry has been compiled using the entire array of good-quality historical hydrographic soundings collected in support of nautical charting over a 120-year period by the NOAA National Ocean Service and its predecessor agency for Great Lakes surveying, the Army Corps of Engineers. More than 600,000 bathymetric soundings were employed, of which approximately 60 per cent were already in digital form, 25 per cent were digitized in conjunction with this effort, and the remaining 15 per cent were available only on paper survey sheets. Bathymetry was compiled at a scale of 1:250,000, with a contour interval of 5 meters. Density of tracklines is generally about 2000m for the open lake and ranges from 200m to 600m for nearshore areas. Soundings collected since 1903 were already reduced to the Lake Michigan mean low water datum; these were used for bathymetric contouring without further calibration or adjustments. Soundings collected prior to 1903 were reduced to the mean low water datum. In preparation for bathymetric contouring, digital soundings were converted to metric units and plotted in color; separate colors were assigned to the various depth ranges. From the paper sheets, contours in metric units were generated directly on overlays; these contours were then reduced to the compilation scale of 1:250,000 and incorporated into the map. Compilation sheets were then scanned and vectorized; and the resulting digital vector bathymetric contour data were used to generate the imagery shown on the large color plate. Images were constructed using the publicly-available software Generic Mapping Tools (GMT). dem.info@noaa.gov 2013-02-25T16:00:00.00-07:00 gov.noaa.ngdc.mgg.dem:264