gov.noaa.ngdc.mgg.dem:663 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce User Services Mailing and Physical Address

NOAA/NESDIS/NGDC E/GC 325 Broadway

Boulder CO 80305-3328 USA (303) 497-6826 (303) 497-6513 ngdc.info@noaa.gov 7:30 - 5:00 Mountain 20100312 First raster digital data NOAA Tsunami Inundation DEMs Santa Monica, California MHW Boulder, Colorado DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce User Services Mailing and Physical Address

NOAA/NESDIS/NGDC E/GC 325 Broadway

Boulder CO 80305-3328 USA (303) 497-6826 (303) 497-6513 ngdc.info@noaa.gov 7:30 - 5:00 Mountain http://www.ngdc.noaa.gov/dem/squareCellGrid/download/663 http://www.ngdc.noaa.gov/dem/squareCellGrid/download/663 Santa Monica, CA 1/3 arc-second MHW Tsunami Inundation DEM Download page for accessing DEM, metadata record and development report. download http://www.ngdc.noaa.gov/mgg/inundation/tsunami/inundation.html NOAA Tsunami Inundation Gridding Project Project web page. information DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/OAR/PMEL/NCTR > NOAA Center for Tsunami Research, Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce 20081031 Raster Digital Data NOAA Tsunami Inundation DEMs Named by primary coastal city, state in DEM. Boulder, Colorado DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce http://www.ngdc.noaa.gov/mgg/inundation/tsunami/inundation.html http://www.ngdc.noaa.gov/mgg/inundation/tsunami/inundation.html NOAA Tsunami Inundation Gridding Project Project web page. information http://www.ngdc.noaa.gov/dem/squareCellGrid/map Map Interface Graphic geo-spatial search tool for locating completed and planned NOAA tsunami inundation DEMs. search http://www.ngdc.noaa.gov/dem/squareCellGrid/search DEM text search tool Text search tool for locating completed and planned NOAA tsunami inundation DEMs. search 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 a variety of vertical datums and horizontal datum of World Geodetic System of 1984 (WGS84). Cell size for the DEMs ranges from 1/3 arc-second (~10 meters) to 3 arc-seconds (~90 meters). Developed for the Pacific Marine Environmental Laboratory (PMEL), NOAA Center for Tsunami Research program in support of NOAA's tsunami forecasting and warning efforts. R. Jason Caldwell Lisa A. Taylor Barry W. Eakins Robin R. Warnken Kelly S. Carignan Dorothy Z. Friday Elliot Lim Pamela R. Medley DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Lisa A. Taylor Mailing and Physical Address

NOAA/NESDIS/NGDC 325 Broadway

Boulder CO 80305-3328 USA (303) 497-6767 (303) 497-6958 (303) 497-6513 Lisa.A.Taylor@noaa.gov 7:30 - 5:00 Mountain Contact Data Center 20100312 Boulder, CO DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce User Services Mailing and Physical Address

NOAA/NESDIS/NGDC E/GC 325 Broadway

Boulder CO 80305-3328 USA (303) 497-6826 (303) 497-6513 ngdc.info@noaa.gov 7:30 - 5:00 Mountain 38 pages http://www.ngdc.noaa.gov/dem/squareCellGrid/getReport/663 http://www.ngdc.noaa.gov/dem/squareCellGrid/getReport/663 Digital Elevation Models of Santa Monica, California: Procedures, Data Sources and Analysis Report describing the development of the Santa Monica, California DEMs download 1932 2009 ground condition Complete As needed -119.14 -117.80 34.20 33.20 NASA/GCMD Earth Science Keywords Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth Earth Science > Land Surface > Topography > Terrain Elevation Earth Science > Land Surface > Topography > Topographical Relief Earth Science > Oceans > Coastal Processes > Coastal Elevation NASA/GCMD Platform Keywords DEM > Digital Elevation Model NASA/GCMD Data Center Keywords DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce WDC/MGG, BOULDER > World Data Center for Marine Geology and Geophysics, Boulder NASA/GCMD Data Resolution Keywords H: 1 meter - < 30 meters V: < 1 meter ISO 19115 Topic Category elevation Uncontrolled Coastal Relief Gridded elevations Integrated bathymetry and topography NASA/GCMD Location Keywords Continent > North America > United States of America > Oregon Ocean > Pacific Ocean > North Pacific Ocean Vertical Location > Land Surface Vertical Location > Sea Floor Uncontrolled Santa Monica Long Beach Los Angeles Los Angeles County Southern California Tsunami Inundation Gridding Project Digital Elevation Model DEM Light Detection and Ranging LIDAR Tsunami Inundation Gridding Project Digital Elevation Model DEM Multibeam Swath Bathymetry System MSBS Tsunami Inundation Gridding Project Digital Elevation Model DEM Sound Navigation and Ranging SONAR None. Not to be used for navigational purposes. DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Barry W. Eakins Research Scientist mailing and physical address

NOAA/NESDIS/NGDC

325 Broadway, E/GC3

Boulder Colorado 80305-3328 USA 303-497-6505 303-497-6513 Barry.Eakins@noaa.gov 9am-5pm, M-F, Mountain Time Contact NGDC's Marine Geology and Geophysics Division. http://www.ngdc.noaa.gov/mgg/aboutmgg/contacts.html http://www.ngdc.noaa.gov/dem/squareCellGrid/getGraphic/663 Perspective view of DEM JPEG Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.2.4.1420 gov.noaa.ngdc.mgg.dem:tigp Datasets were visually compared internally and externally (with other overlapping datasets and satellite images and maps) in ESRI ArcGIS for identification of anomalous elevations or data inconsistencies. Where elevation inconsistencies occurred, the most recent and/or highest resolution data set was selected for use in that region. Elevations in the older and/or lower-resolution datasets were deleted prior to building the DEM. NGDC made every effort to obtain all available digital topographic and bathymetric datasets in the region for use in building the DEM. The horizontal accuracy of bathymetric and topographic features in the DEM is dependent upon DEM cell size and the accuracy of the input datasets used to determine corresponding cell values. Topography: 10 meters due to DEM cell size. Lidar: less than 5 meters. NED: 10 meters. DEM cell-value relative-contribution factors: CSC, USACE and Ventura County Lidar: 100, , Digitized features: 100, NED: 10. Bathymetry: 10 to several tens of meters. Positional accuracy of input bathymetric datasets limits accuracy of corresponding cell values in DEM. NOS, CSUMB and USGS multibeam sonar: about 5 meters. USACE hydrographic surveys: about 5 meters. ENC extracted soundings and NGDC trackline surveys: 10 to several tens of meters. Early 20th-century NOS hydrographic soundings are limited by sparseness of deep-water soundings, and potentially large position accuracy of pre-satellite (i.e., GPS) navigation: tens to several tens of meters. Morphologic change in inland rivers and along the coast also degrades the positional accuracy of DEM features. Where present, multibeam sonar data supplant NOS hydrographic sounding data values in the DEM. DEM cell-value relative-contribution factors: USACE survey data: 100, ENC soundings: 10, Multibeam sonar data: 100, NOS hydrographic soundings: 10, Trackline survey data: 0.1. The vertical accuracy of bathymetric and topographic features in the DEM is dependent upon DEM cell size and the accuracy of input datasets used to determine corresponding cell values. Topography: 1 to 7 meters. Vertical accuracy of input topographic datasets limits accuracy of corresponding cells in DEM. Lidar: less than 1 meter, NED: 7 meters. DEM cell relative-contribution factors: CSC, USACE, and Ventura County Lidar: 100, , Digitized features: 100, NED: 10. Bathymetry: 0.1 meters to 5% of water depth. Vertical accuracy of input bathymetric datasets limits accuracy of corresponding cells in DEM. GPS-navigated NOS, USGS and CSUMB multibeam sonar : about 0.1 meter. Early 20th-century NOS hydrographic soundings are limited by sparseness of deep-water soundings, and potentially large position accuracy of pre-satellite (i.e., GPS) navigation: several meters. Where present, multibeam sonar data supersede NOS hydrographic sounding data values in DEM. DEM cell relative-contribution factors: USACE survey data: 100, ENC soundings: 10, Multibeam sonar data: 100, NOS hydrographic soundings: 10, Trackline survey data: 0.1. Gridding interpolation to determine cell values between sparse NOS hydrographic soundings in deep water degrades the vertical accuracy of deep-water elevations. DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce User Services Mailing and Physical Address

NOAA/NESDIS/NGDC E/GC 325 Broadway

Boulder CO 80305-3328 USA (303) 497-6826 (303) 497-6513 ngdc.info@noaa.gov 7:30 - 5:00 Mountain 2008 http://www.ngdc.noaa.gov/mgg/bathymetry/hydro.html http://www.ngdc.noaa.gov/mgg/bathymetry/hydro.html NOS Hydrographic Survey Database Digital database of NOS hydrographic surveys that date back to the late 19th century. download online 1932 2008 ground condition NOS Hydrographic Surveys hydrographic surveys downloaded from web site. DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce User Services Mailing and Physical Address

NOAA/NESDIS/NGDC E/GC 325 Broadway

Boulder CO 80305-3328 USA (303) 497-6826 (303) 497-6513 ngdc.info@noaa.gov 7:30 - 5:00 Mountain 2008 http://www.ngdc.noaa.gov/mgg/bathymetry/multibeam.html http://www.ngdc.noaa.gov/mgg/bathymetry/multibeam.html NGDC Multibeam Bathymetry Database Multibeam swath sonar survey data download online 1992 2006 publication date NGDC Multibeam Bathymetry Multibeam bathymetry data California State University at Monterey Bay, Seafloor Mapping Lab 2008 http://seafloor.csumb.edu/SFMLwebDATA.htm http://seafloor.csumb.edu/SFMLwebDATA.htm California State University at Monterey Bay, Seafloor Mapping Lab Multibeam swath sonar surveys for Monterey Bay download online 2001 2008 ground condition CSUMB Multibeam Swath Sonar Surveys and topographic lidar survey Multibeam surveys for Santa Barbara Island and Channel, Santa Catalina Island, and Santa Monica Bay DOC/NOAA/NOS/OCS > Office of Coast Survey, National Ocean Service, NOAA, U.S. Department of Commerce DOC/NOAA/NOS/OCS > Office of Coast Survey, National Ocean Service, NOAA, U.S. Department of Commerce Mailing and Physical

Office of Coast Survey NOAA's National Ocean Service 1315 East-West Hwy

Silver Spring MD 20910 USA (301) 713-2780 For questions, go to: http://ocsdata.ncd.noaa.gov/idrs/inquiry.aspx?frompage=ContactUs 2008 http://www.nauticalcharts.noaa.gov/mcd/enc/index.htm http://www.nauticalcharts.noaa.gov/mcd/enc/index.htm OCS Electronic Navigational Charts Digital database of NOAA nautical chart information. download online 2009 publication date ENCs coastline and bathymetric sounding data U.S. Army Corps of Engineers, Los Angeles District 2007 http://www.spl.usace.army.mil/index.html http://www.spl.usace.army.mil/index.html USACE Los Angeles District Hydrographic Surveys Digital database of hydrographic surveys in Los Angeles District download digital files via FTP 2007 ground condition USACE Hydrographic Surveys Hydrographic surveys for Los Angeles and Long Beach Harbors DOI/USGS > U.S. Geological Survey, Department of the Interior DOI/USGS > U.S. Geological Survey, U.S. Department of the Interior Mailing and Physical

12201 Sunrise Valley Drive

Reston VA 20192 USA (703) 648-4000 2008 http://ned.usgs.gov/ http://ned.usgs.gov/ USGS National Elevation Dataset Digital database of U.S. topography, in raster form (DEM) download online 1999 publication date USGS NED topography topographic DEM downloaded from web site. DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, NOAA, U.S. Department of Commerce 2002 http://maps.csc.noaa.gov/TCM/ http://maps.csc.noaa.gov/TCM/ 2002 NASA/USGS Airborne Lidar Assessment of Coastal Erosion (ALACE) Lidar CSC coastal topographic Lidar download online 1998 ground condition NOAA Coastal Services Center Lidar coastal topographic lidar DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, NOAA, U.S. Department of Commerce 2002 http://maps.csc.noaa.gov/TCM/ http://maps.csc.noaa.gov/TCM/ 2002 NASA/USGS Airborne Lidar Assessment of Coastal Erosion (ALACE) Lidar CSC coastal topographic Lidar download online 2006 ground condition NOAA Coastal Services Center Lidar coastal topographic lidar U.S. Army Corps of Engineers, Los Angeles District 2002 http://www.spl.usace.army.mil/index.html http://www.spl.usace.army.mil/index.html USACE Los Angeles District Topographic Lidar Digital database of topographic lidar in Los Angeles District download digital files via FTP 2002 ground condition USACE SHOALS Topographic Lidar USACE SHOALS topographic lidar surveys for coastal California Ventura County 2005 digital transfer hard drive 2005 publication date Ventura County LiDAR topography topographic LiDAR downloaded from county site All datasets obtained by NGDC were converted to common horizontal and vertical datums of NAD 83 geographic and NAVD 88, respectively, using FME and VDatum tool. They were also converted to common file format, ESRI point shapefiles, for visualization and inspection. 20090925 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Barry W. Eakins Research Scientist mailing and physical address

NOAA/NESDIS/NGDC

325 Broadway, E/GC3

Boulder Colorado 80305-3328 USA 303-497-6505 303-497-6513 Barry.Eakins@noaa.gov 9am-5pm, M-F, Mountain Time Contact NGDC's Marine Geology and Geophysics Division. http://www.ngdc.noaa.gov/mgg/aboutmgg/contacts.html Datasets were visually inspected with ArcGIS for identification and editing of data anomalies. Datasets were then compared with overlapping datasets to ensure data consistency. 20091023 Coastline datasets were merged and adjusted to fit satellite imagery. 20091127 xyz files of the bathymetric data were surfaced using GMT's 'surface' tool onto a 1 arc-second grid that interpolated to fill empty cells. Points extracted every 10 meters along the coastline were also included to ensure that the bathymetric grid reached zero at the coast. The resulting Arc ASCII grid was imported into ArcGIS and clipped to the coastline to remove values over land. 20091218 xyz files for each input dataset were gridded using MB-System's 'mbgrid' tool, which utilizes a high-tension spline interpolation method to fill grid cells with no input elevation values. Preferential weighting was given to more recent, higher-accuracy datasets. Gridding was performed in quadrants, each with a 5% data buffer. The grids were imported in ArcGIS and seamlessly merged to create the NAVD 88 DEM. 20100122 The NAVD 88 was quantitatively evaluated by comparing with source datasets and with elevation values extracted from NGS geodetic monuments. It was visually evaluated by converting to UTM-zone coordinates (units of meters horizontally and vertically) and then creating a slope grid to identify gridding artifacts in the NAVD 88 DEM. 20100212 A conversion grid that models the relationship between NAVD 88 and MHW was created using data points and the VDatum transformation tool. This conversion grid was added to the NAVD 88 DEM to generate the MHW DEM. 20100226 The MHW DEM was qualitativley evaluated by comparing with nautical charts and onsite. 20100305 Raster ASCII text Grid Cell 10801 14473 1 0.00009259259 0.00009259259 Decimal degrees D_WGS_1984 WGS_1984 6378137.000000 298.257224 Mean High Water 0.01 meters Explicit elevation coordinate included with horizontal coordinates Mean High Water 0.01 meters Explicit depth coordinate included with horizontal coordinates DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Barry W. Eakins Research Scientist mailing and physical address

NOAA/NESDIS/NGDC

325 Broadway, E/GC3

Boulder Colorado 80305-3328 USA 303-497-6505 303-497-6513 Barry.Eakins@noaa.gov 9am-5pm, M-F, Mountain Time Contact NGDC's Marine Geology and Geophysics Division. http://www.ngdc.noaa.gov/mgg/aboutmgg/contacts.html Downloadable Data While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. ESRI Arc ASCII 1 ASCII text version of ESRI ArcGIS raster format WINZIP 455000000 http://www.ngdc.noaa.gov/dem/squareCellGrid/getArchive/663 http://www.ngdc.noaa.gov/dem/squareCellGrid/getArchive/663 Santa Monica, CA 1/3 arc-second Tsunami Inundation MHW DEM DEM, metadata and Readme file for the Santa Monica, California DEM. download http://www.ngdc.noaa.gov/dem/squareCellGrid/download/663 Santa Monica, CA 1/3 arc-second Tsunami Inundation DEM Download page for accessing DEM, metadata record and development report. information None 20110829 20120226 20120829 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Barry W. Eakins Research Scientist mailing and physical address

NOAA/NESDIS/NGDC

325 Broadway, E/GC3

Boulder Colorado 80305-3328 USA 303-497-6505 303-497-6513 Barry.Eakins@noaa.gov 9am-5pm, M-F, Mountain Time Contact NGDC's Marine Geology and Geophysics Division. http://www.ngdc.noaa.gov/mgg/aboutmgg/contacts.html Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata FGDC-STD-012-2002 local time