gov.noaa.csc.maps:usace2005_ec DOD/USARMY/USACE/JALBTCX > Joint Airborne Lidar Bathymetry Technical Center of Expertise, U. S. Army Corps of Engineers, U.S. Army, U. S. Department of Defense Unpublished material Unknown Final globe Joint Airborne Lidar Bathymetry Technical Center of Expertise JALBTCX The data contained in these files are hydrographic and topographic data collected by the SHOALS-1000T system along the Virginia coastline as part of the National Coastal Mapping Program. The data are broken into 36 files, with each covering approximately 5km of shoreline and 6 files, with each covering the barrier islands. The box layout index is provided by the shape files, "va_boxes.shp" and "VA_barrier_isles.shp", and the box numbers for labels are in the "ID" field of the shape file. The data file names are based on the year, project, area name, box number, topo first return (TF) or hydro + topo last return (HTL). Example file names are 2005_NCMP_VA_01g_TF.xyz, 2005_NCMP_VA_01g_HTL.xyz, 2005_NCMP_VA_barrier_01g_TF.xyz and 2005_NCMP_VA_barrier_01g_HTL.xyz. The ASCII columns are longitude, latitude, elevation, date, time, and intensity (topo shots) or depth confidence (hydro shots). The data were collected and processed in geographic coordinates and ellipsoid heights. The positions are provided relative to NAD83 in decimal degrees of longitude and latitude. The heights were converted from ellipsoid to geoid heights (NAVD88) using NGS' Geoid03 model file "g2003u08.bin" with the results in meters. These data were collected as a part of the National Coastal Mapping Program to depict the elevations above and below water in the Virginia coastal zone . 20050903 20050908 Ground Condition Complete As needed -075.01 -073.90 40.52 38.88 None Lidar Bathymetry Topography None New Jersey None September 2005 None These data depict the heights at the time of the survey and are only accurate for that time. Acknowledgement of the Joint Airborne Lidar Bathymetry Center of Expertise (JALBTCX) would be appreciated in any publications or derived products. Data are not attributed. N/A These data are not attributed. Lidar data between different flight lines matched within 0.20 meters These data covered the required survey area with minimal gaps in data coverage. The data postings are very consistent with postings at about 1.3m density. The data positions were obtained using post processed KGPS methods. The horizontal accuracy of the data is better than +/- 0.75m. 0.75 1 Sigma The data positions were obtained using post processed KGPS methods. The vertical accuracy of the data is better than +/- 0.20m. 0.20 1 Sigma JALBTCX(comp.) Unpublished material Unknown globe disc 20050903 20050908 Ground Condition 05021, 05023 This is an xyz dataset collected and provided by CESAM-OP-J, JALBTCX. These data were collected using a SHOALS-1000T system. It is owned and operated by Fugro Pelagos performing contract survey services for the US Army Corps of Engineers. The system collects topographic lidar data at 10kHz and hydrographic data at 1kHz. The system also collects RGB imagery at 1Hz. Aircraft position, velocity and acceleration information are collected through a combination of Novatel and POS A/V equipment. Raw data are collected and transferred to the office for downloading and processing in SHOALS GCS software. GPS data are processed using POSPac software and the results are combined with the lidar data to produce 3-D positions for each lidar shot. These data are edited using Fledermaus software where anomalous data are removed from the dataset. The edited data are unloaded from SHOALS GCS, converted from ellipsoid to orthometric heights, based on the GEOID03 model, and split into greographic tiles covering approximately 5km each. 20060406 The NOAA Coastal Services Center (CSC) received files in ascii format. The files contained lidar intensity and elevation measurements. CSC performed the following processing on the data to make it available within the Lidar Data Retrieval Tool (LDART): 1. Each hydro/topo last return ascii file was converted to las files. Default values for which there is no corresponding input were assigned as follows for each las elevation data record: intensity = 0, retn = 1, nret = 1, class = 0 2. The las files were sorted by latitude and the las header fields were updated. 20060801 Coastal Remote Sensing Program TCM Project Scientist mailing and physical address

2234 South Hobson Avenue

Charleston South Carolina 29405 United States (843) 740-1200 csc@csc.noaa.gov The NOAA National Geophysical Data Center (NGDC) received Lidar data files on external harddrive. The disk contains LiDAR data from the NOAA Coastal Services Center. This data is currently being served via LDART at http://www.csc.noaa.gov/ldart . This data can be used to re-populate the system. The data are provided on this disk in two forms, ascii x,y,z data and also in LAS format. LAS format is an industry standard for serving LiDAR data. The data are exclusively in geographic coordinates, however, the datums used vary. Most is NAD 83, however some is in ITRF. Vertical systems include both ellipsoid (ITRF and NAD 83) and NAVD 88. For NAVD 88 values, Geiod 03 is primarily used; however, data received in NAVD 88 prior to 2003 was processed using Geoid 99. 20060103 DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Kelly Stroker Mailing and Physical Address

NOAA/NESDIS/NGDC E/GC1 325 Broadway

Boulder CO 80305-3328 USA (303) 497-4603 (303) 497-6958 (303) 497-6513 kelly.stroker@noaa.gov 7:30-5:00 Mountain Contact Data Center 0.00000001 0.00000001 Decimal degrees North American Vertical Datum of 1988 0.01 Meters Explicit elevation coordinate included with horizontal coordinates NAVD88 0.01 Meters Explicit depth coordinate included with horizontal coordinates JALBTCX mailing and physical address

7225 Stennis Airport Road, STE100

Kiln MS 39556 228-252-1103 8 am to 5 pm Monday through Friday These data are provided "As-Is" and are noted to be a preliminary release of a larger collection area. NOAA Coastal Services Center Coastal Remote Sensing Program Manager mailing and physical address

2234 South Hobson Avenue

Charleston SC 29405-2413 none csc@csc.noaa.gov Any conclusions drawn from analysis of this information are not the responsibility of NOAA or the Coastal Services Center. This data can be obtained on-line at the following URL: http://www.csc.noaa.gov/ldart. DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Kelly Stroker Mailing and Physical Address

NOAA/NESDIS/NGDC E/GC1 325 Broadway

Boulder CO 80305-3328 USA (303) 497-4603 (303) 497-6958 (303) 497-6513 kelly.stroker@noaa.gov 7:30-5:00 Mountain Contact Data Center Disclaimer 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. The National Geophysical Data Center serves as the archive for this LIDAR data. NGDC should only be contacted for this data if it cannot be obtained from NOAA Coastal Services Center. 20060802 20061115 NOAA Coastal Services Center Keil Schmid Metadata Specialist mailing and physical address

2234 South Hobson Avenue

Charleston SC 29405-2413 none metadata@csc.noaa.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998