2008 USACE Great Lakes Topo/Bathy Lidar: Lake Huron, Michigan
These files contain topographic and bathymetric lidar data collected by the Compact Hydrographic Airborne Rapid Total Survey (CHARTS) system along the Lake Huron coast of Michigan in Huron, Sanilac, and St. Clair Counties during August 12-17, 2008. CHARTS integrates topographic and bathymetric lidar sensors, a digital camera, and a hyperspectral scanner on a single remote sensing platform for use in coastal mapping and charting activities. Data coverage generally extends along the coastline from the waterline inland 500 meters (topography) and offshore 1,000 meters or to laser extinction (bathymetry). The topographic lidar sensor has a pulse repetition rate of 9 kHz at 1064 nm (near-infrared wavelength). The bathymetric lidar sensor has a pulse repetition rate of 1 kHz at 532 nm (green wavelength). Native lidar data is not generally in a format accessible to most Geographical 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) GEOID03 model is used to transform the vertical positions from ellipsoid to orthometric heights referenced to the North American Vertical Datum of 1988 (NAVD88). Upon receipt at the NOAA Coastal Services Center, the data were converted to las format and to ellipsoid heights using GEOID03 for data storage and Digital Coast provisioning purposes. Additionally, the bathymetric lidar data points were classified according to the ASPRS LAS 1.2 classification scheme as 11 (bathymetry) and the topographic last return lidar data points were classified as 1 (unclassified).
|Distributor||DOC/NOAA/NOS/OCM > Office for Coastal Management, National Ocean Service, National
Oceanic and Atmospheric Administration, U.S. Department of Commerce
|Dataset Point of Contact||Data Production Manager
US Army Corps of Engineers (USACE) Joint Airborne Lidar Bathymetry Technical Center of eXpertise (JALBTCX)
Documentation links not available.
|Data Presentation Form:||
|Dataset Progress Status||Complete|
|Data Update Frequency:||As needed|
Sensor malfunction in the survey area hindered the acquisition of bathymetric data in boxes 08, 09, 10, and 11 which and resulted in incomplete coverage.
|Purpose:||These data were collected as a part of the NCMP (National Coastal Mapping Program) to depict the elevations ABOVE AND/OR BELOW the water for the First Return OR Last Return OR Hydro in the Michigan coastal zone.|
|Time Period:||2008-08-12 to 2008-08-17|
|Spatial Reference System:||urn:ogc:def:crs:EPSG::4269 Ellipsoid in Meters|
|Spatial Bounding Box Coordinates:||
|Spatial Coverage Map:|
|Use Constraints||No constraint information available|
|Fees||Fee information not available.|
Last Modified: 2014-03-14
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