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Metadata
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ID
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A-2-04-FL
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Also Known As
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EAARL Lidar
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Abstract
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United States Geological Survey, St. Petersburg,
Florida,National Park Service,National Aeronautics and Space
Administration. LIDAR data (LIDAR) of field activity
A-2-04-FL in Dry Tortugas National Park, FL from 01/01/2004
to 01/01/2004
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Organization
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United States Geological Survey, St. Petersburg, Florida
National Park Service
National Aeronautics and Space Administration
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Activity Type
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LIDAR
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Platform
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Airplane
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Area of Operation
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Dry Tortugas National Park, FL
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Location map
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Bounding Coordinates
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25.25000
-83.50000 -80.00000
24.25000
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Dates
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01/01/2004 (JD 001) to 01/01/2004 (JD 001)
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Analog Materials
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list
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Index map
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Information Specialist
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Equipment Used
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Purpose
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One objective of this research is the creation of techniques for the
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surveying of coral reefs for the purposes of habitat mapping, ecological
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monitoring, change detection, and event assessment (e.g., bleaching,
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hurricanes, disease outbreaks, etc.). As part of this project, data from an
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innovative instrument developed at NASA Wallops Flight Facility, the NASA
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Experimental Airborne Advanced Research Lidar (EAARL), was used. This sensor
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has the potential to make significant contributions in this realm for
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measuring water depth and conducting cross-environment surveys. High spectral
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resolution, water-column correction, and low costs were found to be key
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factors in providing accurate and affordable imagery to managers of coastal
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tropical habitats.
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Information to be Derived
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Measure subaerial and submarine coastal topography
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Summary
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Raw lidar data is not in a format that is generally usable by
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Park Service resource managers and scientists for scientific analysis.
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Converting dense lidar elevation data into a readily usable format without
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loss of essential information requires specialized processing. The USGS
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converts raw lidar data into a GIS-compatible map product to be provided to
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National Park Service GIS specialists, managers, and scientists. The primary
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tool used in the conversion process is Airborne Lidar Processing System
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(ALPS), a multi-tiered processing system developed by a USGS/NASA
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collaborative project for the use of subaerial and submarine lidar in coastal
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change assessment. Specialized processing algorithms are used to convert raw
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waveform lidar data acquired by the EAARL to georeferenced spot (x,y,z)
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returns for submarine topography. These data are then converted to the NAD83
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horizontal and NAVD88 vertical datum (using the Geoid 99 model). The final
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products are 2x2-km map tiles written out in a standard geotiff format with
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associated metadata information. These tiles are created for visual
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interpretation and regional quantitative analysis. Metadata files include the
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standard FGDC format.
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Publications
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Brock, J.C., Wright, C.W., Patterson, Matt, Nayegandhi, Amar, and Patterson, Judd, 2006, Dry Tortugas National Park, U.S. Geological Survey Open File Report 2006-1244
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publication html
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Got Help?
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For A-2-04-FL, we would appreciate any information on -- chief scientist, contract, crew, days at sea, dive count, funding, kms of navigation, national plan, NGDC Info, notes, owner, ports, project, project number, scanned materials, seismic description, station count, station description, submersible, tabulated info.
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