topography and bathymetry in alaska kirk waters alaska wave climatologies workshop
Post on 19-Dec-2015
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![Page 1: Topography and Bathymetry in Alaska Kirk Waters Alaska Wave Climatologies Workshop](https://reader038.vdocument.in/reader038/viewer/2022110322/56649d3f5503460f94a1929a/html5/thumbnails/1.jpg)
Topography and Bathymetry in Alaska
Kirk Waters
Alaska Wave Climatologies Workshop
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CSC Topography and Bathymetry Efforts
LiDAR Coverage
IFSAR Coverage
CSC Topography and Bathymetry Efforts
** Existing LiDAR beach coverage (blue) enlarged for visualization
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JALBTCX Data On-line
Spring 2004 Fall 2004
500 meters landward topography1000 meters seaward bathymetryPlan to cover CONUS oceanfront where there is sand.
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Lidar Topography in Shishmaref and Kivalina
• Data collected by Aerometric via NOAA/NGS contract• July and August 2004• Multiple collections done. Some two-meter resolution,
some one-meter resolution.• Classified for bare earth.• Will be available on-line• Approximately 750 million
points
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Lidar Topography at Kivalina
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NOS Alaska Hydro Surveys
NGDC holdings
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T-Sheets and Shoreline
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T-sheet zoom
Tundra
What else should we vectorize?
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T-sheet Status
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Image credit: Jon Swallow
Cape Edgecumbe: Lidar Topo/BathyNGS Data Fusion study
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Experiment ObjectivesExperiment Objectives
• Collect Topographic and Bathymetric information safely and at same temporal scale
• Provide NOAA Ship Rainier with shoreline and near shore hydrographic data within days of acquisition
• Test a new concept of survey operations
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Topo LIDAR
Bathy LIDAR
Topo/Bathy LIDAR Merged with NOAA Chart
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Topo LIDAR MHW Shoreline
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Hydrographic Soundings (fathoms)
Topographic Elevations (feet)
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Summary
• The Coastal Services Center has coastal topography available for most of CONUS.
• The shoreline for Alaska has been vectorized from T-sheets where they exist.
• More information might be obtainable from the T-sheets if we can determine what is needed.
• Limited high-resolution topography exists, but there is data for Shishmaref and Kivalina
• Combining technologies can provide a seamless elevation dataset across the land-water interface.