Post on 06-Jan-2016
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Topography and Bathymetry in Alaska
Kirk Waters
Alaska Wave Climatologies Workshop
CSC Topography and Bathymetry Efforts
LiDAR Coverage
IFSAR Coverage
CSC Topography and Bathymetry Efforts
** Existing LiDAR beach coverage (blue) enlarged for visualization
JALBTCX Data On-line
Spring 2004 Fall 2004
500 meters landward topography1000 meters seaward bathymetryPlan to cover CONUS oceanfront where there is sand.
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
Lidar Topography at Kivalina
NOS Alaska Hydro Surveys
NGDC holdings
T-Sheets and Shoreline
T-sheet zoom
Tundra
What else should we vectorize?
T-sheet Status
Image credit: Jon Swallow
Cape Edgecumbe: Lidar Topo/BathyNGS Data Fusion study
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
Topo LIDAR
Bathy LIDAR
Topo/Bathy LIDAR Merged with NOAA Chart
Topo LIDAR MHW Shoreline
Hydrographic Soundings (fathoms)
Topographic Elevations (feet)
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.