topography and bathymetry in alaska kirk waters alaska wave climatologies workshop

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.