The Port Alexander DEM integrates bathymetry and topography in the area surrounding Port Alexander on the southeastern corner of Baranof Island in southeast Alaska. The DEM has a 1/3 arc-second (~10 meter) cell size, and is referenced to a vertical datum of mean high water. It was built in March 2011 to support NOAA's Tsunami Program.
|Region||Gulf of Alaska|
|Horizontal Datum||WGS 84|
|Vertical Datum||MHW (meters)|
|Vertical Transformation||Source elevation data transformed vertically using a constant offset derived from NOAA tide stations.|
|Cell Size||1/3 arc-second|
|Source||NOAA / NGDC / MGG|
|Developer||NOAA / NGDC / MGG|
|Project||NOAA Tsunami Inundation|
|Contact||Barry W Eakins @ NOAA / NGDC|
WARNING: DEM not to be used for navigation.