The Chignik, Alaska DEM covers a portion of the northeastern Alaskan Peninsula and includes the community of Chignik and the islands of Mitrofania and Nakchamik. The DEM has a 1/3 arc-second (~10 meter) cell size, and is referenced to a vertical datum of mean high water. A larger, 1 arc-second (~30 meter) DEM was also developed. The DEMs were built in October 2008 to support NOAA's Tsunami Program.
|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.