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NOAA/NESDIS/NGDC
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Midway Atoll v2, PI 3 arc-second MHW DEM

This Midway Atoll DEM updates the initial Midway Atoll DEM of 2009 using new topographic lidar data collected by the U.S. Geological Survey. The integrated bathymetric-topographic DEM covers Sand Island and Eastern Island, collectively called Midway Island, and the surrounding deep ocean floor. The DEM has a 3 arc-second (~90 meter) cell size, and is referenced to a vertical datum of mean high water. A smaller, 1/3 arc-second (~10 meter) DEM was also developed. The DEMs were built in May 2012 to support NOAA's Tsunami Program.



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Name Midway Atoll v2
States Pacific Islands
Region Pacific Islands
Extent
28.7
-177.88 -176.87
27.77
Date Completed 2012-05-14
Type Coastal Inundation
Horizontal Datum WGS 84
Projection Geographic (degrees)
Vertical Datum MHW (meters)
Vertical Transformation Source elevation data transformed vertically using a constant offset derived from NOAA tide stations.
Coverage Bathy-topo
Cell Size 3 arc-second
Registration Grid-node
Version 2
Source NOAA / NGDC / MGG
Developer NOAA / NGDC / MGG
Project NOAA Tsunami Inundation
Contact Barry W Eakins @ NOAA / NGDC
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WARNING: DEM not to be used for navigation.

How to cite this DEM

Grothe, P.R., B.W. Eakins, and L.A. Taylor, 2012. Updated Coastal DEMs of Midway Atoll, NOAA National Geophysical Data Center technical report, Boulder, CO, 1 p.
Questions or Comments: dem.info@noaa.gov