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Researchers release the most accurate map of Antarctica terrain

 
Anonymer Feigling
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09/06/2018 05:10 AM

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Researchers release the most accurate map of Antarctica terrain
A team of researchers led by the University of Minnesota and The Ohio State University have released the most accurate high-resolution terrain map of Antarctica ever created. The map uses high-resolution satellite images to show the continent in stunning detail and will provide new insight on climate change.

The map, called the Reference Elevation Model of Antarctica (REMA), has a resolution of 8 meters (about 26 feet). This means that researchers now know the height of every mountain and all the ice in all of Antarctica within a few feet. In the past, the most accurate topographical map was within about 1 kilometer or about a half mile in elevation. The new map covers about 14 million square kilometers (5.4 million square miles), which is about 50 percent larger than the lower 48 states of the U.S.

The map also is precise and accurate enough that it will allow scientific teams to plan trips over the treacherous Antarctic terrain.

The project began with images taken from a constellation of polar-orbiting satellites about 400-700 kilometers in space. These satellites have been collecting imagery for more than six years to get collect enough imagery for this project.

The Ohio State University researchers developed the software to process the images and University of Minnesota researchers put the maps together over the last five years with computer processing help from the University of Illinois Urbana-Champaign that provided the Blue Waters supercomputer, one of the largest academic supercomputers in the world. The map processed millions of images to create the high-resolution topographic map.

Support for REMA was provided by the U.S. National Geospatial-Intelligence Agency and the National Science Foundation.

<50%
[link to twin-cities.umn.edu (secure)]

MAP (REMA)
[link to www.pgc.umn.edu (secure)]
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