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PIA14556: NASA Research Leads to First Complete Map of Antarctic Ice Flows
This image is the first complete map of the speed and direction of ice flow in Antartica. The thick black lines delineate major ice divides. Subglacial lakes in Antarctica's interior are also outlined in black.
 Target Name:  Earth
 Is a satellite of:  Sol (our sun)
 Spacecraft:  ALOS PALSAR
Envisat
Landsat
MODIS
RADARSAT-2
 Product Size:  1192 x 1192 pixels (w x h) 
 Produced By:  JPL 
 Full-Res TIFF:  PIA14556.tif (4.268 MB)
 Full-Res JPEG:  PIA14556.jpg (240.9 kB)  

Click on the image above to download a moderately sized image in JPEG format (possibly reduced in size from original)

Original Caption Released with Image:

First complete map of the speed and direction of ice flow in Antarctica, derived from radar interferometric data from the Japan Aerospace Exploration Agency's ALOS PALSAR, the European Space Agency's Envisat ASAR and ERS-1/2, and the Canadian Space Agency's RADARSAT-2 spacecraft. The color-coded satellite data are overlaid on a mosaic of Antarctica created with data from NASA's Moderate Resolution Imaging Spectroradiometer (MODIS) instrument on NASA's Terra spacecraft. Pixel spacing is 984 feet (300 meters). The thick black lines delineate major ice divides. Subglacial lakes in Antarctica's interior are also outlined in black. Thick black lines along the coast indicate ice sheet grounding lines.

Image Credit:
NASA/JPL-Caltech/UCI

Image Addition Date:
2011-08-18