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.
This radar image, called a coseismic interferogram, using satellite data from the European Space Agency's Envisat depicts ground displacements resulting from the March 11, 2011, magnitude 9.0 Tohoku earthquake in Japan.