Latest Issue of Science News


News

Bird's-eye view of Antarctic ice loss

Satellite images of Antarctica between 1992 and 2006 indicate that the continent was losing ice much faster at the end of that period than it was a decade before.

Snow that falls on Antarctica makes its way to the sea as ice via glaciers, some of which flow faster than others (SN: 3/31/07, p. 202). Using data gathered by Earth-orbiting crafts, Eric Rignot, a glaciologist at NASA's Jet Propulsion Laboratory in Pasadena, Calif., and his colleagues determined the thickness of ice fringing the continent's coast. That data, combined with the speed of the ice streams and estimates of the continent's snowfall, allowed the team to estimate Antarctica's ice loss each year.

Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.

X
This article is available only to subscribing members. Join SSP today or Log in.