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Envisat image of ice above Lake Vostok
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- Title Envisat image of ice above Lake Vostok
- Released 10/12/2003 3:25 pm
Envisat wide-swath radar image of ice above the sub-glacial Lake Vostok, acquired 13 March 2003. The freshwater lake's full extent was first mapped using ERS-1 data in the early 90s, because the ice floating over the lake has a smoother surface than the ground-based ice surrounding it. More recently, ERS InSAR results have comfirmed its waters are influenced by tides.