Thurston Island, Antarctica
24 November 2017
This image combined three passes by Sentinel-1's radar in March, April and May 2017. Each was assigned a colour – red, green and blue – and when merged, changes between the acquisitions appear in various colours.
The ice-covered island appears grey, showing no change over the three-month period. But changes in sea ice in the upper part of the image appear as speckles of green, red and blue.
In the lower part of the image we can see part of the Abbot Ice Shelf appearing in light blue.
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