Cryospheric Sciences

Image of the Week: Under the Sea

Image of the Week: Under the Sea

Always wondered how it looks like under the sea ice?
Getting an answer is simpler than you might think: Just go out to the front of McMurdo ice shelf in Antarctica and drill a tube into the sea ice. Then let people climb down and take pictures of the ice from below.
More information:
– Photo taken by Marcus Arnold, Gateway Antarctica, University of Canterbury during his November 2015, Antarctic Expedition.
– More photos of their expedition on

Nanna B. Karlsson is a post-doc at the Alfred Wegener Institute for Marine and Polar Research in Germany. She is using radar data and ice flow models to look for the oldest ice in Antarctica: Ice that is more than 1 million years old. She is also involved in projects looking at ice on Mars, Greenland and northern Norway. She tweets as @icymatters .

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