Pockmarks -- Evidence of Gas Release (IMAGE)
Caption
Pockmarks are scars on the ocean floor, an evidence of gas release. These likely appeared as the ice sheet retreated from the western part of Svalbard, and the area began to submerge in seawater again. They prove that release of methane followed the retreat of the ice sheet.
Credit
Illustration:Alexey Portnov/CAGE
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