Articles | Volume 10, issue 4
https://doi.org/10.5194/tc-10-1449-2016
https://doi.org/10.5194/tc-10-1449-2016
Research article
 | 
12 Jul 2016
Research article |  | 12 Jul 2016

Coastal dynamics and submarine permafrost in shallow water of the central Laptev Sea, East Siberia

Pier Paul Overduin, Sebastian Wetterich, Frank Günther, Mikhail N. Grigoriev, Guido Grosse, Lutz Schirrmeister, Hans-Wolfgang Hubberten, and Aleksandr Makarov

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Short summary
How fast does permafrost warm up and thaw after it is covered by the sea? Ice-rich permafrost in the Laptev Sea, Siberia, is rapidly eroded by warm air and waves. We used a floating electrical technique to measure the depth of permafrost thaw below the sea, and compared it to 60 years of coastline retreat and permafrost depths from drilling 30 years ago. Thaw is rapid right after flooding of the land and slows over time. The depth of permafrost is related to how fast the coast retreats.