Field work update: Methane and subsea permafrost studies in the East Siberian Arctic Shelf

Igor Semiletov and Natalia Shakhova of Arctic Marine Exploration, Russia, have recently completed the first phase of their field work in the East Siberian Arctic Shelf, looking at methane escaping from submarine permafrost.

They carried out a 24-day expedition, using a transport caravan, to the Laptev Sea. The main goal was to obtain new data for determining rates of subsea permafrost degradation in order to address the following questions:

  • Are changing East Siberian Arctic Shelf thermal conditions causing the permafrost to thaw?
  • Do accelerated rates of permafrost degradation lead to the development of taliks (thaw bulb beneath a body of water) that act as CH4 vents to the overlying seawater and potentially to the atmosphere?

Read the full report here: Spring 2014 Laptev Sea Expedition

Website by Martin Black
Last updated on 10-02-2021 14:22