Permafrost - what is it?

What is permafrost? What happens when permafrost thaws? This animation answers these questions.
Scientists at the Alfred Wegener Institute conduct annual expeditions to the polar regions in order to understand the diverse processes in the permafrost an to precisely assess the impacts of it´s degradation.

Copyright: Alfred Wegener Institute / Lars Grübner
http://www.awi.de/en.html
http://www.awi.de/en/focus/permafrost...

This animation was created in cooperation with the agency eventfive GmbH, Bremen.
http://www.eventfive.de
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Видео Permafrost - what is it? канала Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung