Methane bubbles in thermokarst lake ice

Numéro d’image : 12493585
Methane bubbles in thermokarst lake ice
Methane bubbles in thermokarst lake ice. When ice-rich permafrost thaws, former tundra and forest turns into a thermokarst lake as the ground subsides. The carbon stored in the formerly frozen ground is consumed by the microbial community, who release methane gas. When lake ice forms in the winter, methane gas bubbles are trapped in the ice. These processes are being studied for how they are affected by climate change and how they can contribute to global warming by directly and indirectly releasing gases such as methane and carbon dioxide. Photographed in Alaska, USA, on 1 October 2011.
Licence : Droits gérés
Crédit: Science Photo Library / US GEOLOGICAL SURVEY, Miriam Jones
Taille de l’image : 3422 px × 2567 px
Model Release : Non requis
Property Release : Non requis
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