Omulyakhskaya and Khromskaya Bays, Northern Siberia

Autor/Urheber:

Jesse Allen and Robert Simmon

Shortlink:

https://www.dewiki.de/b/27f0e0

Quelle:

Wikimedia Commons

Größe:

4696 x 3131 Pixel (4920756 Bytes)

Beschreibung:

Natural-colour image of the Omulyakhskaya and Khromskaya Bays, Russia. The land around the bays is dotted with thermokarst lakes, which result from water released by thawing permafrost. The water in a thermokarst lake doesn’t always stay put; these lakes can melt through the surrounding permafrost and drain into a nearby water body, especially if it sits at a slightly lower elevation. This appears to have occurred in multiple lakes between the bays shown above. (The compound lakes are identifiable by their uneven margins.) Coastal erosion and river migration also can deplete the lakes. Dark brown spots, especially numerous east of Khromskaya Bay, are probably locations of former thermokarst lakes.

Image captured by the Thematic Mapper on the Landsat 5 satellite. Landsat data provided by the United States Geological Survey.

Lizenz:

Public domain

Credit:

NASA Earth Observatory

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