• Image of sand dunes

    Kobuk Valley

    National Park Alaska

Thermokarst in Alaska's Arctic

December 07, 2012 Posted by: Marci Johnson

A new video has been released by the National Park Service highlighting the work being done to document and monitor the effects of melting permafrost.  Terrestrial Ecologist Dave Swanson describes how ice melting below the surface of the tundra progresses into a thaw slump and how 3-dimensional modeling provides a means of measuring this change over time.  Click on the image below for a link to YouTube. 

Click to watch video

To learn more, click on the image below to read the Permafrost Resource Brief.

Permafrost Resource Brief

1 Comments Comments Icon

  1. Gerald - Woodbury, MN
    December 19, 2012 at 04:32

    Because I currently enjoy the ice age changes in MN, I am fascinated by changes in the far north. Our human timeline is limited, the globe has a longer view.


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Did You Know?

Two rustic cabins surrounded by trees. The large one sits on the ground and the small one sits on stilts to protect stored food from animals

In 1940, archeologist J. Louis Giddings traveled down the Kobuk River on a homemade raft, with three young Native men as guides. They found many ancient house depressions, including one at Onion Portage in Kobuk Valley National Park. The site is now believed to be about 10,000 years old.