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Ecosystems

Question

How can the ground in Alaska become unstable?

1 year ago

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Sabina Zemlak


2 Answers

Tracey M Profile Picture
Tracey M Verified Sherpa Tutor āœ“

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In Alaska, degrading permafrost, steep slopes, heavy rain, retreating glaciers, ground-shaking from earthquakes, and isostatic rebound are important mechanisms that can trigger devastating landslides.

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Jacqueline M Verified Sherpa Tutor āœ“

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There are two reasons for this. Firstly, Alaska is in an area that has earthquakes and secondly during summer months melting permafrost (frozen sub-soil), forms marshland, known as 'muskeg' which makes buildings and roads unstable.

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