Elizabeth Herndon Stands on a Palsa (IMAGE)

University of Tennessee at Knoxville

Elizabeth Herndon Stands on a Palsa

Caption

Elizabeth Herndon stands on a palsa, a patch of ground that has permafrost less than a meter below the soil surface. Using special instrumentation, Herndon collects soil water and measures oxygen in the pore space-- the void space within soil that can be filled by water or air. In the foreground is a bog area where permafrost has completely thawed and caused the ground to collapse and pool with water.

Credit

University of Tennessee, Knoxville

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