Time-lapse in situ observations of permafrost thaw
What we did:
Over 63 days, we heated the ground in Fairbanks, Alaska, which deepened the permafrost table by 1.5 m. We observed ~10 cm of subsidence. Property changes describe coupled thermal/hydro/mechanical processes before and during surface subsidence.
What we learned:
This experiment provides field calibration for existing multiphysics thaw models developed theoretically, numerically, and in the laboratory.
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