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HEAT ADVECTION IN THE ACTIVE LAYER OF PERMAFROST: PHYSICAL MODELLING TO QUANTIFY THE IMPACT OF SUBSURFACE FLOW ON SOIL THAWING.
Session: Physical and Numerical Modelling in Cold Regions / Modélisation physique et numérique en régions nordiques
Sabine Veuille, Univerity of Montreal (Canada)
Daniel Fortier, University of Montreal, Center for Northern Studies (Canada)
Manuel Verpaelst, University of Montreal, Center for Northern Studies (Canada)
Katerine Grandmont, University of Montreal, Center for Northern Studies (Canada)
Simon Charbonneau, University of Montreal (Canada)
To measure the impact of water flow on permafrost degradation, several experiments of active layer physical models were conducted in laboratory. Eight wooden cells filled with different quasi-saturated soils were subjected, for the first half, to a thawing by conduction and for the other half to a thawing by convection (water flow). The purpose of this protocol is to develop, with experimental data, tools to quantify the efficiency of thawing by conduction in comparison to thawing by convection.
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