HEAT ADVECTION IN THE ACTIVE LAYER OF PERMAFROST: PHYSICAL MODELLING TO QUANTIFY THE IMPACT OF SUBSURFACE FLOW ON SOIL THAWING.

Sabine Veuille, Daniel Fortier, Manuel Verpaelst, Katerine Grandmont, Simon Charbonneau

In the proceedings of: GeoQuébec 2015: 68th Canadian Geotechnical Conference & 7th Canadian Permafrost Conference

Session: Physical and Numerical Modelling in Cold Regions / Modélisation physique et numérique en régions nordiques

ABSTRACT: 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.

RÉSUMÉ: n du pergélisol plusieurs expériences consistant à modéliser physiquement la couche active sont menées en laboratoire. Huit cellules de bois remplies de différents sols quasi-saturés sont soumises pour la moitié à un dégel favorisant la conduction et pour dégel par conduction par rapport au dégel par convection à partir de ces données expérimentales.

Please include this code when submitting a data update: GEO2015_722

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