Articles | Volume 11, issue 3
Research article
06 Jun 2017
Research article |  | 06 Jun 2017

Numerical modelling of convective heat transport by air flow in permafrost talus slopes

Jonas Wicky and Christian Hauck

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Cited articles

Arenson, L. U. and Sego, D. C.: Considering convective air fluxes in the design of engineered structures in cold regions, in: Proceedings of the 59th Canadian geotechnical conference and the seventh joint CGS/IAH-CNC groundwater specialty conference, 1–4 October 2006, Vancouver, British Columbia, Canada, 1–8, 2006.
Arenson, L. U. and Sego, D. C.: Protection of mine waste tailing ponds using cold air convection, in: Assessment and Remediation of Contaminated Sites in the Arctic and Cold Climates (ARCSACC), edited by: Biggar, K., Cotta, G., Nahir, M., Mullick, A., Buchko, J., Ho, A., and Guigard, S., Edmonton, AB, Canada, 256–264, 2007.
Arenson, L. U., Sego, D. C., and Newman, G.: The use of a convective heat flow model in road designs for Northern regions, in: IEEE EIC Climate Change Conference, 9–12 May 2006, Ottawa, Ontario, Canada, 1–8, 2006.
Arenson, L. U., Pham, H.-N., Klassen, R., and Sego, D. C.: Heat convection in coarse waste-rock piles, in: Proceedings of the 60th Canadian Geotechnical Society (CGS) conference and 8th joint CGS/IAH-CNC groundwater specialty conference, 21–24 October 2007, Ottawa, Ontario, Canada, 1500–1507, 2007.
Balch, E. S.: Glacieres, or Freezing Caverns, Allen Lane & Scott, Philadelphia, USA, 1900.
Short summary
Talus slopes are a widespread geomorphic feature, which may show permafrost conditions even at low elevation due to cold microclimates induced by a gravity-driven internal air circulation. We show for the first time a numerical simulation of this internal air circulation of a field-scale talus slope. Results indicate that convective heat transfer leads to a pronounced ground cooling in the lower part of the talus slope favoring the persistence of permafrost.