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(Article of periodic en Anglais - 2009)

Document title

Buffering of sublimation loss of subsurface ice by percolating snowmelt : a theoretical analysis

Authors(s) and Affiliation(s)

SCHORGHOFER N. (1) ;
(1) Inst. for Astronomy, univ. of Hawaii, Honolulu, ETATS-UNIS

Abstract

Subsurface ice in cold hyperarid conditions retreats by sublimation and diffusion through the overlying soil layer. Here, it is shown that percolating meltwater, if present, can counterbalance sublimation loss effectively and thus increase the persistence time of subsurface ice. Time averaging of transport equations is used to evaluate the significance of percolation in an otherwise complex dynamical system. The reduction in sublimation loss is approximately given by the amount of meltwater multiplied by the percolation depth and divided by the depth to the ice table. It is plausible that percolation is even more effective during a warmer, wetter climate

Source

Article of periodic

published at : Permafrost and periglacial processes / ISSN 1045-6740 / CODEN PEPPED

Editor : Wiley, Chichester - ROYAUME-UNI (1990)

Millesime : 2009, vol. 20, no3 [pp. 309-313]

Bibliographic references : 12 ref.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.646

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
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