Discussion of C.R. Burn's ‘lake‐bottom thermal regimes, western Arctic coast, Canada’

Abstract If the seasonal maximum ice thickness in a lake environment is assumed to be analogous to the active layer in terrestrial permafrost, the offset concept highlights important differences between terrestrial and lacustrine thermal regimes. The processes contributing to the unique influence of...

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Bibliographic Details
Published in:Permafrost and Periglacial Processes
Main Author: Riseborough, D. W.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2005
Subjects:
Ice
Online Access:http://dx.doi.org/10.1002/ppp.534
http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.534
https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.534
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Summary:Abstract If the seasonal maximum ice thickness in a lake environment is assumed to be analogous to the active layer in terrestrial permafrost, the offset concept highlights important differences between terrestrial and lacustrine thermal regimes. The processes contributing to the unique influence of lakes on permafrost are (in order of decreasing importance): the ratio between winter (snow+surface ice freezing/conduction+free convection) and summer (forced convection) heat transfer coefficients, storage of accumulated summer heat beneath lake snow cover, and asymmetry of lake‐ice freezing and thawing geometries. Copyright © 2005 John Wiley & Sons, Ltd.