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Record #126217:

Effect of temperature cycles on permafrost formation time / Virgil J. Lunardini.

Title: Effect of temperature cycles on permafrost formation time / Virgil J. Lunardini.
Author(s): Lunardini, Virgil J.
Date: 1993.
In: CRREL Special Report. (1993.), Vol. 93-22 (1993)
Abstract: Calculations and examples indicate that growth of heterogenetic permafrost, with pure conduction heat transfer, is governed by transient surface temperature, geothermal heat flow and thermal properties of soil. Predicted times can be of order of geologic time scales because of very large sensible heat inherent in soil with geothermal gradient. When effect of cyclic warming and cooling is also considered, predicted formation times are significantly reduced. However, cyclic thermal modulation will only be effective for relatively shallow permafrost, since warming times are much shorter than cooling times.
Notes:

CRREL Special Report. Vol. 93-22 :188-196 (1993).

Keywords: 551.34 -- Geocryology. Frozen ground.
551.345.2 -- Permafrost, formation and decay.
519.673 -- Modelling.
551.58 -- Climatology.
E8 -- Glaciology: frost action and permafrost.
SPRI record no.: 126217

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245 10 ‡aEffect of temperature cycles on permafrost formation time /‡cVirgil J. Lunardini.
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300 ## ‡ap. 188-196 :‡bdiags., tables.
500 ## ‡aCRREL Special Report. Vol. 93-22 :188-196 (1993).
520 3# ‡aCalculations and examples indicate that growth of heterogenetic permafrost, with pure conduction heat transfer, is governed by transient surface temperature, geothermal heat flow and thermal properties of soil. Predicted times can be of order of geologic time scales because of very large sensible heat inherent in soil with geothermal gradient. When effect of cyclic warming and cooling is also considered, predicted formation times are significantly reduced. However, cyclic thermal modulation will only be effective for relatively shallow permafrost, since warming times are much shorter than cooling times.
650 07 ‡a551.34 -- Geocryology. Frozen ground.‡2udc
650 07 ‡a551.345.2 -- Permafrost, formation and decay.‡2udc
650 07 ‡a519.673 -- Modelling.‡2udc
650 07 ‡a551.58 -- Climatology.‡2udc
650 07 ‡aE8 -- Glaciology: frost action and permafrost.‡2local
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