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(Article of periodic en Anglais - 2012)

Document title

Thermal regime of a cold air trap in central Pennsylvania, USA : the Trough Creek ice mine

Authors(s) and Affiliation(s)

EDENBORN H.M. (1) ; SAMS J.I. (1) ; KITE J.S. (2) ;
(1) National Energy Technology Lab., US Dept. of Energy, Pennsylvania, Pittsburg, ETATS-UNIS
(2) Dept. of Geology and Geography, West Virginia University, Morgantown, ETATS-UNIS

Abstract

Air temperatures internal and external to a talus cave ("ice mine") in central Pennsylvania were measured hourly for 3 years. Despite its location near the base of a talus slope, the cave demonstrated the thermal characteristics of an apparently static cave, with limited connections to the external environment other than through the cave entrance. Congelation ice that lasted until late spring formed as drip or flowstone and ponded ice from the limited influx of infiltrating water during late winter/early spring. A closed period of thermal stratification and slow warming of cave air was followed by an open period in winter months during which the cave was cooled by the influx of cold dry air. Unlike the occasionally strong and localised cooling induced by the flow of cold air from vents at the base of talus slopes, static cold traps retain their cold air and have little apparent effect on surrounding biota, instead providing potential refugia for organisms that prefer colder temperatures

Source

Article of periodic

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

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

Millesime : 2012, vol. 23, no3 [pp. 187-195]

Bibliographic references : 1 p.

Collation : 5 fig., 1 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.1742

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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