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(Article of periodic en Anglais - 2011)

Document title

Biogeochemical and geocryological characteristics of wedge and thermokarst-cave ice in the CRREL permafrost tunnel, Alaska

Authors(s) and Affiliation(s)

DOUGLAS T.A. (1) ; FORTIER D. (2) ; SHUR Y.L. (3) ; KANEVSKIY M.Z. (2) ; GUO L. (4) ; CAI Y. (5) ; BRAY M.T. (3) ;
(1) Cold Regions Research and Engineering, Alaska, Fort Wainwright, ETATS-UNIS
(2) Inst. of Northern Engineering, Univ. of Alaska, Fairbanks, ETATS-UNIS
(3) Dep. of Civil and Environmental Engineering, Univ. of Alaska, Fairbanks, ETATS-UNIS
(4) Univ. of Southern Mississippi, Dep. of Marine Science, Stennis Space Center, Mississippi, ETATS-UNIS
(5) Univ. College of Oceanography and Environmental Science, Fujian, Xiamen, CHINE

Abstract

Partially eroded ice wedges and lenticularly shaped bodies of massive thermokarst-cave ice in ice-rich syngenetic permafrost (yedoma) are exposed in the CRREL tunnel near Fairbanks, Alaska. Here, the AA. report the biogeochemical characteristics of one of these thermokarst-cave ice features and four nearby ice wedges. Based on these results they present a schematic model to describe how the thermokarst-cave ice was formed and preserved and what processes led to its current biogeochemical characteristics. Current estimates of soluble solutes stored in permafrost may underestimate the total carbon and nutrient load where wedge material has been extensively replaced by surface water rich in organic carbon, nutrients or inorganic solutes

Source

Article of periodic

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

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

Millesime : 2011, vol. 22, no2 [pp. 120-128]

Bibliographic references : 40 ref.

Collation : 4 fig., 1 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.709

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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