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(Article of periodic en Anglais - 2014)

Document title

Cryostratigraphy and permafrost evolution in the lacustrine lowlands of West-Central Alaska

Authors(s) and Affiliation(s)

KANEVSKIY M. (1) ; JORGENSON T. (1 2) ; SHUR Y. (1) ; O'DONNELL J.A. (3) ; HARDEN J.W. (4) ; ZHUANG Q. (5) ; FORTIER D. (1 6) ;
(1) Inst. of Northern Engineering, Univ. of Alaska, Fairbanks, ETATS-UNIS
(2) Alaska Ecoscience, Fairbanks, ETATS-UNIS
(3) National Park, Alaska, Fairbanks, ETATS-UNIS
(4) US Geological Survey, Menlo Park, California, ETATS-UNIS
(5) Dept. of Earth, Atmospheric, and Planetary Science, and Dept of Agronomy Purdue Univ., Lafayette, ETATS-UNIS
(6) Dépt. de géographie, Univ. du Québec, Montréal, CANADA

Abstract

The cryostratigraphy and properties of perennially frozen sediments from 3 areas in the Koyukuk-Innoko region are described and interpreted in terms of permafrost history. A conceptual model of terrain evolution from the Late Pleistocene to the present day identifies 4 stages of yedoma degradation and 5 stages of subsequent permafrost aggradation-degradation. These stages can occur in differing places and times, creating a highly complex mosaic of terrain conditions, complicating predictions of landscape response to future climatic changes or human impact

Source

Article of periodic

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

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

Millesime : 2014, vol. 25, no1 [pp. 14-34]

Bibliographic references : 3 p.

Collation : 11 fig., 2 tabl.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/ppp.1800

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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