Ancient Permafrost and a Future, Warmer Arctic-Reference-Cited by-同舟云学术

Ancient Permafrost and a Future, Warmer Arctic

Published:2008-09-19 Issue:5896 Volume:321 Page:1648-1648
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Froese Duane G.¹²³,Westgate John A.¹²³,Reyes Alberto V.¹²³,Enkin Randolph J.¹²³,Preece Shari J.¹²³

Affiliation:

1. Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, AB T5M 0M3, Canada.

2. Department of Geology, University of Toronto, Toronto, ON M5S 3B1, Canada.

3. Geological Survey of Canada–Pacific, Sidney, BC V8L 4B2, Canada.

Abstract

Climate models predict extensive and severe degradation of permafrost in response to global warming, with a potential for release of large volumes of stored carbon. However, the accuracy of these models is difficult to evaluate because little is known of the history of permafrost and its response to past warm intervals of climate. We report the presence of relict ground ice in subarctic Canada that is greater than 700,000 years old, with the implication that ground ice in this area has survived past interglaciations that were warmer and of longer duration than the present interglaciation.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference8 articles.

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3. Permafrost and the Global Carbon Budget

4. J. Overpecket al., Eos86, 312 (2005).

5. Details available as supporting online material on Science Online.

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