Speleothems Reveal 500,000-Year History of Siberian Permafrost

Author:

Vaks A.1,Gutareva O. S.2,Breitenbach S. F. M.3,Avirmed E.4,Mason A. J.1,Thomas A. L.1,Osinzev A. V.5,Kononov A. M.2,Henderson G. M.1

Affiliation:

1. Department of Earth Sciences, University of Oxford, Oxford OX1 3AN, UK.

2. Institute of Earth’s Crust, Russian Academy of Sciences, Siberian Branch, 128 Lermontova Street, Irkutsk 664033, Russia.

3. Swiss Federal Institute of Technology Zürich (ETH Zürich), CH-8092 Zürich, Switzerland.

4. Institute of Geography, Mongolian Academy of Sciences, 210620 UlaanBaatar, Mongolia.

5. Arabica Speleological Club, Mamin-Sibiryak Street, Box 350, Irkutsk 554082, Russia.

Abstract

Permafrost Thaw Predictions Permafrost contains twice as much carbon as the atmosphere which could have serious consequences if it were to be released by widespread thawing. Vaks et al. (p. 183 , published online 21 February) present a 450,000 year-long record of speleothem growth at selected locations in Siberia, which traces changes in the extent of permafrost over that time period. The authors conclude that conditions only slightly warmer than those of today would cause widespread thawing of continuous permafrost as far north as 60°N.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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