Speleothems Reveal 500,000-Year History of Siberian Permafrost

被引：95

作者：

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.

Kononov, A. M. ^{[2
]}

Henderson, G. M. ^{[1
]}

机构：

[1] Univ Oxford, Dept Earth Sci, Oxford OX1 3AN, England

[2] Russian Acad Sci, Siberian Branch, Inst Earths Crust, Irkutsk 664033, Russia

[3] Swiss Fed Inst Technol Zurich ETH Zurich, CH-8092 Zurich, Switzerland

[4] Mongolian Acad Sci, Inst Geog, Ulaanbaatar 210620, Mongolia

来源：

SCIENCE | 2013年 / 340卷 / 6129期

基金：

俄罗斯基础研究基金会;

关键词：

ISOTOPE STAGE 11; MILLENNIAL-SCALE; LAKE ELGYGYTGYN; CLIMATE-CHANGE; RECORD; VARIABILITY; BAIKAL; CARBON;

D O I：

10.1126/science.1228729

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Soils in permafrost regions contain twice as much carbon as the atmosphere, and permafrost has an important influence on the natural and built environment at high northern latitudes. The response of permafrost to warming climate is uncertain and occurs on time scales longer than those assessed by direct observation. We dated periods of speleothem growth in a north-south transect of caves in Siberia to reconstruct the history of permafrost in past climate states. Speleothem growth is restricted to full interglacial conditions in all studied caves. In the northernmost cave (at 60 degrees N), no growth has occurred since Marine Isotopic Stage (MIS) 11. Growth at that time indicates that global climates only slightly warmer than today are sufficient to thaw extensive regions of permafrost.

引用

页码：183 / 186

页数：4

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