Speleothems reveal 500,000-year history of Siberian permafrost.

@article{Vaks2013SpeleothemsR5,
  title={Speleothems reveal 500,000-year history of Siberian permafrost.},
  author={A. Vaks and O. S. Gutareva and Sebastian F. M. Breitenbach and E Avirmed and Andrew J Mason and Alex L. Thomas and A. V. Osinzev and Alexander Kononov and Gideon M. Henderson},
  journal={Science},
  year={2013},
  volume={340 6129},
  pages={183-6}
}
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… CONTINUE READING
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