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Numeric simulation of permafrost degradation in the eastern Tibetan Plateau

Author

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  • Dongqing Li
  • Jin Chen
  • Qingzhou Meng
  • Dengke Liu
  • Jianhong Fang
  • Jiankun Liu

Abstract

Rates of permafrost degradation at both the permafrost table and the base of permafrost were simulated using a prescribed rate of increase in mean annual air temperatures of 0.04°C/a for a site in continuous permafrost near Changshitou Mountain, eastern Tibetan Plateau. The results indicate that over 110 years, the permafrost table descends from a depth of 1.20 m to 1.48 m, and that the base of permafrost rises from the initial value of 55.0 m to 15.2 m. The predicted rate of basal permafrost degradation in low moisture content bedrock reaches a peak of 0.58 m/a after 60 years, assuming a constant thermal gradient at the base of 0.018°C/m. The permafrost is persistent due to the ice‐rich nature of the near‐surface soil layers. Copyright © 2008 John Wiley & Sons, Ltd.

Suggested Citation

  • Dongqing Li & Jin Chen & Qingzhou Meng & Dengke Liu & Jianhong Fang & Jiankun Liu, 2008. "Numeric simulation of permafrost degradation in the eastern Tibetan Plateau," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 19(1), pages 93-99, January.
    • Handle: RePEc:wly:perpro:v:19:y:2008:i:1:p:93-99
    DOI: 10.1002/ppp.611
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    Cited by:

    1. Shuangjie Wang & Fujun Niu & Jianbing Chen & Yuanhong Dong, 2020. "Permafrost research in China related to express highway construction," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 31(3), pages 406-416, July.

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