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Journal of Mountain Science

, Volume 5, Issue 3, pp 189–193 | Cite as

Outburst risk of barrier lakes in Sichuan, China

  • Genwei Cheng
  • Xiaodan Wang
  • Xiubin He
  • Jihui Fan
  • Jianrong Fan
Article

Abstract

34 barrier lakes induced by earthquake have been formed by wedged debris on the river channels after a massive earthquake happening on May 12 in Sichuan, China. Among them, the Tangjiashan Barrier Lake is the largest one. It faces very urgent risk of dam breaking when water level reaches the top and begins overflow in case of storm rainfalls and continually aftershocks, threatening already devastated cities and villages with about 1.5 million people downstream. The outburst of a similar barrier lake occurred in the Minjiang River in 1933, causing a catastrophic flood. Risk analysis indicates that not all barrier lakes are highly dangerous. Only those lakes with very high dams and water to be filled up in short period need to be dealt with immediately.

Keywords

Earthquake Barrier Lake risk estimation aftershock Sichuan China 

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References

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Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH 2008

Authors and Affiliations

  • Genwei Cheng
    • 1
  • Xiaodan Wang
    • 1
  • Xiubin He
    • 1
  • Jihui Fan
    • 1
  • Jianrong Fan
    • 1
  1. 1.Institute of Mountain Hazards and EnvironmentCASChengduChina

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