Journal of Mountain Science

, Volume 2, Issue 2, pp 155–163 | Cite as

Debris flow dam formation in Southeast Tibet

  • Cheng Zunlan Email author
  • Wu Jishan 
  • Geng Xueyong 


Glaciers with their deposits abound in the alpine areas of Southeast Tibet. Large debris flows occur frequently from these deposits and form dams that block streams. In this paper, 3 events of large debris flows reported in Peilong Valley located in Southeast Tibet, and which resulted 2 blocking dams resulted, are discussed in details, focusing on the major factors controlling dam formation. The results shows that the first surge group caused by snow and ice avalanches, ice-lake breaks, and large-scale landslides, with a high peak discharge and high velocity, and an abundance of boulders, are most likely to form blocking dams.

Key words

Southeast Tibet debris-flow dam dam formation 


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Copyright information

© Institute of Moutain Hazards and Environment, Chinese Academy of Sciences and Science Press 2005

Authors and Affiliations

  1. 1.Institute of Mountain Hazards and EnvironmentChinese Academy of Sciences & Ministry of Water ConservancyChengduChina

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