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Volume 24 Issue 5
Oct 2013
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Journal of Earth Science  > 2013  >  24(5): 854-862.
Huali Pan, Jiangcheng Huang, Ren Wang, Guoqiang Ou. Rainfall Threshold Calculation Method for Debris Flow Pre-Warning in Data-Poor Areas. Journal of Earth Science, 2013, 24(5): 854-862. doi: 10.1007/s12583-013-0377-3
Citation: Huali Pan, Jiangcheng Huang, Ren Wang, Guoqiang Ou. Rainfall Threshold Calculation Method for Debris Flow Pre-Warning in Data-Poor Areas. Journal of Earth Science, 2013, 24(5): 854-862. doi: 10.1007/s12583-013-0377-3
shu

Rainfall Threshold Calculation Method for Debris Flow Pre-Warning in Data-Poor Areas

doi: 10.1007/s12583-013-0377-3
  • 1.

    Key Laboratory of Mountain Hazards and Surface Progress, Chinese Academy of Sciences, Chengdu, 610041, China

  • 2.

    Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China

  • 3.

    Asian International Rivers Center, Yunnan University, Kunming, 650091, China

  • 4.

    State Key Laboratory of Geomechanics and Geotechnical Engineering, Wuhan, 430071, China

  • 5.

    Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, China

Funds:

the National Natural Science Foundation of China 40830742

the National Natural Science Foundation of China 40901007

More Information
  • Corresponding author: Guoqiang Ou, ougq@imde.ac.cn
  • Received Date: 20 Sep 2012
  • Accepted Date: 09 Nov 2012
  • Publish Date: 01 Oct 2013
    Abstract
  • Debris flows are the one type of natural disaster that is most closely associated with human activities. Debris flows are characterized as being widely distributed and frequently activated. Rainfall is an important component of debris flows and is the most active factor when debris flows occur. Rainfall also determines the temporal and spatial distribution characteristics of the hazards. A reasonable rainfall threshold target is essential to ensuring the accuracy of debris flow pre-warning. Such a threshold is important for the study of the mechanisms of debris flow formation, predicting the characteristics of future activities and the design of prevention and engineering control measures. Most mountainous areas have little data regarding rainfall and hazards, especially in debris flow forming regions. Therefore, both the traditional demonstration method and frequency calculated method cannot satisfy the debris flow pre-warning requirements. This study presents the characteristics of pre-warning regions, included the rainfall, hydrologic and topographic conditions. An analogous area with abundant data and the same conditions as the pre-warning region was selected, and the rainfall threshold was calculated by proxy. This method resolved the problem of debris flow pre-warning in areas lacking data and provided a new approach for debris flow pre-warning in mountainous areas.

     

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    • References(12)
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