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Volume 23 Issue 3
Jun 2012
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Journal of Earth Science  > 2012  >  23(3): 373-380.
Fangqiang Wei, Hongjuan Yang, Kaiheng Hu, Sergey Chernomorets. Measuring Internal Velocity of Debris Flows by Temporally Correlated Shear Forces. Journal of Earth Science, 2012, 23(3): 373-380. doi: 10.1007/s12583-012-0258-1
Citation: Fangqiang Wei, Hongjuan Yang, Kaiheng Hu, Sergey Chernomorets. Measuring Internal Velocity of Debris Flows by Temporally Correlated Shear Forces. Journal of Earth Science, 2012, 23(3): 373-380. doi: 10.1007/s12583-012-0258-1
shu

Measuring Internal Velocity of Debris Flows by Temporally Correlated Shear Forces

doi: 10.1007/s12583-012-0258-1
  • 1.

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

  • 2.

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

  • 3.

    Faculty of Geography, Moscow State University, Moscow, Russia

Funds:

the National Natural Science Foundation of China  40771026

the NSFC-RFBR Project 40911120089

the NSFC-RFBR Project 08-05-92206 NSFCa

More Information
  • Corresponding author: Fangqiang Wei, fqwei@imde.ac.cn
  • Received Date: 21 Dec 2010
  • Accepted Date: 30 Apr 2011
  • Publish Date: 01 Jun 2012
    Abstract
  • Debris flow is a kind of geological hazard occurring in mountain areas. Its velocity is very important for debris flow dynamics research and designing debris flow control works. However,most of past researches focused on surface velocity and mean velocity of debris flow,while few researches involve its internal velocity because there is no available method for measuring the internal velocity for its destructive power. In this paper,a method of temporally correlated shear forces (TCSF) for measuring the internal velocity of debris flows is proposed. The principle of this method is to calculate the internal velocity of a debris flow using the distance between two detecting sections and the time difference between the two waveforms of shear forces measured at both sections. This measuring method has been tested in 14 lab-based flume experiments.

     

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