Journal of Mountain Science

, Volume 14, Issue 7, pp 1279–1291 | Cite as

Debris flows monitoring and localization using infrasonic signals

  • Xiao-peng Leng
  • Dun-long Liu
  • Fang-qiang Wei
  • Yong Hong
  • De-fu Dai
Article
  • 55 Downloads

Abstract

Infrasonic waves (frequency ≤ 20 Hz) are generated during the formation and movement of debris flows, traveling in air with a speed far higher than that of the debris-flow movement. Infrasound monitoring and localization of infrasonic waves can serve as warning properties for debris-flows. Based on the characteristics of infrasonic signals, this study presents a three-point array of infrasound sensors as time-synchronous multiple sensors for acquiring signals. In the meantime, the signals are sorted by mutual correlation of signals to figure out their latency, and by means of array coordinating to locate the sound source to realize the monitoring and positioning of a debris-flows hazard. The method has been in situ tested and has been proven to be accurate in monitoring debris-flow occurrences and determining their positions, which is particularly effective for pre-event warning of debris-flow hazards.

Keywords

Debris flow Infrasound Debris flow monitoring Localization 

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Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany 2017

Authors and Affiliations

  • Xiao-peng Leng
    • 1
    • 2
    • 3
  • Dun-long Liu
    • 4
  • Fang-qiang Wei
    • 2
  • Yong Hong
    • 2
  • De-fu Dai
    • 5
  1. 1.Key Laboratory of Mountain Hazards and Earth Surface ProcessChinese Academy of SciencesChengduChina
  2. 2.Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengduChina
  3. 3.College of Information Science and TechnologyChengdu University of TechnologyChengduChina
  4. 4.College of Software EngineeringChengdu University of Information and TechnologyChengduChina
  5. 5.Kunming Dongchuan Debris Flow Prevention and Control InstituteKunmingChina

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