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Debris flow hazard assessment using set pair analysis models: Take Beichuan county as an example

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Abstract

Assessment of debris flow hazards is important for developing measures to mitigate the loss of life and property and to minimize environmental damage. Two modified uncertainty models, Set Pair Analysis (SPA) and modified Set Pair Analysis (mSPA), were suggested to assess the regional debris flow hazard. A case study was conducted in seven towns of the Beichuan county, Sichuan Province, China, to test and compare the application of these two models in debris flow hazard assessment. The results showed that mSPA only can fit for value-variables, but not for non value-variable assessment indexes, Furthermore, as for a given assessment index xi, mSPA only considers two cases, namely, when grade value increases with xi and when grade value decreases with x i . Thus, mSPA can not be used for debris flow hazard assessment but SPA is credible for the assessment because there are no limitations when using SPA model to assess the debris flow hazard. Therefore, in this study SPA is proposed for assessing debris flow hazard.

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Authors and Affiliations

  1. State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu, 610065, China

    Feng-guang Yang, Yue Liang, Wen-sheng Wang, Xiao-quan Zhou, Xing-nian Liu, Shu-you Cao, Er Huang & Yan-hua Wu

  2. College of Water Resource & Hydropower, Sichuan University, Chengdu, 610065, China

    Feng-guang Yang, Wen-sheng Wang, Xiao-quan Zhou, Xing-nian Liu, Shu-you Cao, Er Huang & Yan-hua Wu

  3. Department of Biological and Agricultural Engineering, Texas A & M University, College Station, Texas, 77843-2117, USA

    Vijay P. Singh

Authors
  1. Feng-guang Yang
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  2. Yue Liang
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  3. Vijay P. Singh
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  4. Wen-sheng Wang
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  5. Xiao-quan Zhou
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  6. Xing-nian Liu
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  7. Shu-you Cao
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  8. Er Huang
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  9. Yan-hua Wu
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Correspondence to Xiao-quan Zhou.

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Yang, Fg., Liang, Y., Singh, V.P. et al. Debris flow hazard assessment using set pair analysis models: Take Beichuan county as an example. J. Mt. Sci. 11, 1015–1022 (2014). https://doi.org/10.1007/s11629-013-2495-x

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  • DOI: https://doi.org/10.1007/s11629-013-2495-x

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