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Debris Flow Gully Classification and Susceptibility Assessment Model Construction

Author

Listed:
  • Deqiang Cheng

    (Key Research Institute of Yellow River Civilization and Sustainable Development and Collaborative Innovation Center on Yellow River Civilization Jointly Built by Henan Province and Ministry of Education, Henan University, Kaifeng 475001, China)

  • Javed Iqbal

    (Department of Earth Sciences, The University of Haripur, Haripur 22620, Pakistan)

  • Chunliu Gao

    (School of Cultural Industry & Tourism Management, Henan University, Kaifeng 475001, China)

Abstract

The location of debris flow occurring in a gully determines the observable differences in its formation, evolution and effects. In this piece of research, we propose a new method for debris flow gully classification based on the locations of the debris flows occurring in the gullies. It is termed the three-section method (TSM). It includes eight different types of gullies with different digital identifications (IDs) and susceptibility degrees (SDs). By taking the Jiangjia Gully (JJG), in Yunnan, China, as a case study site, the main gully and the sub-gullies at different levels were identified using a hydrological analysis method. Then, the gullies were divided into different types using the new classification TSM. The results show that there are seven different types of debris flow gullies in the JJG. The number of different types varied greatly in gullies at different levels. In particular, the topological diagram of debris flow gullies was drawn after simplifying the shape of the gullies, and it was a good way to understand the characteristics of debris flow gullies. Finally, the relationships were explored between the hypsometric integrals (HIs), surface exposures (SEs) and susceptibility degrees (SDs), and a new calculation model construction method for determining the degree of debris flow susceptibility was proposed. This model, using the above method, can not only be used to calculate the SDs of debris flows in the gullies, but can also be instrumental in pointing out the approximate locations of the debris flow commonly and easily occurring in the gullies. We hope that our research can provide a new concept for the assessment of debris flow susceptibility.

Suggested Citation

  • Deqiang Cheng & Javed Iqbal & Chunliu Gao, 2023. "Debris Flow Gully Classification and Susceptibility Assessment Model Construction," Land, MDPI, vol. 12(3), pages 1-20, February.
    • Handle: RePEc:gam:jlands:v:12:y:2023:i:3:p:571-:d:1081351
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    References listed on IDEAS

    as
    1. Chen Cao & Peihua Xu & Jianping Chen & Lianjing Zheng & Cencen Niu, 2016. "Hazard Assessment of Debris-Flow along the Baicha River in Heshigten Banner, Inner Mongolia, China," IJERPH, MDPI, vol. 14(1), pages 1-19, December.
    2. Wen Zhang & Hui-Zhong Li & Jian-ping Chen & Chen Zhang & Li-ming Xu & Wei-feng Sang, 2011. "Comprehensive hazard assessment and protection of debris flows along Jinsha River close to the Wudongde dam site in China," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 58(1), pages 459-477, July.
    3. Deqiang Cheng & Chunliu Gao & Tiantian Shao & Javed Iqbal, 2020. "A Landscape Study of Sichuan University (Wangjiang Campus) from the Perspective of Campus Tourism," Land, MDPI, vol. 9(12), pages 1-21, December.
    4. G. Chevalier & V. Medina & M. Hürlimann & A. Bateman, 2013. "Debris-flow susceptibility analysis using fluvio-morphological parameters and data mining: application to the Central-Eastern Pyrenees," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 67(2), pages 213-238, June.
    5. Omvir Singh & A. Sarangi & Milap Sharma, 2008. "Hypsometric Integral Estimation Methods and its Relevance on Erosion Status of North-Western Lesser Himalayan Watersheds," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 22(11), pages 1545-1560, November.
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