Debris flow susceptibility and hazard assessment in Fushun based on hydrological response units

Shanjun Liu, Shiyao Liu, Donglin Lv, Lianhuan Wei (), Meng Ao, Xingyu Pan, Bing Li, Yuan Cui, Lun Wang and Xin He
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Shanjun Liu: Northeastern University
Shiyao Liu: Northeastern University
Donglin Lv: Liaoning Geology and Mineral Resources Group Energy Geology Co., Ltd
Lianhuan Wei: Northeastern University
Meng Ao: Northeastern University
Xingyu Pan: Northeastern University
Bing Li: Liaoning 10th Geological Brigade Co., Ltd
Yuan Cui: Liaoning 10th Geological Brigade Co., Ltd
Lun Wang: Liaoning 10th Geological Brigade Co., Ltd
Xin He: Liaoning 10th Geological Brigade Co., Ltd

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2024, vol. 120, issue 9, No 24, 8667-8693

Abstract: Abstract Fushun, located in Northeast China, is prone to debris flow disasters due to its complex topographical and geological conditions. In 2013, large-scale debris flow disasters triggered by a rainstorm broke out, causing hundreds of casualties and serious economic losses. Therefore, it is significant to evaluate the susceptibility and hazard of debris flows in Fushun. Instead of adopting grid units, this research adopts the hydrological response units as the evaluation units and conducts debris flow susceptibility assessment for Fushun area with analytical hierarchical process. By combining the susceptibility with two different precipitation data, hazard assessment is further conducted. Comparison between the two hazard maps is conducted to explore the influence of precipitation on debris flow hazard assessment. Under different precipitation conditions, the debris flow hazard of the same area changes. Statistics on the accuracy of the susceptibility and hazard assessment results is conducted and further compared with the local existing debris flow disaster records, demonstrating that the evaluation results are generally in good consistency with the actual situation in Fushun.

Keywords: Debris flow; Hydrological response unit (HRU); Analytical hierarchical process (AHP); Susceptibility assessment; Hazard assessment (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s11069-024-06544-x

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