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A Hydrologically Based Model for Delineating Hazard Zones in the Valleys of Debris Flow Basins
Hu, Kaiheng1,2; Li, Pu1,2,3; You, Yong1,2; Su, Fenghuan1,2
Corresponding AuthorHu, Kaiheng
2016-01-19
Source PublicationNat. Hazards Earth Syst.
ISSN1561-8633
Pages1-17
Abstract

A hydrologically based model is developed for delineating hazard zones in valleys of debris flow basins. The basic assumption of this model is that the ratio of peak discharges of any two cross sections in a debris-flow basin is a power function of the ratio of their flow accumulation areas. Combining the advantages of the empirical and flow routing models of debris-flow hazard zoning, this hydrological model with minimal data requirements has the ability to produce hazard 15 intensity values at different event magnitudes. The algorithms used in this model are designed in the framework of gridbased geographic processing and implemented completely on ArcGIS platform and a Python scripting environment. Qipan basin in the Wenchuan county of Sichuan province, southwest China where a large-scale debris-flow event occurred on July 11, 2013 was chosen as the test case for the model. The hazard zone identified by the model showed good agreement with the real inundation area of the event. The proposed method can help identify small hazard areas in upstream tributaries and 20 the developed model is promising in terms of its application in debris-flow hazard zoning.

KeywordDebris Flow Hydrologically Based Model Hazard Zones
Indexed BySCI
Language英语
Quartile3区
TOP
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/18144
Collection山地灾害与地表过程重点实验室
Affiliation1.Key Laboratory of Mountain Hazards and Earth Surface Processes, Chinese Academy of Sciences, Chengdu 5 610041, China
2.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences & Ministry of Water Conservancy,Chengdu 610041, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Hu, Kaiheng,Li, Pu,You, Yong,et al. A Hydrologically Based Model for Delineating Hazard Zones in the Valleys of Debris Flow Basins[J]. Nat. Hazards Earth Syst.,2016:1-17.
APA Hu, Kaiheng,Li, Pu,You, Yong,&Su, Fenghuan.(2016).A Hydrologically Based Model for Delineating Hazard Zones in the Valleys of Debris Flow Basins.Nat. Hazards Earth Syst.,1-17.
MLA Hu, Kaiheng,et al."A Hydrologically Based Model for Delineating Hazard Zones in the Valleys of Debris Flow Basins".Nat. Hazards Earth Syst. (2016):1-17.
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