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Characteristic rainfall for warning of debris flows
Hu Kaiheng1,2,3; Cui Peng1,2,3; Wang Chuanchang1,2,3; Li Yong1,2,3; Lu Xiaobing4
Corresponding AuthorHu, KH
AbstractA characteristic rainfall is introduced to overcome the difficulties encountered in determining a critical rainfall value for triggering debris flow. The characteristic value is defined as the rainfall at which debris-flow occurrence probability shows a rapid increase, and can be used as a warning rainfall threshold for debris flows. Investigation of recorded debris flows and 24-hour rainfall data at Jiangjia basin, Yunnan Province, in southwestern China, demonstrates the existence of such a characteristic rainfall. It was found that the characteristic rainfall corresponds to the daily rainfall of 90% cumulative probability by analyzing the basin's daily rainfall histogram. The result provides a simple and useful method for estimating a debris-flow warning rainfall threshold from the daily rainfall distribution. It was applied to estimate the debris-flow warning rainfall threshold for the Subaohe basin, a watershed in the 2008 Wenchuan earthquake zone with many physical characteristics similar to those of the Jiangjia basin.
KeywordDebris Flow Wenchuan Earthquake Warning Rainfall Threshold Statistics Of Daily Rainfall Distribution
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS SubjectEnvironmental Sciences
WOS IDWOS:000280555900001
Funding OrganizationNational Program on Key Basic Research Project (973 Program)(2008CB425802) ; Chinese Academy of Sciences(KZCX2-YW-302) ; National Natural Science Foundation of China(40701014)
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Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
3.Minist Water Conservancy & Power, Chengdu 610041, Peoples R China
4.Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R 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,Cui Peng,Wang Chuanchang,et al. Characteristic rainfall for warning of debris flows[J]. JOURNAL OF MOUNTAIN SCIENCE,2010,7(3):207-214.
APA Hu Kaiheng,Cui Peng,Wang Chuanchang,Li Yong,&Lu Xiaobing.(2010).Characteristic rainfall for warning of debris flows.JOURNAL OF MOUNTAIN SCIENCE,7(3),207-214.
MLA Hu Kaiheng,et al."Characteristic rainfall for warning of debris flows".JOURNAL OF MOUNTAIN SCIENCE 7.3(2010):207-214.
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