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Probability distribution of measured debris-flow velocity in Jiangjia Gully, Yunnan Province, China
Li Yong1,2,3; Liu Jingjing1,2,3,4,5; Hu Kaiheng1,2,3; Su Pengcheng1,2,3,5
Corresponding AuthorLiu Jingjing
2012
Source PublicationNATURAL HAZARDS
ISSN0921-030X
EISSN1573-0840
Volume60Issue:2Pages:689-701
SubtypeArticle
AbstractDebris flow moves in the form of surge waves and consists of dozens or even hundreds of surges that are separated in time and space and have a variety of appearances, as exemplified in Jiangjia Gully, China. Observations there indicate that the deposit is made up by superposition of successive surges and deposit of a single surge is in effect a "frozen" surge. Then the study of debris flow is reduced to the study of surge sequence, which leads to a probabilistic picture of debris flow. This study attempts to find the probability distribution of velocity of surge using a huge data set of Jiangjia Gully. Statistics of the data shows that the velocity satisfies the Weibull distribution, which is believed to be universally valid because the distribution parameters vary little between events, with the shape parameter being well related to the average of velocity. It follows that the same distribution applies also to other quantities of debris flow, such as the flow depth and the discharge. Therefore, the distribution can be used to assess the magnitude and overflow range of a potential debris flow, as well as to the parameter calculation for engineering design.
KeywordDebris Flow Surge Velocity Weibull Distribution Jiangjia Gully
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s11069-011-0033-0
WOS Subject ExtendedGeology ; Meteorology & Atmospheric Sciences ; Water Resources
Indexed BySCI
WOS KeywordDEPOSITS ; FAN ; CALIFORNIA ; MORPHOLOGY ; MUDFLOW ; VALLEY ; KOREA
Language英语
Quartile4区
TOP
WOS SubjectGeosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS IDWOS:000298330300026
Funding OrganizationNational Program on Key Basic Research Project (973 Program)(2011CB409902) ; Chinese Academy of Sciences(KZCX2-YW-Q03-5-2) ; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection(SKLGP2010K003)
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Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/9928
Collection山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & 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.State Key Lab Geohazard Prevent, Chengdu 610059, Peoples R China
5.Chinese Acad Sci, Grad Univ, Beijing 100039, 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
Li Yong,Liu Jingjing,Hu Kaiheng,et al. Probability distribution of measured debris-flow velocity in Jiangjia Gully, Yunnan Province, China[J]. NATURAL HAZARDS,2012,60(2):689-701.
APA Li Yong,Liu Jingjing,Hu Kaiheng,&Su Pengcheng.(2012).Probability distribution of measured debris-flow velocity in Jiangjia Gully, Yunnan Province, China.NATURAL HAZARDS,60(2),689-701.
MLA Li Yong,et al."Probability distribution of measured debris-flow velocity in Jiangjia Gully, Yunnan Province, China".NATURAL HAZARDS 60.2(2012):689-701.
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