IMHE OpenIR  > 山地灾害与地表过程重点实验室
Temporal differentiation of rainfall thresholds for debris flows in Wenchuan earthquake-affected areas
Guo, Xiaojun1,2,3; Cui, Peng1,2,4; Li, Yong1,2; Fan, Jianglin5; Yan, Yan1,3; Ge, Yonggang1,2
Corresponding AuthorGuo, Xiaojun
2016
Source PublicationENVIRONMENTAL EARTH SCIENCES
ISSN1866-6280
EISSN1866-6299
Volume75Issue:2Pages:DOI:10.1007/s12665-015-5031-1
SubtypeArticle
AbstractThe Ms 8.0 Wenchuan earthquake greatly altered the threshold for rainfall-triggered debris flows in the affected areas. It is of both scientific and practical significance to determine the rainfall thresholds. This study examines one of the regions most prone to debris flows to analyze the characteristics of rainfall that caused debris flows, and to explore local rainfall thresholds. We applied the relation between rainfall intensity and duration, peak intensity and event amount, and other single factor approaches. Comparison of effectiveness and accuracy indicates that the event rainfall is the most sensitive factor for forecasting. Analysis of the annual rainfall thresholds showed that the rainfall conditions required for debris flows have increased on the continent during the past 6 years. Besides the rainfall fluctuations over the past few years, material changes were the primary reason for threshold variability. Recovery of vegetation plays an important role in reducing potential loose material that supplies volume for debris flows. Natural solidification, decrease of the potential erosion depth, and surface coarsening make it more difficult to initiate a debris flow, and ultimately increased rainfall conditions required. The change in rainfall thresholds can be predicted and verified for the entire earthquake-affected region.
KeywordDebris Flows Rainfall Intensity Event Rainfall Loose Material Wenchuan Earthquake Area
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1007/s12665-015-5031-1
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Geology ; Water Resources
Indexed BySCI
WOS KeywordCHI-CHI EARTHQUAKE ; SHALLOW LANDSLIDES ; DURATION CONTROL ; INITIATION ; INTENSITY ; COLORADO ; RUNOFF ; TAIWAN ; NEPAL
Language英语
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000370240800020
Funding OrganizationChinese Academy of Sciences(KZZD-EW-05-01) ; National Natural Science Foundation(41301008) ; National Key Technologies R&D Program of China(2012BAK10B04)
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/15114
Collection山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
2.Asian Network Debris Flow, Chengdu 610041, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
5.Sichuan Prov Meteorol Observ, Chengdu 610072, 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
Guo, Xiaojun,Cui, Peng,Li, Yong,et al. Temporal differentiation of rainfall thresholds for debris flows in Wenchuan earthquake-affected areas[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(2):DOI:10.1007/s12665-015-5031-1.
APA Guo, Xiaojun,Cui, Peng,Li, Yong,Fan, Jianglin,Yan, Yan,&Ge, Yonggang.(2016).Temporal differentiation of rainfall thresholds for debris flows in Wenchuan earthquake-affected areas.ENVIRONMENTAL EARTH SCIENCES,75(2),DOI:10.1007/s12665-015-5031-1.
MLA Guo, Xiaojun,et al."Temporal differentiation of rainfall thresholds for debris flows in Wenchuan earthquake-affected areas".ENVIRONMENTAL EARTH SCIENCES 75.2(2016):DOI:10.1007/s12665-015-5031-1.
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