IMHE OpenIR  > 山地灾害与地表过程重点实验室
Rainfall threshold calculation for debris flow early warning in areas with scarcity of data
Pan, Hua-Li1,2; Jiang, Yuan-Jun1,2; Wang, Jun3; Ou, Guo-Qiang1,2
2018-05-17
Source PublicationNATURAL HAZARDS AND EARTH SYSTEM SCIENCES
ISSN1561-8633
Volume18Issue:5Pages:1395-1409
Abstract

Debris flows are natural disasters that frequently occur in mountainous areas, usually accompanied by serious loss of lives and properties. One of the most commonly used approaches to mitigate the risk associated with debris flows is the implementation of early warning systems based on well-calibrated rainfall thresholds. However, many mountainous areas have little data regarding rainfall and hazards, especially in debris-flow-forming regions. Therefore, the traditional statistical analysis method that determines the empirical relationship between rainstorms and debris flow events cannot be effectively used to calculate reliable rainfall thresholds in these areas. After the severe Wenchuan earthquake, there were plenty of deposits deposited in the gullies, which resulted in several debris flow events. The triggering rainfall threshold has decreased obviously. To get a reliable and accurate rainfall threshold and improve the accuracy of debris flow early warning, this paper developed a quantitative method, which is suitable for debris flow triggering mechanisms in meizoseismal areas, to identify rainfall threshold for debris flow early warning in areas with a scarcity of data based on the initiation mechanism of hydraulic-driven debris flow. First, we studied the characteristics of the study area, including meteorology, hydrology, topography and physical characteristics of the loose solid materials. Then, the rainfall threshold was calculated by the initiation mechanism of the hydraulic debris flow. The comparison with other models and with alternate configurations demonstrates that the proposed rainfall threshold curve is a function of the antecedent precipitation index (API) and 1 h rainfall. To test the proposed method, we selected the Guojuanyan gully, a typical debris flow valley that during the 2008-2013 period experienced several debris flow events, located in the meizoseismal areas of the Wenchuan earthquake, as a case study. The comparison with other threshold models and configurations shows that the selected approach is the most promising starting point for further studies on debris flow early warning systems in areas with a scarcity of data.

KeywordDebris Flow Rainfall Threshold Curve Critical Rainfall
DOI10.5194/nhess-18-1395-2018
Indexed BySCI
WOS KeywordIntensity-duration Thresholds ; Induced Shallow Landslides ; 13 August 2010 ; Wenchuan Earthquake ; Southern California ; Shikoku Island ; Initiation ; China ; Model ; Patterns
Language英语
Quartile3区
Funding ProjectCRSRI Open Research Program[CKWV2015229/KY] ; CAS Pioneer Hundred Talents Program ; 135 Strategic Program of the Institute of Mountain Hazards and Environment, CAS[SDS-135-1701] ; National Nature Science Foundation of China[51679229] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2018405]
WOS Research AreaGeology ; Meteorology & Atmospheric Sciences ; Water Resources
WOS SubjectGeosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS IDWOS:000432457400003
Funding OrganizationCRSRI Open Research Program ; CAS Pioneer Hundred Talents Program ; 135 Strategic Program of the Institute of Mountain Hazards and Environment, CAS ; National Nature Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
PublisherCOPERNICUS GESELLSCHAFT MBH
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/23014
Collection山地灾害与地表过程重点实验室
Corresponding AuthorJiang, Yuan-Jun
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
3.Guangzhou Inst Geog, Guangzhou 510070, Guangdong, 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
Corresponding 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
Pan, Hua-Li,Jiang, Yuan-Jun,Wang, Jun,et al. Rainfall threshold calculation for debris flow early warning in areas with scarcity of data[J]. NATURAL HAZARDS AND EARTH SYSTEM SCIENCES,2018,18(5):1395-1409.
APA Pan, Hua-Li,Jiang, Yuan-Jun,Wang, Jun,&Ou, Guo-Qiang.(2018).Rainfall threshold calculation for debris flow early warning in areas with scarcity of data.NATURAL HAZARDS AND EARTH SYSTEM SCIENCES,18(5),1395-1409.
MLA Pan, Hua-Li,et al."Rainfall threshold calculation for debris flow early warning in areas with scarcity of data".NATURAL HAZARDS AND EARTH SYSTEM SCIENCES 18.5(2018):1395-1409.
Files in This Item:
File Name/Size DocType Version Access License
Rainfall threshold c(5636KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Pan, Hua-Li]'s Articles
[Jiang, Yuan-Jun]'s Articles
[Wang, Jun]'s Articles
Baidu academic
Similar articles in Baidu academic
[Pan, Hua-Li]'s Articles
[Jiang, Yuan-Jun]'s Articles
[Wang, Jun]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Pan, Hua-Li]'s Articles
[Jiang, Yuan-Jun]'s Articles
[Wang, Jun]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Rainfall threshold calculation for debris flow early warning in areas with scarcity of data.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.