Temporal differentiation of rainfall thresholds for debris flows in Wenchuan earthquake-affected areas
文献类型：期刊论文
| 作者 | Guo, Xiaojun1,2,3 ; Cui, Peng1,2,4; Li, Yong1,2; Fan, Jianglin5; Yan, Yan1,3; Ge, Yonggang1,2
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| 刊名 | ENVIRONMENTAL EARTH SCIENCES
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| 出版日期 | 2016 |
| 卷号 | 75期号:2页码:DOI:10.1007/s12665-015-5031-1 |
| 关键词 | Debris flows Rainfall intensity Event rainfall Loose material Wenchuan earthquake area |
| ISSN号 | 1866-6280 |
| 通讯作者 | Guo, Xiaojun |
| 英文摘要 | The 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. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 类目[WOS] | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 关键词[WOS] | CHI-CHI EARTHQUAKE ; SHALLOW LANDSLIDES ; DURATION CONTROL ; INITIATION ; INTENSITY ; COLORADO ; RUNOFF ; TAIWAN ; NEPAL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000370240800020 |
| 公开日期 | 2016-04-26 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/15114]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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