A physics-based model to derive rainfall intensity-duration threshold for debris flow
文献类型：期刊论文
| 作者 | Zhang SJ(张少杰)1 ; Xu, C.X.5; Wei, F.Q.4; Hu, K.H.1; Xu, H.3; Zhao,L.Q.2; Zhang, G.P.2
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| 刊名 | Geomorphology
 |
| 出版日期 | 2020 |
| 卷号 | 351页码:106931 |
| 关键词 | Debris Flow I-d Threshold Water-soil Mixture Density |
| ISSN号 | 0169-555X |
| DOI | 10.1016/j.geomorph.2019.106930 |
| 产权排序 | 1 |
| 通讯作者 | Wei, F. Q.(fqwei@imde.ac.cn) ; Hu, K. H.(khhu@imde.ac.cn) |
| 英文摘要 | A statistical method to establish an intensity-duration curve (I-D curve) for debris flows is highly dependent on a large amount of debris flows and rainfall events and is impossible for a gully lacking observation data. To overcome this limitation, a physics-based model to derive the I-D curve is presented. In this new model, the density of the debris flow is chosen as the key parameter, based on which, the rainfall intensity and duration necessary for fitting I-D curve are obtained. The physical model is validated in Jiangjia Gully, a typical debris flow valley with several debris flows each year. A series of I-D curves under the conditions of different antecedent rainfalls were fitted. These derived curves are similar to the shape of the curve from the statistical method, but having upper and lower boundary lines related to the necessary conditions for the occurrence of debris flows. The precision of the new model is identified as about 80.5% using 63 collected rainfalls in Jiangjia Gully in Yunan province, China. This value is 27.7% higher than the curve fitted through the statistical method. This new physical model is capable of improving the deficiency of the statistical method and has great application potential for predicting debris flows. |
| 电子版国际标准刊号 | 1872-695X |
| WOS关键词 | SHALLOW LANDSLIDES ; TRIGGERING RAINFALL ; JIANGJIA RAVINE ; IMPACT FORCE ; IDENTIFICATION ; MOBILIZATION ; DERIVATION ; INITIATION ; SYSTEM ; FLOODS |
| 资助项目 | National Key Research and Development Program of China[2018YFC1505503] ; Research and Demonstration Program of Precise Warning and Emergence Disposal Technologies against geo-hazards in Jiuzhaigou scenic area[KJ-2018-23] ; Natural Science Foundation of China[51809262] ; Natural Science Foundation of China[41871020] |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000514254300013 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Development Program of China ; Research and Demonstration Program of Precise Warning and Emergence Disposal Technologies against geo-hazards in Jiuzhaigou scenic area ; Natural Science Foundation of China |
| 源URL | [http://ir.imde.ac.cn/handle/131551/34111]  |
| 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 |
| 通讯作者 | Wei, F.Q.; Hu, K.H. |
| 作者单位 | 1.山地所 2.国家工服中心 3.国家气象中心 4.重庆绿色智能院 5.美国德克萨斯理工大学 |
| 推荐引用方式 GB/T 7714 | Zhang SJ,Xu, C.X.,Wei, F.Q.,et al. A physics-based model to derive rainfall intensity-duration threshold for debris flow[J]. Geomorphology,2020,351:106931. |
| APA | Zhang SJ.,Xu, C.X..,Wei, F.Q..,Hu, K.H..,Xu, H..,...&Zhang, G.P..(2020).A physics-based model to derive rainfall intensity-duration threshold for debris flow.Geomorphology,351,106931. |
| MLA | Zhang SJ,et al."A physics-based model to derive rainfall intensity-duration threshold for debris flow".Geomorphology 351(2020):106931. |
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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