Determination of effective antecedent rainfall for debris flow forecast based on soil moisture content observation in Jiangjia Gully, China
文献类型：会议论文
| 作者 | Hu K. ; Zhang J.; Jiang Y.; Jiang Y.
|
| 出版日期 | 2008 |
| 会议名称 | 2nd International Conference on Monitoring, Simulation, Prevention and Remediation of Dense and Debris Flows |
| 会议日期 | 2008 |
| 会议地点 | New Forest, ENGLAND |
| 关键词 | debris flow forecast antecedent rainfall effective rainfall soil moisture content |
| 通讯作者 | F. Wei(韦方强) |
| 英文摘要 | Effective antecedent rainfall (EAR), one of important factors for debris flow forecast, has different ways of influencing debris flow initiation for different types of debris flows. For soil-mechanics-typed debris flow, EAR impacts its initiation by changing the soil moisture content, and for hydromechanics-typed debris flow, EAR impacts its initiation by increasing the surface runoff. For this reason, the methods of determining EAR for different types of debris flows are different. The method for the former type of debris flow is discussed in this paper. Under the assumptions that soil moisture content due to antecedent rainfall decays in the same way as EAR, and that the decays for different events are mutually independent, the variation of EAR can be carried out through analyzing the variation of soil moisture content. The EAR for debris flow forecast can then be determined. The decaying of soil moisture content had been analyzed according to the field observation of rainfall and soil moisture content in Jiangjia Gully in Yunan Province, where debris flows are caused by soil mechanical changing triggered by rainfall. Based on the field observation and data analysis, the formula of calculating EAR for Jiangjia Gully is made out with least-squares procedure. |
| 收录类别 | CPCI（ISTP） |
| 会议主办者 | WITpress |
| 会议录 | Monitoring, Simulation, Prevention and Remediation of Dense Debris Flows II
 |
| 会议录出版者 | WIT PRESS, ASHURST LODGE, SOUTHAMPTON SO40 7AA, ASHURST, ENGLAND |
| 会议录出版地 | ENGLAND |
| 语种 | 英语 |
| ISSN号 | 1746-4471 |
| ISBN号 | 978-1-84564-118-4 |
| 源URL | [http://192.168.143.20:8080/handle/131551/4977]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） 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 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 推荐引用方式 GB/T 7714 | Hu K.,Zhang J.,Jiang Y.,et al. Determination of effective antecedent rainfall for debris flow forecast based on soil moisture content observation in Jiangjia Gully, China[C]. 见:2nd International Conference on Monitoring, Simulation, Prevention and Remediation of Dense and Debris Flows. New Forest, ENGLAND. 2008. |
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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