Multi-Time Scale Analysis of Annual Sediment Yield of the Jiangjiagou Debris Flow in Dongchuan of Yunnan Based on Empirical Model Decomposition
详细信息
- 责任者：Lin Wei (Southwest Electric Power Design Institute ; Chengdu 610021 ; China) ; Xie Hong
- 刊名：Geoscience
- 出版年：2013
- 卷期：27(3)
- 关键词：泥石流 ; debris flows ; 云南 ; Yunnan Province
- 页码：p.733-737
- 图表：3 illus., 2 tables, 11 refs.
- 分类号：1800
- issnNo：ISSN1000-8527
- isbnNo：CN11-2035/P
摘要
Empirical Model Decomposition (EMD) was used to study the multi-time scale analysis for the time series of the annual sediment yield of the Jiangjiagou debris flow between 1965 and 2004 in Dongchuan, Yunnan Province. The result shows that this annual sediment yield can be decomposed into three IMF components and one Res trend component. The human activities have changed the local environment, providing the solid material for Jiangjiagou debris flow, thus make the cyclical fluctuations of the annual sediment discharge of debris flow in Jiangjiagou become more complex.