National Changhua University of Education Institutional Repository : Item 987654321/19609
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 6507/11669
造访人次 : 30072083      在线人数 : 587
RC Version 3.2 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 进阶搜寻

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.ncue.edu.tw/ir/handle/987654321/19609

题名: Quantifying Rainfall Controls on Catchment-Scale Landslide Erosion in Taiwan
作者: Chen, Yi-Chin;Chang, Kang-Tsung;Chiu, Yu-Jia;Lau, Sze-Man;Lee, Hong-Yuan
贡献者: 地理學系
关键词: Landslide erosion;Extreme rainfall;Landslide volume;Landslide material;Taiwan
日期: 2013-03
上传时间: 2015-04-29T04:08:42Z
出版者: Wiley
摘要: Landslide erosion is a dominant hillslope process and the main source of stream sediment in tropical, tectonically active mountain belts. In this study, we quantified landslide erosion triggered by 24 rainfall events from 2001 to 2009 in three mountainous watersheds in Taiwan and investigated relationships between landslide erosion and rainfall variables. The results show positive power-law relations between landslide erosion and rainfall intensity and cumulative rainfall, with scaling exponents ranging from 2·94 to 5·03. Additionally, landslide erosion caused by Typhoon Morakot is of comparable magnitude to landslide erosion caused by the Chi-Chi Earthquake (MW = 7·6) or 22–24 years of basin-averaged erosion. Comparison of the three watersheds indicates that deeper landslides that mobilize soil and bedrock are triggered by long-duration rainfall, whereas shallow landslides are triggered by short-duration rainfall. These results suggest that rainfall intensity and watershed characteristics are important controls on rainfall-triggered landslide erosion and that severe typhoons, like high-magnitude earthquakes, can generate high rates of landslide erosion in Taiwan.
關聯: Earth Surface Processes and Landforms, 38(4): 372-382
显示于类别:[地理學系] 期刊論文

文件中的档案:

档案 大小格式浏览次数
index.html0KbHTML573检视/开启


在NCUEIR中所有的数据项都受到原著作权保护.

 

DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈