The influence of intense rainfall on the activity of large-scale crystalline schist landslides in Shikoku Island, Japan

被引：123

作者：

Hong, Y

Hiura, H

Shino, K

Sassa, K

Suemine, A

Fukuoka, H

Wang, GH

机构：

[1] Kochi Univ, Fac Agr, Kochi 7838502, Japan

[2] Ehime Univ, United Grad Sch Agr Sci, Kochi 7838502, Japan

[3] Kyoto Univ, Disaster Prevent Res Inst, Kyoto 6110011, Japan

来源：

LANDSLIDES | 2005年 / 2卷 / 02期

关键词：

crystalline schist; landslide; intense rainfall; effective rainfall; intense rainfall-induced displacement (IRID); relative landslide displacement (RLD);

D O I：

10.1007/s10346-004-0043-z

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Many large landslides in the crystalline schist region of Shikoku Island, Japan, are susceptible to intense rainfall. Through the use of on-site monitoring systems, the activity of landslides and their meteorological triggers can be assessed. Continuous high-intensity rainfall was found to play a key role in provoking landslide movement. This paper investigates the influence of intense rainfall on the activity of crystalline schist landslides by examining rainfall and displacement of four typical landslides. By defining and calculating the effective rainfall and the relative landslide displacement, the relationship between intense rainfall and rainfall-induced landslide movement was analysed. Results indicate that the intense rainfall-induced landslide movement can be correlated with the effective rainfall. From these results, two rainfall thresholds were identified for the landslide risk management of Shikoku Island.

引用

页码：97 / 105

页数：9

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