行政院國家科學委員會專題研究計畫成果報告:地震造成新山崩地質環境特性之研究─(子計畫一)南投地區塊體崩移之研究（II）
Date Issued
2002
Date
2002
Author(s)
DOI
902116M002025
Abstract
Debris flows and landslides always
cause serious hazards in Taiwan because of
Taiwan’s geological, heavy rainfall and also
typhoons. This research mainly focus on the
debris flows and landslides in four tributaries
of Chenyoulan river, we would like to
discuss the characteristics, distribution, and
evolution of those. The first recorded debris
flow in that area is in 1985. More Hazards
was happened after the typhoon Herb in 1996.
Since that time, 921 earthquake and the
typhoon Toraji in 2001 stroke that place
severely.
The result shows that the causes of the
landslides in Feng Chu and Hseng Mu can be
divided into two types. On the slope, failure
caused by erosion is an important factor. On
the contrary, headward erosion mainly occurs
within gullies by heavy rainfall. Compared
with heavy rainfall, earthquake relatively
triggered bigger landslides.
In this two areas, typhoon Herb and
Toraji caused many small scale, headeard
erosion landslides, while the 921 earthquake
triggered off several big landslides.
Subjects
mass movement
debris flow
Chenyoulan river
earthquake
Publisher
臺北市：國立臺灣大學地理環境資源學系暨研究所
Type
report
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Format
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