標題: A simple and feasible process for using multi-stage high-precision DTMs, field surveys and rainfall data to study debris flow occurrence factors of Shenmu area, Taiwan
作者: Lo, W-C
Lin, B-S
Ho, H-C
Keck, J.
Yin, H-Y
Shan, H-Y
土木工程學系
Department of Civil Engineering
公開日期: 2012
摘要: The occurrence of typhoon Herb in 1996 caused massive landslides in the Shenmu area of Taiwan. Many people died and stream and river beds were covered by meters of debris. Debris flows almost always take place in the Shenmu area during the flood season, especially in the catchment areas around Tsushui river and Aiyuzih river. Anthropogenic and natural factors that cause debris flow occurrences are complex and numerous. The precise conditions of initiation are difficult to be identified, but three factors are generally considered to be the most important ones, i.e. rainfall characteristics, geologic conditions and topography. This study proposes a simple and feasible process that combines remote sensing technology and multi-stage high-precision DTMs from aerial orthoimages and airborne LiDAR with field surveys to establish a connection between three major occurrence factors that trigger debris flows in the Shenmu area.
URI: http://hdl.handle.net/11536/20899
http://dx.doi.org/10.5194/nhess-12-3407-2012
ISSN: 1561-8633
DOI: 10.5194/nhess-12-3407-2012
期刊: NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
Volume: 12
Issue: 11
起始頁: 3407
結束頁: 3419
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