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Vol.48, No.2, PP.63-103
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1
Sediment Trap Quantization Efficiency for Sabo Dams in the Torrents– The Case Studies in Southwest Taiwan
48(2):63-75
I-Ta Tsai [1] Hui-Bang Lien [1,2] Zhong-Qiang Lee [1] Chun-Hung Wu [2] *
* Corresponding Author. E-mail : chhuwu@fcu.edu.tw
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2
The Spatial Framework for Riparian Vegetation Distribution and River Morphology
48(2):76-85
Cheng-Wei Kuo Kuei-Yuan Peng Shiuan-Pei An Su-Chin Chen*
* Corresponding Author. E-mail : scchen@nchu.edu.tw
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3
The Drag and Lift Forces for Riparian Grasses That are Deflected by Channel Flow
48(2):86-91
Jin-Fu Li Kuei-Yuan Peng Su-Chin Chen*
* Corresponding Author. E-mail : scchen@nchu.edu.tw
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4
The Use of a Weight of Evidence Approach to Determine the Potential for the Occurrence of Debris-Flow in the Gaoping River Basin
48(2):92-100
Chiu-Yen He[1] Chyan-Deng Jan[1][2]* Ssu-Yao Yang[1]*
* Corresponding Author. E-mail : cdjan@mail.ncku.edu.tw
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The Use of a Weight of Evidence Approach to Determine the Potential for the Occurrence of Debris-Flow in the Gaoping River Basin
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Chiu-Yen He[1] Chyan-Deng Jan[1][2]* Ssu-Yao Yang[1]*

Abstract
This study uses the weight of evidence method (WEM) to determine the relationship between the physiographical
factors and the occurrence of debris flow, in order to determine the potential for the occurrence of debris
flow. The chances and their ratios are used in a WEM to determine the weighting factors for 12 physiographical factors that relate to the occurrence of debris flow. The linear sum of 12 weighting factors forms an integrated physiographical susceptibility index (SI). The higher the value of the SI for a watershed, the greater is the potential for debris flow. Debris flow events that occurred in the Gaoping River Basin (GRB) from 2005 to 2012 are studied using WEM in this study. The SI-values for debris-flow-stream watersheds are calculated and ranked to produce successive rate curves. The area under the successive rate curves (AUC) in GRB is then calculated for 8 severe rainfall events during this period. The result shows that the values for the AUC are between 0.7 and 0.9, so WEM and the proposed-SI accurately predict the potential for the occurrence of debris flow.
Key Words: Debris flow, Weight of evidence, physiographical factors.
〔1〕Department of Hydraulic and Ocean Engineering, National Cheng Kung University, Tainan, Taiwan, R.O.C.
〔2〕Department of Ecological Soil and Water Conservation Research Center, NCKU, Tainan, Taiwan, R.O.C.
* Corresponding Author. E-mail : cdjan@mail.ncku.edu.tw
Received: 2017/01/22
Revised: 2017/02/23
Accepted: 2017/03/31
5
Accelerating Soil Moisture Determination with Microwave Oven
48(2):101-103
Jalal Jalilian1* Sina Siavash Moghaddam2 and Yadollah Tagizadeh3
* Corresponding Author. E-mail : j.jalilian@urmia.ac.ir
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