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Vol.49, No.1, PP.001-069
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1
Landslide Distributions Identified by Satellite Images and Field Investigations in a Natural Forested Catchment: The Case of Landslides Induced by Typhoon Soudelor in 2015
49(1):001-011
Song-Jin Lin[1][2] Wei-Li Liang[1]*
* Corresponding Author. E-mail : liangwl@ntu.edu.tw
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2
Field Experiments on General Scour in Upstream Creek Riverbeds
49(1):012-026
Hsun-Chuan Chan[1]* Luo-An Sung[1] Wen-Huil Liao[2] Zheng-Jun Li[2]
* Corresponding Author. E-mail : hcchan@nchu.edu.tw
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Field Experiments on General Scour in Upstream Creek Riverbeds
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Hsun-Chuan Chan[1]* Luo-An Sung[1] Wen-Huil Liao[2] Zheng-Jun Li[2]

Abstract
This study performed a literature review and analyzed the types, influencing factors, estimation formulas,and measurement techniques of the general scour in rivers. To improve the efficiency of existing scour depth measuring technologies, the existing measurement methods were evaluated, and the float-out device was identified as
the most effective scouring measurement tool. The float-out device was tested in a laboratory channel. Subsequently,
two measurement stations were constructed in the Mei river, Nantou County in Taiwan, on May 31 and June 1, 2016,
respectively, to collect scouring data during floods. The scouring process of a heavy rainfall event was successfully
observed on June 13, 2016. The float-out device proved suitable for measuring the scour depth in the Mei river. When the results of the field survey and measured data of the float-out device were compared, the float-out device was revealed to be an effective and efficient method of measuring riverbed scour. In the future, the applications of this monitoring technique can be increased. By increasing the amount of field data, the accuracy and localization of the scour estimation formulas can be improved.
Keywords: Upstream creeks, scour, wireless tracer.
〔1〕Department of Soil and Water Conservation, National Chung Hsing University, Taichung, Taiwan, R.O.C.
〔2〕Soil and Water Conservation Bureau,Council of Agriculture,Executive Yuan, Nantou,Taiwan, R.O.C.
* Corresponding Author. E-mail : hcchan@nchu.edu.tw
Received: 2017/08/09
Revised: 2017/09/19
Accepted: 2017/10/18
3
Landslide Mapping and Geomorphologic Change Based on a Sky-View Factor and Local Relief Model: A Case Study in Hongye Village, Taitung
49(1):027-039
Ching-Fang Lee [1]* Ting-Chi Tsao [1] Wei-Kai Huang [1] Sheng-Chi Lin [2] Hsiao-Yuan Yin[3]
* Corresponding Author. E-mail : cflee@sinotech.org.tw
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4
Application of UAV imagery to analyze Phoenix Valley landslide and landslide dam
49(1):040-048
Ming-Der Yang* Kai-Siang Huang Chih-Fan Chao
* Corresponding Author. E-mail : mdyang@dragon.nchu.edu.tw
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5
Numerical Analysis on Landslide of an Inclined Soil Layer Caused by Rain Infiltration
49(1):049-058
Chyan-Deng Jan[1][2]* Shin-Lin Chen[1] Ssu-Yao Yang[1]
* Corresponding Author. E-mail : cdjan@mail.ncku.edu.tw
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6
Eco-Environmental Construction of the Taichung Han-Chi Drainage with Integration of Public Participation
49(1):059-069
Yung-Chi Shih Su-Chin Chen* Cheng-Wei Kuo
* Corresponding Author. E-mail : scchen@nchu.edu.tw
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