| Summary: | 碩士 === 國立成功大學 === 地球科學系 === 102 === Taiwan is located between the Eurasian Plate and the Philippine Sea plate, Longitudinal Valley Fault in Taiwan is a common geological structure. Because of creep characteristic, most of geological surveys in this area to date. Chihshang Fault probably has more than one fault line like different branches and small faults.
We use “Resistivity” to describe the electrical properties of material and matters. In this study we use digital ground resistivity meter to detect the area at Tien-Kuang in Chihshang in Taitung. Input this survey data, we use an iterative program to output the resistivity model, finally produce resistivity image profile,RIP.
We set three lines at Tien-Kuang in this study. Bounded by rupture observed in ditches, in the north is line 107 and 108, the south is line 101. Through the program processing, the thickness of the alluvial layer with high resistivity is about 30 meters in this area. Under this layer is a low resistivity layer. The thickness is about 100 meters. There is an electrical discontinuity about 50 to 60 meters in the west side of this survey lines. These surface rupture should be producing by Chihshang fault when acting.
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