M-04 APPLICATION OF GEOPHYSICAL METHODS TO THE SAFETY ANALYSIS OF AN EARTH DAM JUNG-HO KIM 1 MYEONG-JONG YI 1 YOONHO SONG 1 SOON JEE SEOL 1 SEUNG-HWAN CHUNG 1 and KI-SEOG KIM 2 Summary 1 Integrated geophysical surveys have been performed at an earth dam where small-scale subsidence occurred on the crest. All the survey results of various geophysical methods consistently showed that some problems threatening the safety have been developing. In particular we could locate the parts of the dam having more serious problem. Through analyzing and comparing the various kinds of geophysical data we have concluded that the


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