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Comparison of S-wave Yelocity Profiles Obtained by Down-hole Seismic Survey, MASW and SCPT with a Drilling Log in Unconsolidated Sediments  

Kim, Hyun-Do (Division of Civil and Ocean Engineering Department, Dong-A University)
Kim, Jin-Hoo (Division of Civil and Ocean Engineering Department, Dong-A University)
Publication Information
Journal of the Korean earth science society / v.25, no.4, 2004 , pp. 270-276 More about this Journal
Abstract
Multi-channel Analysis of Surface Waves (MASW) and Seismic Cone Penetration Test (SCPT) have been recently developed to obtain S-wave velocity profiles which were conventionally investigated by a down-hole seismic survey. For unconsolidated sedimentary sites, we studied these three methods, and compared the results with a drilling log. All the methods showed that the changes in the S-wave velocities were consistent with the changes in the sedimentary facies. In addition, the SCPT was most sensitive to changes in sedimentary facies among the three profiles. The results of the SCPT showed that there exists a low velocity zone, which is mainly composed of clayey sand, at the depth of 8${\sim}$12m in the sediments.
Keywords
S-wave profile; down-hole seismic survey; multi-channel analysis of surface waves (MASW); seismic cone penetration test (SCPT);
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