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| | Abstract | | Integrated application and interpretation of geophysical techniques is expected to play an important role for delineating internal structure of levee body. However, it is hard to acquire detailed internal images by only means of the geophysical method from surface. Sounding or drilling is helpful for the characterization of levee body as a direct measurement and sampling technique, but has been still hard to evaluate the physical property of levee body. In contrast, the electric logging probe developed by the first author could measure detailed resistivity in slim hole as small as 30 mm. Moreover, we developed a new device that could also obtain resistivity profile along a 1 m long slim core sample. We utilized these tools at an actual site survey for the vulnerability investigation of damaged levee by flooding in the last September. As a result, the measured resistivity profiles were concordant not only with sounding profiles but also with lithofacies of core specimens. |
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