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| | Abstract | | For the radioactive waste repository, it is important to estimate spatial distribution between saline water and fresh water boundary to evaluate long term geological stability of the repository. Geophysical prospecting is convenient to estimate spatial and deep geological condition from the surface quickly, however it is not able to detect water condition but physical information. This paper describes a trial to estimate spatial distribution of saline and fresh underground water boundary by 3-dimensional electromagnetic method. Authors apply Archies law to estimate resistivity distribution of core and groundwater samples from the several boreholes by JAEA in Horonobe, Hokkaido, and compare with electromagnetic investigation data. This trial introduces a possibility to estimate groundwater condition including its spatial distribution by combination of electromagnetic method and core sampling. |
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