An Investigation of Saline Water Distribution in a Coastal Plain by Various Electromagetic Methods

P039 AN INVESTIGATION OF SALINE WATER DISTRIBUTION IN A COASTAL PLAIN BY VARIOUS ELECTROMAGNETIC MEHODS Summary 1 Three different-scale electromagnetic measurements have been performed in the Kujyukuri coastal plain southeast Japan to understand the distribution of saline groundwater. The resultant resistivity sections estimated from three data sets independently were very consistent with each other. Two extremely conductive zones were revealed. One is deep and the other is shallow. The deep conductive zone is caused by the presence of brine water trapped into the Kazusa group composed of thick marine sediments. The shore-side portion of shallow conductive zone seems to be