DISTRIBUTION OF LANDFILL BY GEOPHYSICAL EXPLORATION METHODS AT ILLEGAL INDUSTRIAL WASTES DISPOSAL SITE

Abstract

Serious environmental pollution has caused by illegal disposal of industrial wastes in Kagawa
Teshima Island, Kagawa Prefecture, Japan. For restitution of Teshima, a distribution of the industrial waste
by the drilling survey by past administration’s research became clear roughly. But since the wastes was
buried partially such as a pot into the sandy soil layer under the waste layer, it is necessary to investigate in
detail the thickness of the wastes as removal of the waste layer progressed.
In this paper, the surface wave prospecting, the microtremor, the Electromagnetic method (EM) sounding
and the Continuous wave radar sounding, which is new geophysical exploration methods, were carried out at
the illegal industrial wastes disposal site for the purpose of estimating the thickness of the waste layer with
sufficient accuracy.