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[C-3.2 Study on Hydrogeological Response to Acid Rain for Geology and Soil]

[Contact Person]

Yuhsaku Tagutschi
Senior Researcher, Environmental Geology Department,
Geological Survey of Japan, Agency of Industrial Science and Technology,
Ministry of International Trade and Industry
1-1-3 Higashi, Tsukuba, Ibaraki, 305 Japan
Tel +81-298-54-3683, Fax +81-298-54-3533

[Total Budget for FY1990-1992]

19,884,000 Yen

[Abstract]

　It is necessary for evaluation of effect to groundwater by acid rain to grasp hydrogeological characteristics such as infiltration capacity, grain size, water content and chemical and mineralogical ones of geology and soil properties in the basin where acid rain falls. In this report, the authors selected Shirasu and Kanto loam, which are the most comon volcanic ash deposits in Japan, astypical soils and examined them through the batch and the infiltration experiments for about one month whether they are vulnerable for acid rain or not. Especially, the authors tried to draw a buffering capacity map of the Kanto loam for acid rain in the whole Kanto plain. Such kinds of map is valuable to prevent the acid rain problems to groundwater resources.

[Key Words]

Soil, Infiltration, Buffering capacity, Shirasu, Kanto loam