地球化学的地震予知研究について

概要

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Geochemical research for earthquake prediction is reviewed in this paper. In Japan, the term 'geochemical research for earthquake prediction' incorporates also hydrological and/or geohydrological researches for the same purpose. Brief introduction is made of the dilatancy-diffusion model on which earthquake-predictive geochemical research was largely based in the 1970's. Theoretical aspects of groundwater response to crustal strain changes in a water-saturated, porous and elastic medium are also discussed, because it seems to supplant the dilatancy-diffusion model as the theoretical basis for the earthquake-predictive geochemical research. Several studies on groundwater level, temperature, quality, and on the concentrations of Rn, He and H_2 in groundwater and subsurface gas are also briefly introduced. Some problems in this research are pointed out together with suggestions for future studies.
1997-05-31