科学技術振興調査費による省際基礎研究「地殻破壊の前兆現象としての電磁放射の特性に関する研究 : 中間報告書

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The synthetic approach of predicting earthquakes and volcanic eruptions is expected to provide a more reliable information for issuing alarming to mitigate the disasters. There is a growing interests in the electromagnetic phenomena of low frequency as an candidate of imminent precursory phenomena. In this research project granted by the "Research by the Special Coordination Funds for Promoting Science and Technology", the principal aim is the evaluation of the phenomena whether and how these phonomena are useful for the prediction work. The approach is directed into three category : 1) Analytical estimation of decay of the electromagnetic signals originated at source regions in heterogeneous media of electrical conductivity, 2) laboratory experiments of rock fracture to infer the dominant mechanism of the electromagnetic phenomena preceding the crustal ruptures, and 3) field experiments by means of various measurement instruments to find most efficient physical quantities to be observed, locate source region, and to find probabilistic relations of anomalous phonomena with earthquakes and with volcanic eruptions. This report is a collection of interim reports of each research group. The final report, will be published in 1993.
1993-03-29