Emission of radon and thoron due to the fracture of rock

Hishinuma, T. and Nishikawa, T. and Shimoyama, T. and Miyajima, M. and Tamagawa, Y. and Okabe, S. (1999) Emission of radon and thoron due to the fracture of rock. Il nuovo cimento C, 22 C (3-4). pp. 523-528. ISSN 1826-9885

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In order to investigate the fundamental processes of radon anomaly related to earthquakes, the measurement of the emission of radon and/or thoron from a rock under pressure has been carried out. The thoron emission increases after the crush of a rock. Before the crush, however, its increase is scarcely observed during compression. The emission of thoron varies under the gradual compression of the lumps of fractured rocks and diminishes to zero when they are compressed entirely. It is suggested from these facts that the precursory anomaly of radon related to earthquakes occurs in the fractured rock region such as faults.

Item Type: Article
Additional Information: Paper presented at the “Fourth International Conference on Rare Gas Geochemistry”, Rome, October 8-10, 1997.
Uncontrolled Keywords: Phenomena related to earthquake prediction; structure of the crust and upper mantle; radiation detectors; conference proceedings
Subjects: 500 Scienze naturali e Matematica > 550 Scienze della Terra
Depositing User: Marina Spanti
Date Deposited: 11 Oct 2019 12:53
Last Modified: 11 Oct 2019 12:53
URI: http://eprints.bice.rm.cnr.it/id/eprint/13460

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