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Changing He/Ar and N2/Ar ratios of fault air may be earthquake precursors

Nature volume 275, pages 209–211 (1978)Cite this article

Abstract

THE geochemical method for the prediction of earthquakes depends on the ability to find the anomalous change of fluid phases of the ground, which are expelled by the stress at depth before earthquakes. Here the utility of ratios of He/Ar and N2/Ar in fault airs is examined in this context.

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Authors and Affiliations

  1. Department of Earth Sciences, Nagoya University, Nagoya, Japan

    RYUICHI SUGISAKI

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  1. RYUICHI SUGISAKI
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SUGISAKI, R. Changing He/Ar and N2/Ar ratios of fault air may be earthquake precursors. Nature 275, 209–211 (1978). https://doi.org/10.1038/275209a0

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