Skip to main content

Some NLM-NCBI services and products are experiencing heavy traffic, which may affect performance and availability. We apologize for the inconvenience and appreciate your patience. For assistance, please contact our Help Desk at info@ncbi.nlm.nih.gov.

Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1996 Apr 30;93(9):3781–3786. doi: 10.1073/pnas.93.9.3781

Geochemical challenge to earthquake prediction.

H Wakita 1
PMCID: PMC39437  PMID: 11607665

Abstract

The current status of geochemical and groundwater observations for earthquake prediction in Japan is described. The development of the observations is discussed in relation to the progress of the earthquake prediction program in Japan. Three major findings obtained from our recent studies are outlined. (i) Long-term radon observation data over 18 years at the SKE (Suikoen) well indicate that the anomalous radon change before the 1978 Izu-Oshima-kinkai earthquake can with high probability be attributed to precursory changes. (ii) It is proposed that certain sensitive wells exist which have the potential to detect precursory changes. (iii) The appearance and nonappearance of coseismic radon drops at the KSM (Kashima) well reflect changes in the regional stress state of an observation area. In addition, some preliminary results of chemical changes of groundwater prior to the 1995 Kobe (Hyogo-ken nanbu) earthquake are presented.

Full text

PDF
3781

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Scholz C. H., Sykes L. R., Aggarwal Y. P. Earthquake prediction: a physical basis. Science. 1973 Aug 31;181(4102):803–810. doi: 10.1126/science.181.4102.803. [DOI] [PubMed] [Google Scholar]
  2. Tsunogai U., Wakita H. Precursory chemical changes in ground water: kobe earthquake, Japan. Science. 1995 Jul 7;269(5220):61–63. doi: 10.1126/science.269.5220.61. [DOI] [PubMed] [Google Scholar]
  3. Wakita H., Fujii N., Matsuo S., Notsu K., Nagao K., Takaoka N. "Helium spots": caused by a diapiric magma from the upper mantle. Science. 1978 Apr 28;200(4340):430–432. doi: 10.1126/science.200.4340.430. [DOI] [PubMed] [Google Scholar]
  4. Wakita H., Nakamura Y., Notsu K., Noguchi M., Asada T. Radon Anomaly: A Possible Precursor of the 1978 Izu-Oshima-kinkai Earthquake. Science. 1980 Feb 22;207(4433):882–883. doi: 10.1126/science.207.4433.882. [DOI] [PubMed] [Google Scholar]

Articles from Proceedings of the National Academy of Sciences of the United States of America are provided here courtesy of National Academy of Sciences

RESOURCES