Acta Geodaetica et Geophysica Hungarica
Volume/Issue:
Volume 44: Issue 3
Significant anomalies of helium, radon and gamma ahead of 7.9 M China earthquake
Authors:
N. Das Variable Energy Cyclotron Centre 1/AF Bidhannagar Kolkata 700 064 India

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R. Bhandari Variable Energy Cyclotron Centre 1/AF Bidhannagar Kolkata 700 064 India

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D. Ghose Saha Institute of Nuclear Physics 1/AF Bidhannagar Kolkata 700 064 India

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P. Sen Saha Institute of Nuclear Physics 1/AF Bidhannagar Kolkata 700 064 India

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B. Sinha

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Pages:
357–365
Online Publication Date:
30 Jul 2009
Publication Date:
01 Sep 2009
Article Category:
Journal Article
DOI:
https://doi.org/10.1556/ageod.44.2009.3.7
Keywords:
anomaly; earthquake; geochemical; pre-seismic; stress
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Strong anomalies in the concentration of helium, radon and gamma were observed in gases at the geochemical monitoring station, Bakreswar, West Bengal, India, about two weeks before the 7.9 M earthquake at Sichuan, China. The distance between the epicenter of the earthquake and the monitoring site is about 1800 km. This long distance preseismic observation indicates that the radius of influence of large magnitude earthquakes may be substantially large and may cut across plate boundaries. This paper presents the observed geochemical anomalies for the Sichuan earthquake and discusses empirical postulates between earthquake magnitude and its radius of influence.

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Cover Acta Geodaetica et Geophysica Hungarica
Acta Geodaetica et Geophysica Hungarica
Print ISSN:
1217-8977
Online ISSN:
1587-1037

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Acta Geodaetica et Geophysica
Language English
Size B5
Year of
Foundation		 2013
Volumes
per Year		 1
Issues
per Year		 4
Founder Magyar Tudományos Akadémia
Founder's
Address		 H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó Springer
Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 2213-5812 (Print)
ISSN 2213-5820 (Online)

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