Long range gas-geochemical anomalies of a remote earthquake recorded simultaneously at distant monitoring stations in India
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- CHAUDHURI HIROK
- Variable Energy Cyclotron Centre
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- BARI WASEEM
- Physics Department, University of Kashmir
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- IQBAL NASEER
- Physics Department, University of Kashmir
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- BHANDARI RAKESH K.
- Variable Energy Cyclotron Centre
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- GHOSE DEBASIS
- Variable Energy Cyclotron Centre
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- SEN PRASANTA
- Saha Institute of Nuclear Physics
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- SINHA BIKASH
- Variable Energy Cyclotron Centre
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Continuous He, 222Rn concentrations and gamma dose rate were simultaneously monitored for pre-seismic signatures at two thermal springs in India that are separated at a distance of approximately 1612 km. The recordings of six month monitoring period (September 15, 2007–March 15, 2008) are presented here. In this paper, we make a cross correlation study of the simultaneously recorded multi-component gas-geochemical data from the two thermal springs. In the monitoring period a number of prominent fluctuations beyond the regular diurnal variations in the gas composition were recorded. We attempt to find out the linkage between the recorded distinct variations with local and remote seismic activities. Anomalous fluctuations in the spring gases were observed during the period December 24–27, 2007 at both the thermal springs and these anomalies may be correlated to the distant (~1000 km) China earthquake of magnitude M = 6.3 that occurred on January 09, 2008. Based on the obtained sequence of data points a time series analysis to relate earthquake magnitude, epicentral distance and precursor time through statistical methods and empirical equations related to the zone of influence is made. Concurrent monitoring of multi-component gas-geochemical anomalies recorded at a number of distant sites appears to be a potential tool to deal with the commonly debated question of earthquake precursors.
収録刊行物
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- GEOCHEMICAL JOURNAL
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GEOCHEMICAL JOURNAL 45 (2), 137-156, 2011
一般社団法人日本地球化学会
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詳細情報 詳細情報について
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- CRID
- 1390282679529728128
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- NII論文ID
- 130004469316
- 10028198407
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- NII書誌ID
- AA00654975
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- COI
- 1:CAS:528:DC%2BC3MXnsFylu7c%3D
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- ISSN
- 18805973
- 00167002
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- NDL書誌ID
- 11047231
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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