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| Titel |
Ionospheric anomaly due to seismic activities-III: correlation between night time VLF amplitude fluctuations and effective magnitudes of earthquakes in Indian sub-continent |
| VerfasserIn |
S. Ray, S. K. Chakrabarti, S. K. Mondal, S. Sasmal |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 11, no. 10 ; Nr. 11, no. 10 (2011-10-10), S.2699-2704 |
| Datensatznummer |
250009724
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| Publikation (Nr.) |
 copernicus.org/nhess-11-2699-2011.pdf |
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| Zusammenfassung |
| We present the results of an analysis of year-long (2007) monitoring
of night time data of the VLF signal amplitude from the Indian Navy
station VTX at 18.2 kHz, received by the Indian Centre for Space Physics,
Kolkata. We analyzed this data to find out the correlation,
if any, between night time amplitude fluctuation and seismic events.
We found, analyzing individual cases (with magnitudes >5) as well as
statistical analysis (of all the events with effective magnitudes
greater than 3.5), that night time fluctuation of the signal amplitude
has the highest probability to be beyond the 2σ level about three days prior
to seismic events. Thus, the night time fluctuation could be
considered as a precursor to enhanced seismic activities. |
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