Groundwater helium content related to the Spitak (Armenia) and Karymsky (Russia) earthquakes
The Spitak and Karymsky earthquakes occurred with M46.9 in Armenia and in Kamchatka (Russia), respectively. As regards the Spitak earthquake, we analysed the groundwater helium content data collected by three Georgian and one Armenian measurement sites; as regards the Karymsky earthquake, we analyse...
| Main Authors: | , , , , , , , |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Societa italiana di fisica
1999
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| Subjects: | |
| Online Access: | http://eprints.bice.rm.cnr.it/13343/ http://eprints.bice.rm.cnr.it/13343/1/ncc7942.pdf http://www.sif.it/riviste/ncc/econtents/1999/022/03-04/article/31 |
| Summary: | The Spitak and Karymsky earthquakes occurred with M46.9 in Armenia and in Kamchatka (Russia), respectively. As regards the Spitak earthquake, we analysed the groundwater helium content data collected by three Georgian and one Armenian measurement sites; as regards the Karymsky earthquake, we analysed the groundwater helium content data collected by two measurement sites in Kamchatka. The first analysis has pointed out that precursory anomalies appeared in the northern area with respect to the Spitak epicentre; on the contrary, only co-post seismic anomalies were revealed in the southern area. As regards the Karymsky earthquake, no pre-co-post seismic variation in the groundwater helium content was revealed at both the measurement sites. The analysis of other hydrogeochemical parameters, collected in these sites, revealed that one site does not show any anomaly; on the contrary, at the other measurement site clear preseimic anomalies appeared in some hydrogeochemical parameters. A possible explanation of the quoted results is presented. |
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