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| Titel |
Diurnal changes of earthquake activity and geomagnetic Sq-variations |
| VerfasserIn |
G. Duma, Y. Ruzhin |
| 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 ; 3, no. 3/4 ; Nr. 3, no. 3/4, S.171-177 |
| Datensatznummer |
250000675
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| Publikation (Nr.) |
 copernicus.org/nhess-3-171-2003.pdf |
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| Zusammenfassung |
| Statistic analyses
demonstrate that the probability of earthquake occurrence in many
earthquake regions strongly depends on the time of day, that is on Local
Time (e.g. Conrad, 1909, 1932; Shimshoni, 1971; Duma, 1997; Duma and
Vilardo, 1998). This also applies to strong earthquake activity. Moreover,
recent observations reveal an involvement of the regular diurnal
variations of the Earth’s magnetic field, commonly known as
Sq-variations, in this geodynamic process of changing earthquake activity
with the time of day (Duma, 1996, 1999). In the article it is attempted to
quantify the forces which result from the interaction between the induced
Sq-variation currents in the Earth’s lithosphere and the regional Earth’s
magnetic field, in order to assess the influence on the tectonic stress
field and on seismic activity. A reliable model is obtained, which
indicates a high energy involved in this process. The effect of
Sq-induction is compared with the results of the large scale
electromagnetic experiment "Khibiny" (Velikhov, 1989), where a
giant artificial current loop was activated in the Barents Sea. |
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