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Authors: Florindo, F.* 
Alfonsi, L.* 
Title: Strong earthquakes and geomagnetic jerks: a cause-effect relationship?
Issue Date: Sep-1995
Series/Report no.: 38/3_4
Keywords: secular variation
Subject Classification05. General::05.05. Mathematical geophysics::05.05.99. General or miscellaneous 
05. General::05.06. Methods::05.06.99. General or miscellaneous 
Abstract: Secular variation of the geomagnetic field observed at the Earth's surface has been found to undergo impulsive accelerations Gerks) lasting less than a few years. In this paper the relations between jerks and the occurrence of strong earthquakes (Ms ≥ 7.0) is analysed for this century , disclosing a positive correlation between the maximum number of recorded strong earthquakes and jerk occurrence. Analysing only very strong earth- quakes (Ms ≥ ; 8.0) the jerks seem to take pIace with a time delay of about 2-5 years with respect to earthquake occurrence. Reliable processes that could justify this intriguing correspondence are suggested.
Appears in Collections:Annals of Geophysics

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