Strong earthquakes associated with high amplitude daily geomagnetic variations

Taha Rabeh (), Miguel Miranda and Milan Hvozdara

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2010, vol. 53, issue 3, 574 pages

Abstract: In this work, we attempt to quantify forces that 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 its influence on the tectonic stress field and on seismic activity. The study area is the Sinai Peninsula, a seismically active region where both seismic and magnetic data are available. We show that both short-term and long-term magnetic changes correlate with the seismic activity extending to this area in other previous studies. We also analyze a set of large earthquakes and magnetic data from observatories around the world to deduce a relationship between earthquake magnitude and maximum distance up to which precursory variations of the magnetic field are observed. Copyright Springer Science+Business Media B.V. 2010

Keywords: Sq-variations; Diurnal variations; Earthquake’s epicenter; Magnetic signal (search for similar items in EconPapers)
Date: 2010
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DOI: 10.1007/s11069-009-9449-1

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