Influence of Solar Dipole Field on Earthquake Occurrence

Abstract

Aysegul Yilmaz

According to elastic rebound theory, a tectonic earthquake occurs often along faults, narrow zones where rock masses move in relation to one another. Then strains accumulated in these rock masses cause the stresses exceeding the strength of the rocks, a sudden fracturing results in an earthquake. The major fault lines of the Earth are located at the fringes of the huge tectonic plates that make up Earth’s crust.

As a new aspect of Earth-Planetary Science, our study investigates influence of solar magnetic field on triggering earthquake by comparing variations in Number of World’s Earthquakes (NEQKs) and Solar Equatorial Dipole Field (SEDF) [1].

In the following sections, to investigate the connection between solar magnetic field and earthquake occurrence we introduce an model for the outer core of Earth and consider the contributions from centripetal and cenrifugal foce applied by axial and equatorial dipole field of Earth, respectively coupling to axial and dipole fields of Sun throughout the interplanetary magnetic field during a solar cycle.

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