Analysis of the magnetometer response to the passage of seismic wave |
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| Authors: | S S Starzhinskii V M Nikiforov |
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| Institution: | (1) Graduate School of Information Science and Electrical Engineering, Kyushu University, Higashi-ku, Hakozaki 6-10-1, Fukuoka 812-8581, Japan,;(2) Research Institute for Electronic Science, Hokkaido University, N12-W6, Kita-ku, Sapporo 060-0812, Japan,;(3) Ecological Engineering, Toyohashi University of Technology, Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan, |
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| Abstract: | Results of synchronous recording magnetic variations and seismic vibrations caused by an earthquake with a magnitude M = 6.7 at a distance of 806 km from the observation site are considered. Measurements are carried out at the VLA observatory.
Different patterns of seismic noise generation and their contributions to the magnetic variations recorded by torsion magnetometer
are analyzed. As well, the correlation between the seismic and magnetic components is studied. The close correlation between
the seismic accelerations of rocks and the magnetic variations is revealed, and its transfer coefficient is estimated. Such
correlation in other types of magnetometers is supposed to hinder the measurement of seismomagnetic signals, which will require
the seismic noise parameters to be known for different types of magnetometers. |
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