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Possible Influence of the Solar Eclipse on the Global Geomagnetic Field

Published online by Cambridge University Press:  24 July 2018

Jung-Hee Kim  and
Heon-Young Chang
Jung-Hee Kim
Affiliation:
Department of Astronomy and Atmospheric Sciences, Kyungpook National University, Daegu 702-701, Korea email: hyc@knu.ac.kr Research and Training Team for Future Creative Astrophysicists and Cosmologists (BK21 Plus Program)
Heon-Young Chang
Affiliation:
Department of Astronomy and Atmospheric Sciences, Kyungpook National University, Daegu 702-701, Korea email: hyc@knu.ac.kr Research and Training Team for Future Creative Astrophysicists and Cosmologists (BK21 Plus Program)
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Abstract

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We investigate the geomagnetic field variations recorded by INTERMAGNET geomagnetic observatories. We confirm that the effect of solar eclipse can be seen over an interval of 180 minutes centered at the time of maximum eclipse on a site of a geomagnetic observatory. It is found that the effect of the solar eclipse on the geomagnetic field becomes conspicuous as the magnitude of a solar eclipse becomes larger. The effect of solar eclipses is more evident in the second half of the path of Moon’s shadow. We also find that the effect can be overwhelmed, more sensitively by geomagnetic disturbances than by solar activity of solar cycle.

Keywords

Solar Eclipsegeomagnetic Fielddata Analysis

References

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