Japan Geoscience Union Meeting 2014

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Symbol S (Solid Earth Sciences) » S-EM Earth's Electromagnetism

[S-EM36_30PO1] Electrical conductivity, Tectono-electromagnetism

Wed. Apr 30, 2014 6:15 PM - 7:30 PM Poster (3F)

Convener:*Yamazaki Ken'ichi(Disaster Prevention Research Institute, Kyoto University), Noriko Tada(Japan Agency for Marine-Earth Science and Technology)

6:15 PM - 7:30 PM

[SEM36-P01] Long-term variation of geomagnetic transfer function in Japan

*Masahiko TAKEDA1 (1.Data Analysis Center for Geomagnetism and Space Magnetism, Kyoto Univ.)

Keywords:geomagnetism, transfer function, long-term variation, induced current, locality

Time variation of geomagnetic transfer function in Japan was studied for long period of since 1985. Most of the long-term variation is common at most observatories, and some of then are due to the solar activity. However, different behavior of the variation was found at some observatories, which may be caused by time variation of the local conductivity structure in the earth.