Japan Geoscience Union Meeting 2016

Presentation information


Symbol P (Space and Planetary Sciences) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM16] Physics and Chemistry in the Atmosphere and Ionosphere

Tue. May 24, 2016 10:45 AM - 12:15 PM 106 (1F)

Convener:*Yuichi Otsuka(Solar-Terrestrial Environment Laboratory, Nagoya University), Takuya Tsugawa(National Institute of Information and Communications Technology), Seiji Kawamura(National Institute of Information and Communications Technology), Chair:Michi Nishioka(National Institute of Information and Communications Technology)

11:00 AM - 11:15 AM

[PEM16-02] Study of dynamics of tsunami ionospheric hole from geomagnetic observation

*Yuto Tomida1, Tatsuya Kanaya1, Masashi Kamogawa1, Makoto Uyeshima2 (1.Department of Physics, Tokyo Gakugei University, 2.Earthquake Research Institute, The University of Tokyo)

Keywords:Magnetic field, Earthquake, Tsunami, Tsunami ionospheric hole

Approximately several minutes after the occurrence of the mainshock of the M9.0 off the Pacific coast of Tohoku Earthquake on 11 March 2011, various geo-electromagnetic phenomena was in Japan and even in the magnetic conjugate point of Japan (i.e. Australia) through magnetic field lines as a field align current. In this paper, we show electromagnetic phenomena after the 2011Tohoku earthquake in the ionosphere such as tsunami ionospheric hole, seismo-field align current, Rayleigh-wave-induced ionospheric arc current, and seimic- ionospheric ring current (SRIC). SRIC was highly related to tsunami ionospheric hole observed by GPS-TEC.