Japan Geoscience Union Meeting 2015

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Oral

Symbol M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS27] Electromagnetic phenomena associated with seismic and volcanic activities

Tue. May 26, 2015 4:15 PM - 6:00 PM 201A (2F)

Convener:*Tetsuya Kodama(Earth Observation Research Center, Space Applications Mission Directorate, Japan Space Exploration Agency), Yasuhide Hobara(Graduate School of Information and Engineering Department of Communication Engineering and Informatics, The University of Electro-Communications), Toshiyasu Nagao(Earthquake Prediction Research Center, Tokai University), Masashi Hayakawa(University of Electro-Communications), Chair:Masashi Hayakawa(Hayakawa Institute of Seismo Electromagnetics Co. Ltd.), Yasuhide Hobara(Graduate School of Information and Engineering Department of Communication Engineering and Informatics, The University of Electro-Communications)

5:15 PM - 5:30 PM

[MIS27-07] The role of earthquake source parameters in the subionospheric VLF/LF anomalies before main shock

*Tomoki KAWANO1, Kenshin TATSUTA1, Yasuhide HOBARA1 (1.Graduate School of Informatics and Engineering, The University of Electro-Communications)

Keywords:ionospheric perturbation, VLF/LF transmitter, earthquake, CMT solution

Although subionospheric VLF/LF anomalies have been observed for some of the major earthquakes, their generation mechanisms are still unclear. In this paper, we focus on the detailed earthquake source parameters such as centroid moment tensor (CMT) solution in addition to traditional earthquake magnitude and depth information to study the occurrence relationship between earthquake types and corresponding ionospheric anomalies. As a result, we found that the ionospheric anomalies are observed prominently in association with thrust type earthquakes.