ELF electric field intensity at the time of VLF precursor in the DEMETER data

Masashi Kamogawa; Tetsuya Kodama; Toshiyasu Nagao

Presentation information

[J] Poster

M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS22] Electromagnetic phenomena associated with seismic and volcanic activities

Wed. May 29, 2019 1:45 PM - 3:15 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

convener:Tetsuya Kodama(Research Unit I, Research and Development Directorate, Japan Space Exploration Agency), Toshiyasu Nagao(Institute of Oceanic Research and development, Tokai University)

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[MIS22-P04] ELF electric field intensity at the time of VLF precursor in the DEMETER data

*Masashi Kamogawa¹, Tetsuya Kodama², Toshiyasu Nagao³ (1.Department of Physics, Tokyo Gakugei University, 2.Japan Space Exploration Agency, 3.Tokai University)

Keywords:Earthquake, Ionosphere, DEMETER satellite

A decrease of electric field at the 1.7 kHz, i.e., VLF electromagnetic waves, within 4 hours before neighboring earthquake (EQ) with the magnitude of more than 4.8 was statistically shown through the data set of in-situ DEMETER satellite measurement according to French groups (Nemec et al., GRL, 2008). In this study, we investigate the ELF intensity comparing with the pre-seismic VLF intensity decrease data.