Shoho Togo
Tokyo Gakugei University
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Publication
Featured researches published by Shoho Togo.
Journal of Geophysical Research | 2015
Masashi Kamogawa; Tatsuya Kanaya; Yoshiaki Orihara; Atsushi Toyoda; Yuko Suzuki; Shoho Togo; Jann-Yenq Liu
Ionospheric disturbances occurred as a result of the tsunami associated with the 2011 M9.0 off the Pacific Coast of the Tohoku Earthquake (EQ). The ionospheric disturbances propagated radially from the tsunami source area, termed the traveling ionospheric disturbance. In addition to the traveling ionospheric disturbance, an ionospheric plasma depression lasting for approximately 1 h occurred above the tsunami source area, called a tsunami ionospheric hole. In this study, we compare the ionospheric disturbances caused by large inland and submarine EQs to investigate whether an ionospheric plasma depression only occurs in association with a tsunami. Note that we term an EQ with a tsunami a submarine EQ. To investigate the presence of a plasma depression, i.e., an ionospheric hole, associated with an inland EQ, data on total electron content between the global positioning system satellite and its receivers were used. Comparison of two inland and two submarine EQ events with similar magnitudes around 7 showed that ionospheric holes were observed only for the submarine EQs. This discrepancy might be attributed to the different excitation amplitudes of the atmospheric acoustic waves between the unidirectional fault displacement and the tsunami uplift/depression, corresponding to half- and one-period variation. From this hypothesis, we predicted that an ionospheric hole could be observed after a significantly large inland EQ with a sufficiently large vertical ground displacement. In fact, we recognized the ionospheric hole generated by the large inland EQ that recently occurred in the Nepal with the magnitude of 7.8 on April 25, 2015.
Earth, Planets and Space | 2016
Kazuyoshi Z. Nanjo; Jun Izutsu; Yoshiaki Orihara; Nobuhiro Furuse; Shoho Togo; Hidetoshi Nitta; Tomohiro Okada; Rika Tanaka; Masashi Kamogawa; Toshiyasu Nagao
Japan Geoscience Union | 2017
Tetsuya Kodama; Masahiko Yamazaki; Masashi Kamogawa; Shoho Togo; Hidetoshi Nitta; Berthelier Jean-Jacques; Toshiyasu Nagao
Japan Geoscience Union | 2016
Shoho Togo; Hidetoshi Nitta; Masashi Kamogawa; Jean-Jacques Berthelier; Tetsuya Kodama; Toshiyasu Nagao
Japan Geoscience Union | 2016
Hidetoshi Nitta; Masashi Kamogawa; Shoho Togo; Jean-Jacques Berthelier; Tetsuya Kodama; Toshiyasu Nagao
Japan Geoscience Union | 2016
Hidetoshi Nitta; Shoho Togo; Masashi Kamogawa; Jean-Jacques Berthelier; Tetsuya Kodama; Toshiyasu Nagao
Japan Geoscience Union | 2016
Shoho Togo; Hidetoshi Nitta; Masashi Kamogawa; Jean-Jacques Berthelier; Tetsuya Kodama; Toshiyasu Nagao
Journal of Geophysical Research | 2015
Masashi Kamogawa; Tatsuya Kanaya; Yoshiaki Orihara; Atsushi Toyoda; Yuko Suzuki; Shoho Togo; Jann-Yenq Liu
Japan Geoscience Union | 2015
Hidetoshi Nitta; Shoho Togo; Masashi Kamogawa; Jean-Jacques Berthelier; Tetsuya Kodama
Japan Geoscience Union | 2015
Yushi Suto; Shoho Togo; Masashi Kamogawa; Jean-Jacques Berthelier; Tetsuya Kodama