IGARASHI Toshihiro

J-GLOBAL         Last updated: Dec 25, 2018 at 11:13
 
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Name
IGARASHI Toshihiro
Affiliation
The University of Tokyo
Section
Earthquake Research Institute
Job title
Assistant Professor
Degree
Ph. D.(Tohoku University)

Research Interests

 
 

Research Areas

 
 

Education

 
 
 - 
2001
Graduate School, Division of Natural Science, Tohoku University
 
 
 - 
1996
Department of Geophysics, Faculty of Science, Tohoku University
 

Published Papers

 
Emergence and disappearance of very small repeating earthquakes on a geological fault in a gold mine in South Africa
Junya Yamaguchi, Makoto Naoi, Masao Nakatani, Hirokazu Moriya, Toshihiro Igarashi, Osamu Murakami, Yasuo Yabe, Raymond Durrheim, and Hiroshi Ogasawara
Tectonophysics   747-748 318-326   2018   [Refereed]
Earthquake Clusters in the Japanese Islands -Detection and Spatial-Temporal Characteristics-
IGARASHI Toshihiro
ZISIN   70 183-194   2017   [Refereed]
Receiver function images of the distorted Philippine Sea slab contact with the continental crust: implications for generation of the 1891 Nobi earthquake (Mj 8.0)
T. Iidaka, T. Igarashi, A. Hashima, A. Kato, T. Iwasaki, The Research Group for the Joint Seismic Observations at the Nobi area
Tectonophysics   717 41-50   2017   [Refereed]
A trial extraction of crustal deformation from seafloor hydraulic pressure gauges to estimate interplate coupling for subduction plate boundaries
Keisuke Ariyoshi, Akira Nagano, Takuya Hasegawa, Motoyuki Kido, Ryoko Nakata, Hiroyuki Matsumoto, Naoki Uchida, and Toshihiro Igarashi
Proceedings of the 12th Society of Exploration Geophysicists of Japan International Symposium   245-247   2015   [Refereed]
Unexpectedly frequent occurrence of very small repeating earthquakes (-5.1 ≦ Mw ≦ -3.6) in a South African gold mine: implications for monitoring intraplate faults
Makoto Naoi, Masao Nakatani, Toshihiro Igarashi, Kenshiro Otsuki, Yasuo Yabe, Thabang Kgarume, Osamu Murakami, Thabang Masakale, Luiz Ribeiro, Anthony Ward, Hirokazu Moriya, Hironori Kawakata, Shigeru Nakao, Raymond Durrheim, and Hiroshi Ogasawara
Journal of Geophysical Research   120 8478-8493   2015   [Refereed]
Imaging crust and upper mantle beneath Mt. Fuji, Japan, by receiver functions
Sawako Kinoshita, Toshihiro Igarashi, Yosuke Aoki, and Minoru Takeo
Journal of Geophysical Research   120 3240-3254   2015   [Refereed]
Hypocenter migration and crustal seismic velocity distribution observed for the inland earthquake swarms induced by the 2011 Tohoku-Oki earthquake in NE Japan: implications for crustal fluid distribution and crustal permeability
Tomomi Okada, Toru Matsuzawa, Norihito Umino, Keisuke Yoshida, Akira Hasegawa, Hiroaki Takahashi, Takuji Yamada, Masahiro Kosuga, Tetsuya Takeda, Aitaro Kato, Toshihiro Igarashi, Kazushige Obara, Shinichi Sakai, Atsushi Saiga, Takashi Iidaka, Takaya Iwasaki, Naoshi Hirata, Noriko Tsumura, Yoshiko Yamanaka, Toshiko Terakawa, Haruhisa Nakamichi, Takashi Okuda, Shinichiro Horikawa, Hiroshi Katao, Tsutomu Miura, Atsuki Kubo, Takeshi Matsushima, Kazuhiko Goto, and Hiroki Miyamachi
Geofluids   15(1-2) 293-309   2015   [Refereed]
Detection of a hidden Boso slow slip event immediately after the 2011 Mw 9.0 Tohoku-Oki earthquake, Japan
Aitaro Kato, Toshihiro Igarashi, and Kazushige Obara
Geophysical Research Letters   41 5868-5874   2014   [Refereed]
Trench-parallel crustal anisotropy along the trench in the fore-arc region of Japan
Takashi Iidaka, Jun Muto, Kazushige Obara, Toshihiro Igarashi, and Bunichiro Shibazaki
Geophysical Research Letters   41(6) 1957-1963   2014   [Refereed]
Imaging the source regions of normal faulting sequences induced by the 2011 M9.0 Tohoku-Oki earthquake
Kato, A., T. Igarashi, K. Obara, S. Sakai, T. Takeda, A. Saiga, T. Iidaka, T. Iwasaki, N. Hirata, K. Goto, H. Miyamachi, T. Matsushima, A. Kubo, H. Katao, Y. Yamanaka, T. Terakawa, H. Nakamichi, T. Okuda, S. Horikawa, N. Tsumura, N. Umino, T. Okada, M. Kosuga, H. Takahashi, and T. Yamada
Geophysical Research Letters   40(2) 273-278   2013   [Refereed]
Seismic structure of the source region of the 2007 Chuetsu-oki earthquake revealed by offshore-onshore seismic survey: Asperity zone of intraplate earthquake delimited by crustal inhomogeneity
Nakahigashi, K., M. Shinohara, E. Kurashimo, T. Yamada, A. Kato, T. Takanami, K. Uehira, Y. Ito, T. Iidaka, T. Igarashi, H. Sato, R. Hino, K. Obana, Y. Kaneda, N. Hirata, T. Iwasaki, and T. Kanazawa
Tectonophysics   562-563 34-47   2012   [Refereed]
Regional extent of the large coseismic slip zone of the 2011 Mw 9.0 Tohoku-Oki Earthquake delineated by on-fault aftershocks
Kato, A. and T. Igarashi
Geophysical Research Letters   39 doi:10.1029/2012GL052220   2012   [Refereed]
Propagation of slow slip leading up to the 2011 Mw9.0 Tohoku-oki earthquake
Kato, A., K. Obara, T. Igarashi, H. Tsuruoka, S. Nakagawa, and N. Hirata
Science   335 705-708   2012   [Refereed]
Twenty thousand aftershocks of a very small (M2) earthquake and their relations to the mainshock rupture and geological structures
Naoi, M., M. Nakatani, Y. Yabe, G. Kwiatek, T. Igarashi, K. Plenkers
Bull. Seismol. Soc. Am.   101(5) 2399-2407   2011   [Refereed]
Anomalous depth dependency of the stress field in the 2007 Noto Hanto, Japan, earthquake: Potential involvement of a deep fluid reservoir
Kato, A., S. Sakai, T. Iidaka, T. Iwasaki, E. Kurashimo, T. Igarashi, N. Hirata, T. Kanazawa, K. Katsumata, H. Takahashi, R. Honda, T. Maeda, M. Ichiyanagi, T. Yamaguchi, M. Kosuga, T. Okada, J. Nakajima, S. Hori, T. Nakayama, A. Hasegawa, T. Kono, S. Suzuki, N. Tsumura, Y. Hiramatsu, K. Sugaya, A. Hayashi, T. Hirose, A. Sawada, K. Tanaka, Y. Yamanaka, H. Nakamichi, T. Okuda, Y. Iio, K. Nishigami, M. Miyazawa, H. Wada, N. Hirano, H. Katao, S. Ohmi, K. Ito, I. Doi, S. Noda, S. Matsumoto, T. Matsushima, A. Saiga, H. Miyamachi, K. Imanishi, T. Takeda, Y. Asano, Y. Yukutake, T. Ueno, T. Maeda, T. Matsuzawa, S. Sekine, M. Matsubara and K. Obara
Geophysical Research Letters   38 doi:10.1029/2010GL046413   2011   [Refereed]
Crustal structure in the Japanese Islands inferred from receiver function analysis
Igarashi, T., T. Iidaka and S. Miyabayashi
ZISIN   63(3) 139-151   2011   [Refereed]
Spatial changes of inter-plate coupling inferred from sequences of small repeating earthquakes in Japan
IGARASHI Toshihiro
Geophysical Research Letters   37 doi:10.1029/2010GL044609   2010   [Refereed]
Crust and uppermost mantle structure beneath central Japan inferred from receiver function analysis
Toshihiro Igarashi, Takashi Iidaka, Takaya Iwasaki, Takuo Shibutani, Tomotake Ueno, and Japanese University Group of the Joint Seismic Observation at the Niigata-Kobe Tectonic Zone
Earth Planet Space   61(11) 1215-1221   2009   [Refereed]
Observation of numerous aftershocks of an Mw1.9 earthquake with an AE network installed in a deep gold mine in South Africa
Yabe, Y., J. Philipp, M. Nakatani, G. Morema, M. Naoi, H. Kawakata, T. Igarashi, G. Dresen, H. Ogasawara, and JAGUARS
Earth Planet Space   61(10) e49-e52   2009   [Refereed]
Configuration of the subducting Philippine Sea slab in the eastern part of southwestern Japan with seismic array and Hi-net data
Iidaka, T., T. Igarashi, and T. Iwasaki
Gondwana Research   16(3-4) 504-511   2009   [Refereed]
Seismic velocity discontinuities in the crust and uppermost mantle beneath the Kanto district, central Japan, identified from receiver function imaging and repeating earthquake activity
Igarashi, T.
Gondwana Research   16(3-4) 491-503   2009   [Refereed]
Reactivation of ancient rift systems triggers devastating intraplate earthquakes
Kato, A., E. Kurashimo, T. Igarashi, S. Sakai, T. Iidaka, M. Shinohara, T. Kanazawa, T. Yamada, N. Hirata, T. Iwasaki
Geophysical Research Letters   36 doi:10.1029/2008GL036450   2009   [Refereed]
The Spatio-temporal change in the activity of the intermediate-depth earthquakes in the Pacific plate benearth the northeastern Japan arc
Igarashi, T., T. Matsuzawa, and A. Hasegawa
ZISIN   54(4) 465-474   2002   [Refereed]
Igarashi, T., T. Matsuzawa, N. Umino, and A. Hasegawa
Journal of Geophysical Research   106(B2) 2177-2191   2001   [Refereed]
Characteristic small-earthquake sequence off Sanriku, northeastern Honshu, Japan
Matsuzawa, T., T. Igarashi, and A. Hasegawa
Geophysical Research Letters   29(11) doi:10.1029/2001GL014632   2002   [Refereed]
Interplate quasi-static slip off Sanriku, NE Japan, estimated from repeating earthquakes
Uchida, N., T. Matsuzawa, T. Igarashi, and A. Hasegawa
Geophysical Research Letters   30(15) doi:10.1029/2003GL017452   2003   [Refereed]
Repeating earthquakes and interplate aseismic slip in the northeastern Japan subduction zone
Igarashi T., T. Matsuzawa, and A. Hasegawa
Journal of Geophysical Research   108(B5) doi:10.1029/2002JB001920   2003   [Refereed]
Matsuzawa, T., N. Uchida, T. Igarashi, T. Okada, and A. Hasegawa
Earth Planets Space   56 803-811   2004   [Refereed]
Uchida, N., T. Matsuzawa, A. Hasegawa, and T. Igarashi
Earth Planet Science Letters   233 155-165   2005   [Refereed]
Kato, A., S. Sakai, N. Hirata, E. Kurashimo, S. Nagai, T. Iidaka, T. Igarashi, Y. Yamanaka, S. Murotani, T. Kawamura, T. Iwasaki, and T. Kanazawa
Earth Planet Space   57(6) 551-556   2005   [Refereed]
Imaging heterogeneous velocity structures and complex aftershock distributions in the source region of the 2007 Niigataken Chuetsu-oki Earthquake by a dense seismic observation
Kato, A., S. Sakai, E. Kurashimo, T. Igarashi, T. Iidaka, N. Hirata, T. Iwasaki, T. Kanazawa, and Group for the aftershock observations of the 2007 Niigataken Chuetsu-oki Earthquake
Earth Planet Space   60 1111-1116   2008   [Refereed]
Kato, A., S. Sakai, T. Iidaka, T. Iwasaki, E. Kurashimo, T. Igarashi, N. Hirata, T. Kanazawa, and Group for the aftershock observations of the 2007 Noto Hanto Earthquake
Earth Planet Space   60 105-110   2008   [Refereed]
Sakai, S., A. Kato, T. Iidaka, T. Iwasaki, E. Kurashimo, T. Igarashi, N. Hirata, T. Kanazawa, and the group for the joint aftershock observation of the 2007 Noto Hanto Earthquake
Earth Planet Space   60 83-88   2008   [Refereed]

Association Memberships

 
 

Research Grants & Projects

 
Seismological study on subduction process of the plate
Project Year: 1996