Name: IGARASHI Toshihiro,
Position:Assistant Professor
Division/Center: Coordination Center for Prediction Research of Earthquakes and Volcanic Eruptions
Research Area: Seismology

Last Update 12/01 2015
Research:



Publications:

Igarashi, T., T. Matsuzawa, N. Umino, and A. Hasegawa, Spatial distribution of focal mechanisms for interplate and intraplate earthquakes associated with the subducting Pacific plate beneath the northeastern Japan arc: A triple-planed deep seismic zone , J. Geophys. Res., 106, B2, 2177--2191, 2001.

五十嵐俊博・松澤暢・長谷川昭, 東北日本沈み込み帯で発生する地震活動の時空間変化, 地震2, 54, 4, 465--474, 2002.

Matsuzawa, T., T. Igarashi, and A. Hasegawa, Characteristic small-earthquake sequence off Sanriku, northeastern Honshu, Japan, Geophys. Res. Lett., 29, 11, 1543, doi:10.1029/2001GL014632, , 2002.

Igarashi T., T. Matsuzawa, and A. Hasegawa, Repeating earthquakes and interplate aseismic slip in the northeastern Japan subduction zone, J. Geophys. Res., 108, 5, 2249, doi:10.1029/2002JB001920, , 2003.

Igarashi, T., Seismic velocity discontinuities in the crust and uppermost mantle beneath the Kanto district, central Japan, identified from receiver function imaging and repeating earthquake activity, Gondwana Research, 16, 3-4, 491--503, 2009.

Igarashi, T., T. Iidaka, T. Iwasaki, T. Shibutani, T. Ueno, and Japanese University Group, Crust and uppermost mantle structure beneath central Japan inferred from receiver function analysis, Earth Planets Space, 61, 11, 1215--1221, 2009.

Igarashi, T., Spatial changes of inter-plate coupling inferred from sequences of small repeating earthquakes in Japan, Geophys. Res. Lett., 37, L20304, doi:10.1029/2010GL044609, , 2010.

五十嵐　俊博・飯高　隆・宮林　佐和子, レシーバ関数解析から推定された日本列島の地殻構造, 地震2, 63, 3, 139--151, 2011.

Kato, A., K. Obara, T. Igarashi, H. Tsuruoka, S. Nakagawa, and N. Hirata, Propagation of slow slip leading up to the 2011 Mw9.0 Tohoku-oki earthquake, Science, 335, 705--708, 2012.

Kato, A. and T. Igarashi, Regional extent of the large coseismic slip zone of the 2011 Mw 9.0 Tohoku-Oki Earthquake delineated by on-fault aftershocks, Geophys. Res. Lett., 39, doi:10.1029/2012GL052220, , 2012.

Aitaro Kato, Toshihiro Igarashi, and Kazushige Obara, Detection of a hidden Boso slow slip event immediately after the 2011 Mw 9.0 Tohoku-Oki earthquake, Japan, Geophys. Res. Lett., 41, doi:10.1002/2014GL061053, , 2014.

Sawako Kinoshita, Toshihiro Igarashi, Yosuke Aoki, Minoru Takeo, Imaging crust and upper mantle beneath Mt. Fuji, Japan, by receiver functions, J. Geophys. Res., 120, 5, doi:10.1002/2014JB011522, , 2015.