Stress state in the largest displacement area of the 2011 Tohoku-Oki earthquake

Weiren Lin, Marianne Conin, J. Casey Moore, Frederick M. Chester, Yasuyuki Nakamura, James J. Mori, Louise Anderson, Emily E. Brodsky, Nobuhisa Eguchi, Becky Cook, Tamara Jeppson, Monica Wolfson-Schwehr, Yoshinori Sanada, Saneatsu Saito, Yukari Kido, Takehiro Hirose, Jan H. Behrmann, Matt Ikari, Kohtaro Ujiie, Christie RoweJames Kirkpatrick, Santanu Bose, Christine Regalla, Francesca Remitti, Virginia Toy, Patrick Fulton, Toshiaki Mishima, Tao Yang, Tianhaozhe Sun, Tsuyoshi Ishikawa, James C Sample, Ken Takai, Jun Kameda, Sean Toczko, Lena Maeda, Shuichi Kodaira, Ryota Hino, Demian Saffer

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Abstract

The 2011 moment magnitude 9.0 Tohoku-Oki earthquake produced a maximum coseismic slip of more than 50 meters near the Japan trench, which could result in a completely reduced stress state in the region. We tested this hypothesis by determining the in situ stress state of the frontal prism from boreholes drilled by the Integrated Ocean Drilling Program approximately 1 year after the earthquake and by inferring the pre-earthquake stress state. On the basis of the horizontal stress orientations and magnitudes estimated from borehole breakouts and the increase in coseismic displacement during propagation of the rupture to the trench axis, in situ horizontal stress decreased during the earthquake. The stress change suggests an active slip of the frontal plate interface, which is consistent with coseismic fault weakening and a nearly total stress drop.

Original languageEnglish (US)
Pages (from-to)687-690
Number of pages4
JournalScience
Volume339
Issue number6120
DOIs
StatePublished - Feb 8 2013

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Earthquakes
Oceans and Seas
Rupture
Japan

ASJC Scopus subject areas

  • General

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Lin, W., Conin, M., Moore, J. C., Chester, F. M., Nakamura, Y., Mori, J. J., ... Saffer, D. (2013). Stress state in the largest displacement area of the 2011 Tohoku-Oki earthquake. Science, 339(6120), 687-690. https://doi.org/10.1126/science.1229379

Stress state in the largest displacement area of the 2011 Tohoku-Oki earthquake. / Lin, Weiren; Conin, Marianne; Moore, J. Casey; Chester, Frederick M.; Nakamura, Yasuyuki; Mori, James J.; Anderson, Louise; Brodsky, Emily E.; Eguchi, Nobuhisa; Cook, Becky; Jeppson, Tamara; Wolfson-Schwehr, Monica; Sanada, Yoshinori; Saito, Saneatsu; Kido, Yukari; Hirose, Takehiro; Behrmann, Jan H.; Ikari, Matt; Ujiie, Kohtaro; Rowe, Christie; Kirkpatrick, James; Bose, Santanu; Regalla, Christine; Remitti, Francesca; Toy, Virginia; Fulton, Patrick; Mishima, Toshiaki; Yang, Tao; Sun, Tianhaozhe; Ishikawa, Tsuyoshi; Sample, James C; Takai, Ken; Kameda, Jun; Toczko, Sean; Maeda, Lena; Kodaira, Shuichi; Hino, Ryota; Saffer, Demian.

In: Science, Vol. 339, No. 6120, 08.02.2013, p. 687-690.

Research output: Contribution to journalArticle

Lin, W, Conin, M, Moore, JC, Chester, FM, Nakamura, Y, Mori, JJ, Anderson, L, Brodsky, EE, Eguchi, N, Cook, B, Jeppson, T, Wolfson-Schwehr, M, Sanada, Y, Saito, S, Kido, Y, Hirose, T, Behrmann, JH, Ikari, M, Ujiie, K, Rowe, C, Kirkpatrick, J, Bose, S, Regalla, C, Remitti, F, Toy, V, Fulton, P, Mishima, T, Yang, T, Sun, T, Ishikawa, T, Sample, JC, Takai, K, Kameda, J, Toczko, S, Maeda, L, Kodaira, S, Hino, R & Saffer, D 2013, 'Stress state in the largest displacement area of the 2011 Tohoku-Oki earthquake', Science, vol. 339, no. 6120, pp. 687-690. https://doi.org/10.1126/science.1229379
Lin W, Conin M, Moore JC, Chester FM, Nakamura Y, Mori JJ et al. Stress state in the largest displacement area of the 2011 Tohoku-Oki earthquake. Science. 2013 Feb 8;339(6120):687-690. https://doi.org/10.1126/science.1229379
Lin, Weiren ; Conin, Marianne ; Moore, J. Casey ; Chester, Frederick M. ; Nakamura, Yasuyuki ; Mori, James J. ; Anderson, Louise ; Brodsky, Emily E. ; Eguchi, Nobuhisa ; Cook, Becky ; Jeppson, Tamara ; Wolfson-Schwehr, Monica ; Sanada, Yoshinori ; Saito, Saneatsu ; Kido, Yukari ; Hirose, Takehiro ; Behrmann, Jan H. ; Ikari, Matt ; Ujiie, Kohtaro ; Rowe, Christie ; Kirkpatrick, James ; Bose, Santanu ; Regalla, Christine ; Remitti, Francesca ; Toy, Virginia ; Fulton, Patrick ; Mishima, Toshiaki ; Yang, Tao ; Sun, Tianhaozhe ; Ishikawa, Tsuyoshi ; Sample, James C ; Takai, Ken ; Kameda, Jun ; Toczko, Sean ; Maeda, Lena ; Kodaira, Shuichi ; Hino, Ryota ; Saffer, Demian. / Stress state in the largest displacement area of the 2011 Tohoku-Oki earthquake. In: Science. 2013 ; Vol. 339, No. 6120. pp. 687-690.
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AU - Sample, James C

AU - Takai, Ken

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