Structure and Composition of the Plate-Boundary Slip Zone for the 2011 Tohoku-Oki Earthquake

被引：205

作者：

Chester, Frederick M. ^{[1
]}

Rowe, Christie ^{[2
]}

Ujiie, Kohtaro ^{[3
,4
]}

Kirkpatrick, James ^{[5
]}

Regalla, Christine ^{[6
]}

Remitti, Francesca ^{[7
]}

Moore, J. Casey ^{[8
]}

Toy, Virginia ^{[9
]}

Wolfson-Schwehr, Monica ^{[10
]}

Bose, Santanu ^{[11
]}

Kameda, Jun ^{[12
]}

Mori, James J. ^{[13
]}

Brodsky, Emily E. ^{[8
]}

Eguchi, Nobuhisa ^{[14
]}

Toczko, Sean ^{[14
]}

机构：

[1] Texas A&M Univ, Dept Geol & Geophys, Ctr Tectonophys, College Stn, TX 77843 USA

[2] McGill Univ, Dept Earth & Planetary Sci, Montreal, PQ, Canada

[3] Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki, Japan

[4] Japan Agcy Marine Earth Sci & Technol, Inst Res Earth Evolut, Yokosuka, Kanagawa 2370061, Japan

[5] Colorado State Univ, Dept Geosci, Ft Collins, CO 80523 USA

[6] Penn State Univ, Dept Geosci, University Pk, PA 16802 USA

[7] Univ Modena & Reggio Emilia Largo, Dipartimento Sci Terra, Modena, Italy

[8] Univ Calif Santa Cruz, Dept Earth & Planetary Sci, Santa Cruz, CA 95064 USA

[9] Univ Otago, Dept Geol, Dunedin, New Zealand

[10] Univ New Hampshire, Ctr Coastal & Ocean Mapping, Joint Hydrog Ctr, Durham, NH 03824 USA

[11] Univ Calcutta, Dept Geol, Kolkata, India

[12] Univ Tokyo, Dept Earth & Planetary Sci, Tokyo, Japan

[13] Kyoto Univ, Disaster Prevent Res Inst, Earthquake Hazards Div, Kyoto, Japan

[14] Japan Agcy Marine Earth Sci & Technol, Ctr Deep Earth Explorat, Yokohama, Kanagawa, Japan

来源：

SCIENCE | 2013年 / 342卷 / 6163期

关键词：

PACIFIC COAST; TRENCH AXIS; FAULT; STRESS; DECOLLEMENT; THICKNESS; FRICTION; RUPTURE; JAPAN; AREA;

D O I：

10.1126/science.1243719

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The mechanics of great subduction earthquakes are influenced by the frictional properties, structure, and composition of the plate-boundary fault. We present observations of the structure and composition of the shallow source fault of the 2011 Tohoku-Oki earthquake and tsunami from boreholes drilled by the Integrated Ocean Drilling Program Expedition 343 and 343T. Logging-while-drilling and core-sample observations show a single major plate-boundary fault accommodated the large slip of the Tohoku-Oki earthquake rupture, as well as nearly all the cumulative interplate motion at the drill site. The localization of deformation onto a limited thickness (less than 5 meters) of pelagic clay is the defining characteristic of the shallow earthquake fault, suggesting that the pelagic clay may be a regionally important control on tsunamigenic earthquakes.

引用

页码：1208 / 1211

页数：4

共 30 条

[1] A rupture model of the 2011 off the Pacific coast of Tohoku Earthquake [J].

Ammon, Charles J. ;

Lay, Thorne ;

Kanamori, Hiroo ;

Cleveland, Michael .

EARTH PLANETS AND SPACE, 2011, 63 (07) :693-696

[2]

[Anonymous], 2013, P IODP

[3] Ultracataclasite structure and friction processes of the Punchbowl fault, San Andreas system, California [J].

Chester, FM ;

Chester, JS .

TECTONOPHYSICS, 1998, 295 (1-2) :199-221

[4] Contrasting Decollement and Prism Properties over the Sumatra 2004-2005 Earthquake Rupture Boundary [J].

Dean, Simon M. ;

McNeill, Lisa C. ;

Henstock, Timothy J. ;

Bull, Jonathan M. ;

Gulick, Sean P. S. ;

Austin, James A., Jr. ;

Bangs, Nathan L. B. ;

Djajadihardja, Yusuf S. ;

Permana, Haryadi .

SCIENCE, 2010, 329 (5988) :207-210

[5] Geologically current plate motions [J].

DeMets, Charles ;

Gordon, Richard G. ;

Argus, Donald F. .

GEOPHYSICAL JOURNAL INTERNATIONAL, 2010, 181 (01) :1-80

[6] Tsunami source of the 2011 off the Pacific coast of Tohoku Earthquake [J].

Fujii, Yushiro ;

Satake, Kenji ;

Sakai, Shin'ichi ;

Shinohara, Masanao ;

Kanazawa, Toshihiko .

EARTH PLANETS AND SPACE, 2011, 63 (07) :815-820

[7] The 2011 Tohoku-Oki Earthquake: Displacement Reaching the Trench Axis [J].

Fujiwara, Toshiya ;

Kodaira, Shuichi ;

No, Tetsuo ;

Kaiho, Yuka ;

Takahashi, Narumi ;

Kaneda, Yoshiyuki .

SCIENCE, 2011, 334 (6060) :1240-1240

[8] Low Coseismic Friction on the Tohoku-Oki Fault Determined from Temperature Measurements [J].

Fulton, P. M. ;

Brodsky, E. E. ;

Kano, Y. ;

Mori, J. ;

Chester, F. ;

Ishikawa, T. ;

Harris, R. N. ;

Lin, W. ;

Eguchi, N. ;

Toczko, S. .

SCIENCE, 2013, 342 (6163) :1214-1217

[9] Nearly complete stress drop in the 2011 Mw 9.0 off the Pacific coast of Tohoku Earthquake [J].

Hasegawa, Akira ;

Yoshida, Keisuke ;

Okada, Tomomi .

EARTH PLANETS AND SPACE, 2011, 63 (07) :703-707

[10]

Horn D.R., 1970, Geological Investigations of the North Pacific. Geol. Soc. Am. Mem, V126, P1, DOI DOI 10.1130/MEM126-P1

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