Oblique, High-Angle, Listric-Reverse Faulting and Associated Development of Strain: The Wenchuan Earthquake of May 12, 2008, Sichuan, China

Annual Review of Earth and Planetary Sciences - Tập 38 Số 1 - Trang 353-382 - 2010
Peizhen Zhang1, Xueze Wen2, Zheng‐Kang Shen1, Jiuhui Chen1
1State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing, 100029, China
2Sichuan Seismological Bureau, Chengdu 610041, China;

Tóm tắt

The 2008 Wenchuan earthquake occurred on imbricate, oblique, steeply dipping, slowly slipping, listric-reverse faults. Measurements of coseismic slip, the distribution of aftershocks, and fault-plane solution of the mainshock all confirm this style of deformation and indicate cascading earthquake rupture of multiple segments, each with coseismic slip occurring in the shallow crust above a depth range of 10 to 12 km. Interactions among three geological units—eastern Tibet, the Longmen Shan, and the Sichuan basin—caused slow strain accumulation in the Longmen Shan so that measurable preearthquake slip was minor. Coseismic deformation, however, took place mostly within the interseismically locked Longmen Shan fault zone. The earthquake may have initiated from slip on a fault plane dipping 30–40° northwest in a depth range from 15 to 20 km and triggered oblique slip on the high-angle faults at depths shallower than 15 km to form the great Wenchuan earthquake.

Từ khóa


Tài liệu tham khảo

10.1126/science.1112260

Avouac JP, 2003, Adv. Geophys., 46, 80

10.1126/science.1062584

10.1029/2003JB002911

10.1080/00206819509465424

10.1130/GSATG18A.1

10.1130/0091-7613(2002)030<0935:ADOTIB>2.0.CO;2

CENC (China Earthquake Networks Center). 2008.http://www.csi.ac.cn/sichuan/index080512001.htm

10.1785/0120060184

10.1002/cjg2.1359

10.1016/0191-8141(95)00096-V

10.1029/2000JB900092

Chen Zh, 2005, Acta Geol. Sinica, 16, 404

10.1111/j.1365-246X.2005.02580.x

10.1130/0091-7613(2000)028<1143:OAOMCL>2.3.CO;2

10.1029/2006TC001987

Dietz LD, 1997, U.S. Geol. Surv. Prof. Pap., 150, 5

Global Centroid-Moment-Tensor (CMT) Project,http://www.globalcmt.org/

Hartzell SH, 1983, Bull. Seismol. Soc. Am., 73, 1553, 10.1785/BSSA07306A1553

Hatzfeld D, 1997, Bull. Seismol. Soc. Am., 87, 463, 10.1785/BSSA0870020463

10.1785/0120000920

10.1785/0120040167

10.1038/nature07837

10.1029/2005JB004120

Ji C. 2008.Preliminary result of the May 12, 2008 Mw 7.97 ShiChuan earthquake.http://www.geol.ucsb.edu/faculty/ji/big_earthquakes/2008/05/12/ShiChuan.html

10.1306/03230605076

Kanamori H, 1975, Bull. Seismol. Soc. Am., 65, 1073

10.1130/0091-7613(1997)025<0179:GMOCMI>2.3.CO;2

10.1029/2000TC001246

10.1038/ngeo265

10.1029/2004JB003309

10.1126/science.1066195

10.1029/1999JB900292

10.1126/science.1104804

10.1126/science.1112250

10.1029/2008TC002302

Li H, 2008, Acta Geol. Sinica, 82, 1623

Li SL, Lai XL, Yao ZX, Yang Q. 2009. Fault zone structures of northern and southern portions of the main central fault generated by the 2008 Wenchuan earthquake using fault zone trapped waves.Earthq. Sci.22(4):417–24

10.1007/s11589-005-0005-0

10.1785/gssrl.79.6.844

10.1029/94JB00464

10.1785/0120050803

Li YG, 1990, Bull. Seismol. Soc. Am., 80, 1245, 10.1785/BSSA0800051245

10.1785/0120000909

Liu J, 2008, Acta Geol. Sinica, 82, 1707

Liu Q, 2009, Chin. J. Geophys., 52, 309

10.1146/annurev.earth.031208.100212

Mendoza C, 1988, Bull. Seismol. Soc. Am., 78, 1438, 10.1785/BSSA0780031092

Nishimura N, Yagi Y. 2008.Rupture process for May 12, 2008 Sichuan earthquake (preliminary result).http://www.geol.tsukuba.ac.jp/~nisimura/20080512/

10.1111/j.1365-246X.1983.tb03335.x

Ran Y, 2008, Seismol. Geol., 30, 630

Ran Y, 2010, Chin. Sci. Bull., 54

10.1126/science.276.5313.788

10.1126/science.1155371

10.1002/cjg2.1406

10.1029/2004JB003421

10.1038/ngeo636

10.1146/annurev.ea.14.050186.001053

10.1016/0191-8141(89)90032-1

10.1126/science.260.5105.171

Sun J, 2008, Seismol. Geol., 30, 489

10.1785/0120050825

10.1785/0120000006

10.1029/2005JB003873

10.1111/j.1365-246X.2009.04049.x

Wang E, 2008, Sci. China Ser. D, 38, 1221

Wang W, 2008, Chin. J. Geophys., 51, 1403

Working Group of the Crustal Motion Observation Network of China Project, 2008, Sci. China Ser. D, 38, 1195

10.1016/j.pepi.2007.09.002

Xu X, 2008, Seismol. Geol., 30, 597

10.1130/G25462A.1

Xu Z. 2009.Wenchuan Fault Scientific Drilling Program (WFSD).http://www.wfsd.org/

10.18814/epiiugs/2008/v31i3/002

10.1111/j.1365-246X.2007.03696.x

Yeats RS, Sieh K, Allen CR. 1997.The Geology of Earthquakes. Oxford Univ. Press. 576 pp.

10.1016/0033-5894(88)90020-8

10.1016/0191-8141(91)90064-P

Zhang PZ, 2003, Sci. China Ser. D, 33, 13, 10.1360/03dz0002

10.1130/G20554.1

Zhang PZ, 2008, Chin. J. Geophys., 51, 1066

Zhang PZ, 2008, Sci. China Ser. D, 38, 1041

Zhang PZ, 2009, Chin. Sci. Bull., 54, 944, 10.1360/csb2009-54-7-944

10.1007/s11430-008-0148-7

10.1002/cjg2.1358

10.1007/s11430-009-0074-3

10.1111/j.1755-6724.2007.tb00983.x

Zhu J, 2008, J. Chengdu Univ. Technol., 35, 348

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Annual Review of Earth and Planetary Sciences

Tập 38 Số 1

353-382

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