The 2010 Mw 8.8 Maule Megathrust Earthquake of Central Chile, Monitored by GPS

被引：327

作者：

Vigny, C. ^{[1
]}

Socquet, A. ^{[2
,3
]}

Peyrat, S. ^{[4
]}

Ruegg, J-C ^{[2
,3
]}

Metois, M. ^{[1
,2
,3
]}

Madariaga, R. ^{[1
]}

Morvan, S. ^{[1
]}

Lancieri, M. ^{[1
]}

Lacassin, R. ^{[2
,3
]}

Campos, J. ^{[4
]}

Carrizo, D. ^{[5
]}

Bejar-Pizarro, M. ^{[2
,3
]}

Barrientos, S. ^{[4
,6
]}

Armijo, R. ^{[2
,3
]}

Aranda, C. ^{[6
]}

Valderas-Bermejo, M-C ^{[6
]}

Ortega, I. ^{[6
]}

Bondoux, F. ^{[7
]}

Baize, S. ^{[8
]}

Lyon-Caen, H. ^{[1
]}

Pavez, A.

Vilotte, J. P. ^{[2
,3
]}

Bevis, M. ^{[9
]}

Brooks, B. ^{[10
]}

Smalley, R. ^{[11
]}

Parra, H. ^{[12
]}

Baez, J-C ^{[13
]}

Blanco, M. ^{[14
]}

Cimbaro, S.

Kendrick, E. ^{[9
]}

机构：

[1] Ecole Normale Super, CNRS, UMR 8538, Geol Lab, Paris, France

[2] Inst Phys Globe, Paris, France

[3] Univ Paris Diderot Sorbonne Paris Cite, CNRS, UMR 7154, Paris, France

[4] Univ Chile, Dept Geofis, Santiago, Chile

[5] Univ Chile, Adv Min Technol Ctr, Santiago, Chile

[6] Univ Chile, Serv Sismol Nacl, Santiago, Chile

[7] Inst Rech & Dev, Lima, Peru

[8] Inst Radioprotect & Surete Nucl, Fontenay Aux Roses, France

[9] Ohio State Univ, Sch Earth Sci, Columbus, OH 43210 USA

[10] Univ Hawaii, Hawaii Inst Geophys & Planetol, Honolulu, HI 96822 USA

[11] Univ Memphis, Ctr Earthquake Res & Informat, Memphis, TN 38152 USA

[12] Inst Geog Mil, Santiago, Chile

[13] Univ Concepcion, Los Angeles, Chile

[14] Univ Nacl Cuyo, RA-5500 Mendoza, Argentina

来源：

SCIENCE | 2011年 / 332卷 / 6036期

基金：

美国国家科学基金会;

关键词：

INTERSEISMIC STRAIN ACCUMULATION; SOUTH-CENTRAL CHILE; SEISMIC GAP; SUBDUCTION ZONE; SLIP;

D O I：

10.1126/science.1204132

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：

Large earthquakes produce crustal deformation that can be quantified by geodetic measurements, allowing for the determination of the slip distribution on the fault. We used data from Global Positioning System (GPS) networks in Central Chile to infer the static deformation and the kinematics of the 2010 moment magnitude (M-w) 8.8 Maule megathrust earthquake. From elastic modeling, we found a total rupture length of similar to 500 kilometers where slip (up to 15 meters) concentrated on two main asperities situated on both sides of the epicenter. We found that rupture reached shallow depths, probably extending up to the trench. Resolvable afterslip occurred in regions of low coseismic slip. The low-frequency hypocenter is relocated 40 kilometers southwest of initial estimates. Rupture propagated bilaterally at about 3.1 kilometers per second, with possible but not fully resolved velocity variations.

引用

页码：1417 / 1421

页数：5

共 21 条

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