TY - JOUR PY - 2011// TI - The 2010 Mw 8.8 Maule Mega-Thrust Earthquake of Central Chile, Monitored by GPS JO - Science A1 - Vigny, C. A1 - Socquet, A. A1 - Peyrat, S. A1 - Ruegg, J-c A1 - Métois, M. A1 - Madariaga, R. A1 - Morvan, S. A1 - Lancieri, M. A1 - Lacassin, R. A1 - Campos, J. A1 - Carrizo, D. A1 - Bejar-Pizarro, M. A1 - Barrientos, S. A1 - Armijo, R. A1 - Aranda, C. A1 - Valderas-Bermejo, M-c A1 - Ortega, I. A1 - Bondoux, F. A1 - Baize, S. A1 - Lyon-Caen, H. A1 - Pavez, A. A1 - Vilotte, J. P. A1 - Bevis, M. A1 - Brooks, B. A1 - Smalley, R. A1 - Parra, H. A1 - Baez, J-c A1 - Blanco, M. A1 - Cimbaro, S. A1 - Kendrick, E. SP - 1417 EP - 1421 VL - 332 IS - 6036 N2 - Large earthquakes produce crustal deformation that can be quantified by geodetic measurements, allowing for the determination of the slip distribution on the fault. We use data from Global Positioning System networks in Central Chile to infer the static deformation and the kinematics of the 2010 M(w) 8.8 Maule mega-thrust earthquake. From elastic modeling, we find a total rupture length of ~500 km where slip (up to 15 m) concentrated on two main asperities situated on both sides of the epicenter. We find 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 km southwest of initial estimates. Rupture propagated bilaterally at ~3.1 km/s, with possible but not fully resolved velocity variations.
Language: en
LA - en SN - 0036-8075 UR - http://dx.doi.org/10.1126/science.1204132 ID - ref1 ER -