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