Triggering of the 2014 Mw7.3 Papanoa earthquake by a slow slip event in Guerrero, Mexico

摘要: Since their discovery two decades ago, slow slip events have been shown to play an important role in accommodating strain subduction zones. However, the physical mechanisms that generate and relationships with earthquakes are unclear. Slow recorded Guerrero segment of Cocos–North America zone. Here we use inversion position time series by a continuous GPS network reconstruct evolution aseismic on interface segment. We find event began February 2014, months before magnitude (M_w) 7.3 Papanoa earthquake 18 April. The initiated region adjacent hypocentre extended into vicinity seismogenic This spatio-temporal proximity strongly suggests was triggered ongoing event. demonstrate triggering mechanism could be either static stress increases hypocentral region, as revealed Coulomb modelling, or enhanced weakening area slip. also show plate is highly coupled between events, most accumulated released aseismically during episodes.