Chalumeau C. auteur aut IRD Agurto-Detzel H. auteur aut IRD De Barros L. auteur aut IRD Charvis Philippe auteur aut IRD Galve A. auteur aut IRD Rietbrock A. auteur aut IRD Alvarado A. auteur aut IRD Hernandez S. auteur aut IRD Beck S. auteur aut IRD Font Yvonne auteur aut IRD Hoskins M. C. auteur aut IRD Leon-Rios S. auteur aut IRD Meltzer A. auteur aut IRD Lynner C. auteur aut IRD Rolandone F. auteur aut IRD Nocquet Jean-Mathieu auteur aut IRD Régnier Marc auteur aut IRD Ruiz M. auteur aut IRD Soto-Cordero L. auteur aut IRD Vaca S. auteur aut IRD Segovia M. auteur aut IRD text journalArticle eng text/pdf reformatted digital access Repeating earthquakes repeatedly rupture the same seismic asperity and are strongly linked to aseismic slip. Here, we study the repeating aftershocks of the April 16, 2016 M-W 7.8 Pedernales earthquake in Ecuador, which generated a large amount of afterslip. Using temporary and permanent stations, we correlate waveforms from a one-year catalog of aftershocks. We sort events with a minimum correlation coefficient of 0.95 into preliminary families, which are then expanded using template-matching to include events from April 2015 to June 2017. In total, 376 repeaters are classified into 62 families of 4-15 events. They are relocated, first using manual picks, and then using a double difference method. We find repeating earthquakes during the whole period, occurring primarily within large aftershock clusters on the edges of the areas of largest afterslip release. Their recurrence times, shortened by the mainshock, subsequently increase following an Omori-type law, providing a timeframe for the afterslip's deceleration. Although they are linked temporally to the afterslip, repeater-derived estimates of slip differ significantly from GPS-based models. Combined with the fact that repeaters appear more spatially correlated with the afterslip gradient than with the afterslip maxima, we suggest that stress accumulation at the edge of the afterslip may guide repeater behavior. specialized afterslip cross correlation match filtering Pedernales repeating earthquakes subduction EQUATEUR PEDERNALES 066 064 126 5 e2021JB021746 [20 p.] 2021 2169-9313 https://www.documentation.ird.fr/hor/fdi:010082110 10.1029/2021jb021746 2169-9313 [F B010082110] https://www.documentation.ird.fr/hor/fdi:010082110 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2021-07/010082110.pdf IRD - Base Horizon / Pleins textes 2021-07-02 2025-02-24 fdi:010082110 fre