Evidence of a transient aseismic slip driving the 2017 Valparaiso earthquake sequence, from foreshocks to aftershocks

L Moutote, Y Itoh, O Lengliné… - … Research: Solid Earth, 2023 - Wiley Online Library
Following laboratory experiments and friction theory, slow slip events and seismicity rate
accelerations observed before mainshocks are sometimes interpreted as evidence of a …

Interplate coupling and seismic potential in the Atacama Seismic Gap (Chile): Dismissing a rigid Andean sliver

V Yáñez‐Cuadra, F Ortega‐Culaciati… - Geophysical …, 2022 - Wiley Online Library
Geodetically constrained interseismic interplate coupling has been widely used to assess
seismic potential in subduction zones. Modeling interseismic deformation is challenging, as …

Microseismicity appears to outline highly coupled regions on the Central Chile megathrust

C Sippl, M Moreno, R Benavente - Journal of Geophysical …, 2021 - Wiley Online Library
We compiled a novel microseismicity catalog for the Central Chile megathrust (29°–35° S),
comprising 8,750 earthquakes between April 2014 and December 2018. These events …

Relation between oceanic plate structure, patterns of interplate locking and microseismicity in the 1922 Atacama seismic gap

D González‐Vidal, M Moreno, C Sippl… - Geophysical …, 2023 - Wiley Online Library
We deployed a dense geodetic and seismological network in the Atacama seismic gap in
Chile. We derive a microseismicity catalog of> 30,000 events, time series from 70 GNSS …

Afterslip of the Mw 8.3 2015 Illapel Earthquake Imaged Through a Time‐Dependent Inversion of Continuous and Survey GNSS Data

R Tissandier, JM Nocquet, E Klein… - Journal of …, 2023 - Wiley Online Library
We use continuous and survey GNSS data to image the spatial and temporal evolution of
afterslip during the 2 months following the Mw 8.3 2015 Illapel earthquake. Our approach …

[HTML][HTML] A 20 year-long GNSS solution across South-America with focus in Chile

E Klein, C Vigny, JM Nocquet… - Bulletin de la Société …, 2022 - pubs.geoscienceworld.org
Over the last 3 decades, GPS measurements have been instrumental in quantifying tectonic
plates current motion and deformation. Complex patterns of deformation along the plate …

Along‐Dip Segmentation of the Slip Behavior and Rheology of the Copiapó Ridge Subducted in North‐Central Chile

F Pastén‐Araya, B Potin, K Azua… - Geophysical …, 2022 - Wiley Online Library
We studied the along‐dip influence of the Copiapó ridge subduction in the Atacama region,
North‐Central Chile by building a new seismicity catalog, including similar events and non …

Largest aftershock nucleation driven by afterslip during the 2014 Iquique sequence

Y Itoh, A Socquet, M Radiguet - Geophysical Research Letters, 2023 - Wiley Online Library
Various earthquake models predict that aseismic slip modulates the seismic rupture process
but actual observations of such seismic‐aseismic interaction are scarce. We analyze seismic …

Seismic and aseismic slip during the 2006 Copiapó swarm in North-Central Chile

J Ojeda, C Morales-Yáñez, G Ducret, S Ruiz… - Journal of South …, 2023 - Elsevier
Earthquake swarms commonly occur along the Chilean subduction zone, witnessing fast
seismic and slow aseismic slip behavior at the plate interface. However, the largest seismic …

Return of the Atacama deep Slow Slip Event: The 5-year recurrence confirmed by continuous GPS

E Klein, C Vigny, Z Duputel, D Zigone, L Rivera… - Physics of the Earth and …, 2023 - Elsevier
Four years ago, using survey GPS measurements, the first deep slow slip event (SSE) was
detected in Chile (near Copiapó, Atacama region), unrelated to any major earthquake. It was …