Explanipedia

3D finite-element mesh for modeling large-scale surface deformation induced by subduction megathrust earthquakes: Application to Chile Open

Hugo Boulze, Jean-Didier Garaud, Émilie Klein, Luce Fleitout, C. Vigny , et al. · 2025

Megaearthquakes (Mw > 8) cause continental-scale, long-lasting surface deformation, mainly due to viscoelastic relaxation of the asthenosphere. To investigate the links between this deformation and the slip history along subduction interfa…

Decoding inter-seismic deformation: Insights from viscoelastic modeling Open

Hugo Boulze, Luce Fleitout, Émilie Klein, C. Vigny · 2024

GPS positioning offers millimetric precision in measuring deformation of the lithosphere during the seismic cycle. In particular, during the post-seismic phase, long-lasting and large-scale deformation are measured. They result from the vi…

Cycle sismique de la subduction chilienne : méga-séismes, gap sismique et couplage Open

C. Vigny, Émilie Klein · 2023

Le Chili est un pays sismique. A cause de la convergence rapide entre deux grandes plaques tectoniques, beaucoup de séismes s’y produisent. En moyenne une fois par décennie l’un d’entre eux dépasse la magnitude 8. Les segments susceptibles…

Tectonic Evolution of a Sedimented Oceanic Transform Fault: The Owen Transform Fault, Indian Ocean Open

Alexandre Janin, Nicolas Chamot‐Rooke, Matthias Delescluse, Marc Fournier, Jean‐Arthur Olive , et al. · 2023

The Owen transform fault (OTF) connecting the Sheba and the Carlsberg spreading ridges in the Indian Ocean currently forms the active plate boundary between India and Somalia plates. This 330‐km‐long transform fault is by far the longest t…

Modeling surface deformations during the seismic cycle along the Chilean subduction zone Open

Hugo Boulze, Luce Fleitout, Émilie Klein, C. Vigny, Jean-Didier Garaud · 2023

Thanks to space geodesy we know with a millimetric precision how the lithosphere deforms at each stage of the seismic cycle. In particular, during the post-seismic phase, it can deform over thousands of kilometers and for decades. These de…

Is the Pampean flat-slab responsible for the differences in post-seismic motions between Maule and Illapel earthquakes? Open

Émilie Klein, Hugo Boulze, C. Vigny, Luce Fleitout, Jean-Didier Garaud · 2023

Ever since the Maule earthquake (Mw8.8, 2010), a quick vertical uplift is measured thanks to GNSS in the Andes, facing the rupture zone (~250 km to the trench). Models built for the Maule earthquake [Klein et al. 2016] have highlighted tha…

A Tsunami Generated by a Strike-Slip Event: Constraints From GPS and SAR Data on the 2018 Palu Earthquake Open

Wim Simons, Taco Broerse, Lin Shen, Nicolai Nijholt, O. Kleptsova , et al. · 2023

A devastating tsunami struck Palu Bay in the wake of the 28 September 2018 Mw = 7.5 Palu earthquake (Sulawesi, Indonesia). With a predominantly strike-slip mechanism, the question remains whether this unexpected tsunami was gener…

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

Javier Ojeda, Catalina Morales‐Yáñez, Gabriel Ducret, Sergio Ruiz, Raphaël Grandin , et al. · 2023

Afterslip of the <i>M</i><sub><i>w</i></sub> 8.3 2015 Illapel Earthquake Imaged Through a Time‐Dependent Inversion of Continuous and Survey GNSS Data Open

Roxane Tissandier, Jean‐Mathieu Nocquet, Émilie Klein, C. Vigny, Javier Ojeda , et al. · 2023

We use continuous and survey GNSS data to image the spatial and temporal evolution of afterslip during the 2 months following the M w 8.3 2015 Illapel earthquake. Our approach solves for the incremental daily slip at the subduction interfa…

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

Émilie Klein, C. Vigny, Zacharie Duputel, Dimitri Zigone, Luis Rivera , et al. · 2022

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 located between 40 and 60 km depth on the subduction interf…

Post-seismic motion after 3 Chilean megathrust earthquakes: a clue for a linear asthenospheric viscosity Open

Hugo Boulze, Luce Fleitout, Émilie Klein, C. Vigny · 2022

SUMMARY Over the last decade, three major subduction earthquakes, Maule Mw 8.8 (2010), Illapel Mw 8.3 (2015) and Iquique Mw 8.1 (2014), occurred in Chile and generated significant post-seismic deformations. These large scale and long lasti…

Afterslip of the Mw8.3 2015 Illapel earthquake imaged through a time-dependent inversion of continuous and survey GNSS data Open

Roxane Tissandier, Jean‐Mathieu Nocquet, Émilie Klein, C. Vigny, Javier Ojeda , et al. · 2022

Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Geophysical Research - Solid Earth. ESSOAr is a venue for early communication or feedback before peer review. Data may be pre…

Supershear shock front contribution to the tsunami from the 2018 <i>M</i>w 7.5 Palu, Indonesia earthquake Open

Faisal Amlani, Harsha S. Bhat, Wim Simons, Alexandre Schubnel, C. Vigny , et al. · 2022

SUMMARY Hazardous tsunamis are known to be generated predominantly at subduction zones. However, the 2018 Mw 7.5 Palu (Indonesia) earthquake on a strike-slip fault generated a tsunami that devastated the city of Palu. The mechanism by whic…

Comparison of horizontal post-seismic deformations induced by Maule, Iquique, and Illapel megathrust earthquakes: A clue to a linear asthenospheric viscosity? Open

Hugo Boulze, Luce Fleitout, Émilie Klein, C. Vigny · 2022

<p>Spatial geodesy through GNSS allows to measure with a millimetric precision the displacement of the lithosphere during the seismic cycle. The post-seismic part of this cycle can last for decades, traduced by long-lasting surface d…

A tsunami generated by a strike-slip event: constraints from GPS and SAR data on the 2018 Palu earthquake Open

Wim Simons, Taco Broerse, Lin Shen, O. Kleptsova, Nicolai Nijholt , et al. · 2022

Earth and Space Science Open Archive This preprint has been submitted to and is under consideration at Journal of Geophysical Research - Solid Earth. ESSOAr is a venue for early communication or feedback before peer review. Data may be pre…

A 20 year-long GNSS solution across South-America with focus in Chile Open

Émilie Klein, C. Vigny, Jean‐Mathieu Nocquet, Hugo Boulze · 2022

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 boundaries revealed heterogeneous coupling on the plates interf…

Supershear shock front contributions to the tsunami from the 2018 $\mathbf M_{\mathbf w}$ 7.5 Palu earthquake. Open

Faisal Amlani, Harsha S. Bhat, Wim Simons, Alexandre Schubnel, C. Vigny , et al. · 2021

Hazardous tsunamis are known to be generated predominantly at subduction zones by large earthquakes on dip (vertical)-slip faults. However, a moment magnitude ($\mathbf M_{\mathbf w}$) 7.5 earthquake on a strike (lateral)-slip fault in Sul…

Interplay of seismic and a-seismic deformation during the 2020 sequence of Atacama, Chile Open

Émilie Klein, Bertrand Potin, Francisco Pastén-Araya, Roxane Tissandier, Kellen Azúa , et al. · 2021

Interplay of seismic and a-seismic deformation during the 2020 sequence of Atacama, Chile. Open

Émilie Klein, Bertrand Potin, Francisco Pastén-Araya, Roxane Tissandier, Kellen Azúa , et al. · 2021

An earthquake sequence occurred in the Atacama region of Chile throughout September 2020. The sequence initiated by a mainshock of magnitude Mw6.9, followed 17 hours later by a Mw6.4 aftershock. The sequence lasted several weeks, during wh…

Supershear shock front contributions to the tsunami from the 2018 Mw 7.5 Palu earthquake Open

Faisal Amlani, Harsha S. Bhat, Wim Simons, Alexandre Schubnel, C. Vigny , et al. · 2021

Simulation data for the manuscript under review

Supershear shock front contributions to the tsunami from the 2018 Mw 7.5 Palu earthquake Open

Faisal Amlani, Harsha S. Bhat, Wim Simons, Alexandre Schubnel, C. Vigny , et al. · 2021

Simulation data for the manuscript under review

Active transpression along the Owen oceanic transform fault, India - Somalia plate boundary Open

Alexandre Janin, Mathieu Rodriguez, Nicolas Chamot‐Rooke, Alain Rabaute, Matthias Delescluse , et al. · 2021

<p>The Owen oceanic transform fault is a 300-km long linear structure connecting the Carlsberg and Sheba spreading centers in the northwest Indian Ocean. It presently forms with the Carlsberg ridge the active plate boundary between I…

The Mw 8.3 2015 Illapel afterslip imaged through a time-dependent inversion of continuous and survey GPS data Open

Roxane Tissandier, Jean‐Mathieu Nocquet, Émilie Klein, C. Vigny · 2021

<div> <div> <div> <p>The Mw 8.3 2015 Illapel earthquake ruptured a 190 km long segment of the Chilean subduction zone. In the past, this area ruptured several times through large and great earthquakes, the most rece…

Imaging the past and present Owen transform fault: preliminary results from the VARUNA seismic cruise Open

Alexandre Janin, Mathieu Rodriguez, Nicolas Chamot‐Rooke, Alain Rabaute, Matthias Delescluse , et al. · 2020

<p>The Owen transform fault in the northwest Indian Ocean is a >300 km-long active structure that constitutes the active plate boundary between Somalia and India. The first-order fault geometry was reached in the Early Miocene whe…

Geophysical investigation of the western end of the Carlsberg Ridge: preliminary results of the CARLMAG cruise Open

Nicolas Chamot‐Rooke, Alexandre Janin, Mathieu Rodriguez, Matthias Delescluse, J. Dyment , et al. · 2020

<p>A sizeable portion of oceanic lithosphere has been produced at the Carlsberg Ridge, one of the three major ridge branches that shaped the Indian Ocean. Accretion started in the Paleocene with the ultra-fast widening of the Arabian…

Supershear shock front contribution to the tsunami from the 2018 $\mathbf M_{\mathbf w}$ 7.5 Palu, Indonesia earthquake Open

Faisal Amlani, Harsha S. Bhat, Wim Simons, Alexandre Schubnel, C. Vigny , et al. · 2019

Hazardous tsunamis are known to be generated predominantly at subduction zones. However, the 2018 Mw 7.5 Sulawesi (Indonesia) earthquake on a strike-slip fault generated a tsunami that devastated the city of Palu. The mechanism by which th…

Deep Transient Slow Slip Detected by Survey GPS in the Region of Atacama, Chile Open

Émilie Klein, Zacharie Duputel, Dimitri Zigone, C. Vigny, Jean‐Paul Boy , et al. · 2018

We detected a long‐term transient deformation signal between 2014 and 2016 in the Atacama region (Chile) using survey Global Positioning System (GPS) observations. Over an ∼150 km along‐strike region, survey GPS measurements in 2014 and 20…

The Chilean GNSS Network: Current Status and Progress toward Early Warning Applications Open

Juan Carlos Báez, Felipe Leyton, Claudia Troncoso-Pantoja, Francisco del Campo, Michael Bevis , et al. · 2018

Chile is one of the world's most seismically active regions and is therefore extensively studied by the earthquake sciences. The great length of the country hosts a variety of measurement systems allowing for the characterization of earthq…

Bridging the gap between North and Central Chile: insight from new GPS data on coupling complexities and the Andean sliver motion Open

Émilie Klein, Marianne Métois, G. Meneses, C. Vigny, Arthur Delorme · 2018

International audience

A comprehensive analysis of the Illapel 2015 Mw8.3 earthquake from GPS and InSAR data Open

Émilie Klein, C. Vigny, Luce Fleitout, Raphaël Grandin, Romain Jolivet , et al. · 2017

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