Available presentations & posters > Session 2

Session 2. The seismic cycle: from transient and precursory deformation to seismic rupture

Conveners: M. Moreno, H. Perfettini, M. Radiguet, H. Ozener

In the last two decades, satellite measurements (Global Positioning System GPS and InSAR Interferometry) of surface deformation, in complement to seismology, have revealed the complexity and richness of the processes of strain accumulation and release during the seismic cycle. In particular, these data have characterized a variety of processes associated with earthquakes, from precursory activity to the early post-seismic relaxation period. Importantly, transient aseismic deformations have been shown to occur on faults in many tectonic settings, with varying spatial and temporal scales, providing constraints on the material properties and mechanics of seismogenic zones. Processes such as afterslip, slow slip events (SSE), apparent variations in fault coupling in space and time, play a major role in the seismic cycle. These aseismic processes are intimately linked with the seismicity: variations in seismicity rate, aftershocks, tectonic tremors, and triggering large earthquakes.

This session aims at improving our understanding of the complex dynamics of the seismic cycle with a special emphasis on the relation between seismic and aseismic slip. Fundamental questions such as the influence of aseismic slip on the nucleation of large earthquakes or reciprocally, the use of seismicity to characterize episodes of aseismic slip, are of particular importance. We are soliciting contributions that present new geodetic and/or seismic observations of transient phenomenon of the different phases of the seismic cycle (interseismic, postseismic, large earthquake rupture), as well as forward models developed to better understand the physical mechanisms and rheology of real fault zones, and the influence of aseismic processes in producing microseismicity to large earthquakes.

A discussion of the implication of the presented results for our global understanding of the seismic cycle is expected.


Keynote speaker

Jean-Paul Ampuero - California Institute of Technology (Caltech) - USA

Seismic cycle, stress concentration and the long-term weakness of faults


Detailed Oral Program

Tuesday 11th September

8:30AM - 10AM: Seismic / aseismic interractions  

The spectrum of slip behaviors emerging from the interactions between seismic and aseismic slip (invited)

Ampuero Jean Paul

History of seismic and aseismic slip along the central Ecuador subduction zone

Nocquet Jean-Mathieu

Constraints on Seismic and Aseismic Slip on the Cascadia Megathrust from geodesy and seismicity

Michel Sylvain

The Seismic Cycle and Strain Rates in the South Iceland Seismic Zone from GPS observations

Arnadottir Thora

Life in the stress shadow: Stress-constrained inversion for interseismic coupling on shallow megathrusts

Lindsey Eric 

10:30AM - 12:30PM: 

SSEs mechanisms

Episodic tremor and slip explained by fluid-enhanced microfracturing and sealing

Bernaudin Maxime

Examining the spectrum of a slow slip event in Cascadia: suggestions that a single fault zone process creates slow slip and tremor?

Hawthorne Jessica

Fluid-assisted healing of micro-cracks in fault damage zones

Yehya Alissar

Seismogenesis of dual subduction beneath Kanto, central Japan controlled by fluid release

Yoshioka Shoichi

Pre-EQ processes, EQ interractions

Earthquake Ruptures and Stress Changes in the Mexican Earthquake Sequence of 2017-2018

Fielding Eric

Observations of rapid large-scale slip/deformation of the slab before some large subduction earthquakes

Bouchon Michel

Periodic change in the interplate locking state off Kyushu Island, Southwest Japan, inferred from spatial gradient of displacement rate field and small repeating earthquakes

Iinuma Takeshi

A top-to-down migration of slip during the 2016 Kaikoura Earthquake

Saltogianni Vasso

Wednesday 12th September

8:30AM - 10AM:  Postseismic processes and aftershock studies

Role of lower crust in the post-seismic deformation of the 2010 Maule earthquake: Insights from a model with non-linear viscosity

Pena Carlos

Postseismic deformation following the 2010 Mw 8.8 Maule earthquake in Chile: implications for the rheology of the central Andean crust and upper mantle

Weiss Jonathan

Transient Forearc Sliver Transport Found During Postseismic Recovery

Hobbs Tiegan

Imaging early postseismic slip in the hours to days following the 2016 Mw 7.8 Pedernales earthquake: where does it occur relative to longer-term postseismic slip?

Tsang Louisa

Aftershocks of the 2016 Mw 7.8 Ecuador earthquake reveal earthquake cycle is controlled by long-lived structures

Agurto-Detzel Hans

Postseismic deformation following the april 25, 2015 gorkha earthquake: afterslip versus viscous relaxation

François Jouanne


List of posters

Micro-seismic monitoring of a shear deformation zone: a laboratory experiment

Cédric Lachaud, David Marsan, Maurine Montagnat, Jérôme Weiss

Using GPS measurements to solve tectonic behavior of western segment of the Makran Subduction Zone, Iran

Farokh Tavakoli, Andrea Walpersdorf, Fateme Khorrami, Seied Saadat, Hamid Nankali, Zahra Mousavi, Morteza Sedighi, Yahya Djamour

Aseismic slip preceding the 2017 earthquakes sequence in the Mexican subduction zone

Mathilde Radiguet, Jorge Jara, ekaterina Kazachkina, louise maubant, Nathalie Cotte, Vladimir Kostoglodov

Kinematic study of Iquique 2014 Mw 8.1 earthquake: understanding the segmentation of the seismogenic zone

Jorge Jara, Hugo Sanchez-Reyes, Anne Socquet, Fabrice Cotton, J Virieux, Andrei Maksymowicz, John Diaz-Mojica, Andrea Walpersdorf, Javier Ruiz, Nathalie Cotte, Edmundo Norabuena

Characterizing the long-term preparation phase of the 2014 North Chile Mw8.1 earthquake

Anne Socquet, Jorge Jara, Jesús Piña-Valdés, michel bouchon, David Marsan, Fabrice Cotton

Inversion of geodetic data: an original method applied to the interseismic deformation along the Northern Andes subduction zone Cancelled

Christel Marchica, Bernard Valette, Mathilde Radiguet

Post-seismic deformation after the 2016 Norcia earthquake (Italy) revealed by InSAR times series Cancelled

Lea Pousse-Beltran, Anne Socquet, Lucilla Benedetti, Marie-Pierre Doin, Magali Rizza, Nicola D'Agostino 

Long-Term Velocity Field for Mexico country

Nathalie Cotte, Vladimir Kostoglodov, Andrea Walpersdorf, ekaterina Kazachkina, Aline Deprez

Interseismic and coseismic deformation on the Philippine Fault (Leyte Island) resolved by InSAR

John Dale Dianala, Romain Jolivet, Marion Thomas, Barry Parsons, Richard Walker

Dual control of fault intersections on stop-start rupture in the 2016 Central Italy seismic sequence

Richard Walters, L. Gregory, L. Wedmore, Tim Craig, K. McCaffrey, M. Wilkinson, J. Chen, Z. Li, J. Elliott, H. Goodall, F. Iezzi, F. Livio, A. Michetti, G. Roberts, E. Vittori 

Where are the boundaries of the South Caspian Basin? Cancelled

Abdolreza Ghods, Farhad Sobouti, Khalil Motaghi, Esmaeel Shabanian

Interseismic Behavior of the Active Main Marmara Fault in Western Turkey

Zeynep Yılmaz, Ali Ozgün Konca, Semih Ergintav

Stochastic static fault slip inversion from geodetic data with non-negativity and bound constraints

Jean-Mathieu Nocquet

The 2013 Saravan intra-slab earthquake in the SE Iranian Makran subduction zone (Mw=7.7): precursor of a long awaited inter-plate event?

Fateme Khorrami, Andrea Walpersdorf, Zahra Mousavi, Mathilde Radiguet, Abdoreza Saadat, Farokh Tavakoli, Hamidreza Nankali, Yahya Djamour, Morteza Sedighi, James Hollingsworth

Fault interactions and synchronization: insight from the 1936-1997 NE Lut earthquake sequence

Mathilde Marchandon, Mathilde Vergnolle, Olivier Cavalié

A stochastic view on the strain budget of the Ecuador-Colombia subduction zone

Baptiste Gombert, Zacharie Duputel, Romain Jolivet, Mark Simons, Junle Jiang, Cunren Liang, Eric Fielding, Luis Rivera 

Temporal evolution of fault coupling associated with the occurrence of slow slip events in central Japan

Lucile Bruhat, Junichi Fukuda 

Inversion of the physical parameters that control the onset of postseismic slip

Cedric Twardzik, Mathilde Vergnolle, Louisa Tsang, Anthony Sladen

Shallow creep along the 1999 Izmit earthquake's rupture (Turkey) from high temporal resolution interferometric synthetic-aperture radar data (2011-2017)

Gokhan Aslan, Cécile Lasserre, Ziyadin Cakir, François Renard, Semih Ergintav 

Integrated study of the transient slow slip events beneath the Boso peninsula, Japan

Lou Marill, Anne SOCQUET, Baptiste Rousset, David Marsan, Aline Deprez

Snapshot of Heterogeneous Post-Seismic Deformation Following the 2016 Mw 7.8 Pedernales Earthquake, coastal Ecuador

Patricia A. Mothes, Frederique Rolandone, Jean-Mathieu Nocquet, Paúl Jarrín, Falk Amelung

Fault geometry and coseismic slip for the Balochistan Earthquake (2013, Mw7.7, Pakistan) inferred from SAR and optical data

Benjamin LAUER, Raphael Grandin, Yann KLINGER, Amaury Vallage, Romain Jolivet, Arthur Delorme

Analogue Geodetic Slip Inversion Technique (AGSIT): Monitoring time-dependent slip distribution along analogue subduction megathrusts

Ehsan Kosari, Matthias Rosenau, Jonathan Bedford, Michael Rudolf, Onno Oncken

The early postseismic slip (i.e., on the first day): A significant contribution to the postseismic slip budget

Cedric Twardzik, Mathilde Vergnolle, Anthony Sladen, Antonio Avallone

Source Model for the Mw 6.5, 29 March 2017 Kamchatka Peninsula Earthquake from InSAR geodetic technique

Magdalena Vassileva, Mahdi Motagh, Thomas Walter

The 5th April 2017 Sefid Sang earthquake (Mw 6) and its implication on the geodynamic of NE Iran

Mahtab Aflaki, Zahra Mousavi, Abdolreza Ghods, Esmaeil Shabanian, Sanaz Vajedian, Maryam Akbarzadeh

The 2017 Slow slip event in Guerrero Area (Mexico), seen by spatial geodesy

Louise Maubant, Erwan Pathier, Marie-Pierre Doin, Simon Daout, Mathilde Radiguet

Stastitical analysis for the next-earthquake distribution in terms of conditioned probabilities

Bogdan Felix Apostol, Luminita Ardeleanu, Stefan Balan

An Analysis of Strain Accumulation in Turkey

İlke Deniz

The 1999 Mw 7.6 Chi-Chi earthquake: Co-seismic study based on InSAR and GPS data

Marine Roger, Peter Clarke, Jyr-Ching Hu, Zhenhong Li

Evidence for aseismic slip driven by pore fluid pressure following the 2016 Kaikōura Earthquake

Ian Hamling, Phaedra Upton

Locking degree for the Chilean Subduction Zone inferred through Bayesian inversion of GPS observations: Implications for seismic hazard and earthquake mechanics

Marcos Moreno, Jan Bolte, Frederik Tilmann, Shaoyang Li, Christian Sippl, Daniel Melnick

Revisiting slow slip events occurrence in Boso Peninsula, Japan, combining GPS data and repeating earthquakes analysis

B. Gardonio, D. Marsan, A. Socquet, M. Bouchon, J. Jara, Q. Sun, N. Cotte, M. Campillo


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