Baptiste Gombert

PhD student

Contact information:

Email: gombert@unistra.fr 
Telephone: +33 (0)3 68 85 00 90
Address:
Office 404 
5 rue René Descartes
67084 Strasbourg Cedex
France
Twitter: @BaptisteGomb

 


Research interests

  • Bayesian sampling

I use state of art Markov Chain Monte Carlo (MCMC) sampling methods to investigate co-seismic slip distribution of large earthquakes. Our sampling scheme takes advantages of the Graphic Card Units (GPUs) performances to tackle the massively parrallel nature of MCMC sampling.  

  • Static co-seismic slip inversion of the 1992 Landers Earthquake and fault damage-zone

The Mw = 7.3 Landers Earthquake is a widely-studied Southern Californian Earthquake. My work consists of obtaining a stochastic solution of the static co-seismic slip distribution on the numerous faults that ruptured. We analyze this result through the prism of Shallow Slip Deficit observed for this earthquake (and many other strike-slip earthquakes). In particular, we investigate the effect a fault damage-zone has on the inferred slip distribution.

  • Kinematic slip distribution and strain budget of the 2016 Pedernales Earthquake

A Mw = 7.8 Earthquake struck Ecuador on April 16th 2016. Using Bayesian sampling methods, I explore the rupture process using geodetical dataset and strong-motion observations. Using a stochastic coupling model on the subduction interface, we investigate the strain budget on the Ecuadorian subduction margin.

  •  Kinematic slip distribution of the 2017 Chiapas Earthquake

 On September 8th, 2017, a powerful Mw = 8.1 earthquake struck the South coast of Mexico. This event rose seismologists eyebrows because of its unusual normal-faulting mechanism in an active subduction zone. Much like the 2016 Pedernales earthquake, I'm using MCMC sampling methods and an extensive geodetical and seismological dataset to shed some light on this event.

Publications

Submitted / in review:

Accepted:

  • B. Gombert, Z. Duputel, R. Jolivet, C. Doubre, L. Rivera and M. Simons. Revisiting the 1992 Landers earthquake: a Bayesian exploration of co-seismic slip and off-fault damage. Geophys. J. Int. (2017)
    preprint    doi

Conference presentations

- Revisiting the 1992 Landers earthquake: a Bayesian exploration of co-seismic slip and off-fault damage (talk). B. Gombert, Z. Duputel, R. Jolivet, C. Doubre, L. Rivera and M. Simons. EGU General Assembly 23-28 April 2017, Vienna, Austria.

 - A Bayesian analysis of the 2016 Pedernales (Ecuador) earthquake (poster). Baptiste Gombert, Zacharie Duputel, Romain Jolivet, Luis Rivera, Mark Simons, Junle Jiang, Cunren Liang, and Eric Fielding. EGU General Assembly 23-28 April 2017, Vienna, Austria.

 - A bayesian exploration of the 1992 Landers earthquake (poster). B. Gombert, Z. Duputel, R. Jolivet, C. Doubre, L. Rivera and M. Simons. AGU Fall Meeting 12 - 16 December 2016, San Francisco, USA

Teaching

During the 2016 - 2017 school year, I was the teaching assistant for the following courses: 

- Scientific programming in Python and Matlab - 1st year EOST students.

- Mathematics applied to Geophysics  - 1st year EOST students.

CV

My resume can be downloaded in french and in english