Théa Ragon bio photo

Théa Ragon

Postdoc at Caltech - Earthquakes, faults and inverse problems


I am Chargée de recherche CNRS at the Institut des Sciences de la Terre (ISTerre) in Grenoble. I was previously a Postdoctoral Fellow at the California Institute of Technology, and completed my PhD at Géoazur.

My research aims at better understanding the deformation of the shallow parts of the Earth on multiple temporal and spatial scales, from the displacement induced a few seconds to days before, during and after an earthquake to the long-term interaction of fault networks.

You can find me in my office in the ISTerre building:
Office 316
OSUG-C (Maison des Géosciences)
1381, rue de la Piscine | 38610 Gières | France

You can also reach me via:
thea.ragon (at)

I am always looking for students and postdocs. If you are interested in earthquakes, want to work with me or a member of the team, and visit Grenoble, contact me!

Latest News

  • February 2023: I will give a seminar at ISTerre, Grenoble

  • December 2023: I won’t be at AGU, but co-convened with Elisa Tinti, Alice Gabriel, Yoshihiro Kaneko and Luca dal Zilio, the session S008: “Data-Informed Earthquake Modeling”. Leonid Pereiaslov and Tobias Köhne will present two posters about our work.

  • September 2023: Interested in the editorial workflow we designed for Seismica? Just check out our new article

  • July 2023: The second part of our work with Leah Langer on the impact of topography on slip models of subduction zones is out in JGR!

  • May 2023: Leah Langer gave a talk about our work on topography at the SSA Annual Meeting 2023

  • May 2023: I just gave a seminar at JPL, entitled Slip estimates in subduction zones: how critical are inaccuracies in the forward model ?

  • March 2023: Our paper on the secondary zone of uplift is out in GRL!