Geodynamics

Alexis Gauthier

Alexis is a PhD student at ISTeP, the geosciences laboratory of Sorbonne University in Paris. He uses numerical simulations to better understand the effects of long-term deformation on the seismic cycle of subduction zones.

Introducing the new blog team!

Jean-Baptiste Koehl and Alexis Gauthier June 24, 2026

Happy 9th anniversary to EGU's Geodynamics Blog! (Illustration by Lea Pennacchioni)

Hello blog readers! It’s Jean-Baptiste and Alexis. With EGU26 now behind us and summer approaching fast, we wanted to announce the start of the 9th blogging season for the Geodynamics division and introduce the team for the 2026–2027 year. We both have the privilege and the daunting challenge of succeeding Constanza and Michael as Editors-in-Chief of the Geodynamics Blog. Over the past three years ...[Read More]

H2 production associated with mantle wedge hydration in subduction zones

Alexis Gauthier and edited by Betti Hegyi February 14, 2024

Zoom in the H2 production zone. (Image credit: Alexis Gauthier)

Dihydrogen (H2) is a promising source of energy that may allow reducing carbon emissions in industry and transportation. Artificial production methods have been explored, natural sources of H2 (also called white dihydrogen) offer a more eco-friendly and cost-effective production process. In this week’s blog post, Alexis Gauthier, a PhD student from ISTeP, France, is discussing the H2 production pr ...[Read More]