Scientific response to the 2021–2022 seismic swarm in the Monts Dore volcanic province (France): dynamic insights from temporal surveys (2/2)
Year: 2025
Type: article
Abstract: During years 2021–2022, an unusual seismic swarm was recorded at crustal level beneath the Monts Dore volcanic province (France). Complementary field and remote measurements were performed. Together with the time series recorded on the seismological and GNSS national networks, these measurements were fundamental for monitoring the evolution of the seismic swarm and deciphering its origin. Although a potential vertical migration of the seismic events is suggested, the complementary measurements presumably discard the hypothesis of magma intrusion at shallow crustal level. The ascent of a CO 2 -rich fluid originating from the mantle might instead have reacted with the hydrothermal system beneath the Monts-Dore since at least the summer 2021 leading to the reactivation of pre-existing tectonic structures with known associated seismicity. Feedback on the management of the 2021–2022 seismic swarm prompts for several recommendations that should be considered in future to better face and address at the national level the issues raised at long-dormant volcanic provinces in mainland France.
Source: Comptes Rendus Géoscience
DOI: 10.5802/crgeos.285
Authors: Guillaume Boudoire, Lydie Gailler, Jean Battaglia, Aude Beauger, Martial Bontemps, Valérie Bosse, Vincent Breton, Danielle Briot, Philippe Cacault, Valérie Cayol, Nicolas Cluzel, Emmanuel Delage, Géraldine Del Campo, Catherine Deniel, Jean-Luc Devidal, Jean-Michel Douchain, Alexandre Faissal, Patrick Freville, Francesco Frondini, Pierre-Jean Gauthier, Nicola Genzano, Clément Grace, Fausto Grassa, Marc Grunberg, Yannick Guéhenneux, Lucia Gurioli, Andrew Harris, Philippe Labazuy, Didier Laporte, Manfredi Longo, Francesco Marchese, Gilles Mazet-Roux, Etienne Médard, Charley Merciecca, Marianne Métois, Nicola Pergola, Manon Pouget, Victoria Rafflin, Edouard Regis, Lisa Ricci, Andrea Luca Rizzo, Thierry Souriot, Luca Terray, Valerio Tramutoli, Cristina Trull-Hernandis, Benjamin van Wyk de Vries, Olivier Voldoire, Erwan Thebault
Institutions: Centre National de la Recherche Scientifique, Université Clermont Auvergne, Observatoire de Physique du Globe de Clermont-Ferrand, Laboratoire Magmas et Volcans, Institut de Recherche pour le Développement, INGV Sezione di Palermo, Laboratoire de Géographie Physique et Environnementale, Université de Limoges, Laboratoire de Physique de Clermont Auvergne, University of Perugia, Politecnico di Milano, École & Observatoire des Sciences de la Terre, Université de Strasbourg, CNR-IMIOT – Consiglio Nazionale delle Ricerche - Istituto di Metodologie Integrate per l’Osservazione della Terra, National Research Council, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA DAM Île-de-France, Lyon 1 Université, École Normale Supérieure de Lyon, Laboratoire de Géologie de Lyon : Terre, Planètes et Environnement, Université Jean Monnet, Université Jean Monnet, University of London, Royal Holloway University of London, Institute of Geosciences and Earth Resources, INGV Sezione di Milano, University of Milano-Bicocca, University of Basilicata, Universitat Politècnica de València
Language: English
Subfield: Geophysics
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4410097006