1. Observation of the Dynamics of Hydrothermal Activity in La Soufrière of Guadeloupe Volcano with Joint Muography, Gravimetry, Electrical Resistivity Tomography, Seismic and Temperature Monitoring
- Author
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Dominique Gibert, Jean Bremond d'Ars, Bruno Carlus, Sébastien Deroussi, Jean‐Christophe Ianigro, David E. Jessop, Kevin Jourde, Bruno Kergosien, Yves Le Gonidec, Nolwenn Lesparre, Jacques Marteau, Roberto Moretti, Florence Nicollin, Marina Rosas‐Carbajal, László Oláh, Hiroyuki K. M. Tanaka, Dezső Varga, Gibert, D., de Bremond d'Ars, J., Carlus, B., Deroussi, S., Ianigro, J. -C., Jessop, D. E., Jourde, K., Kergosien, B., Le Gonidec, Y., Lesparre, N., Marteau, J., Moretti, R., Nicollin, F., Rosas-Carbajal, M., Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), Géosciences Rennes (GR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique du Globe de Paris (IPGP (UMR_7154)), Institut national des sciences de l'Univers (INSU - CNRS)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), CEA Grenoble, Université de Strasbourg (UNISTRA), László Oláh, Hiroyuki K. M, and Tanaka Dezső Varga
- Subjects
Gravimetry ,Fumerole temperature ,[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] ,Geophysical method ,[SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology ,Electrical resistivity tomography ,Seismic monitoring ,Volcanic hydrothermal systems ,Muon tomography - Abstract
International audience; Muography uses muons contained in the natural cosmic rays to determine the density of rock volumes. The measurements consist of counting the muons emerging from the target to determine the screening effect produced by the rock. Since the larger the rock thickness, the smaller the number of muons able to cross, the time resolution that can be achieved by muography to monitor density changes is on the order of one or two weeks for kilometer-sized volcanoes. This limitation of the method can be reduced by joining muography with high time-resolution measurements like passive seismic monitoring. In the case of structural imaging, muography benefits from the fact that muon trajectories are linear, making the tomography problem simpler than for other geophysical techniques like electrical resistivity tomography. Experiments performed on La Soufrière of Guadeloupe volcano are described to show how muography can be used to contribute to structural imaging of a highly heterogeneous lava dome and to detect abrupt transient hydrothermal phenomena likely to produce dangerous explosive events.
- Published
- 2022
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