Seismic tremor reveals active trans-crustal magmatic system beneath Kamchatka volcanoes

• Published in: Science Advances
• Main Authors: Journeau, Cyril, Shapiro, Nikolai, Seydoux, Léonard, Soubestre, Jean, Koulakov, Ivan, Jakovlev, Andrei, Abkadyrov, Ilyas, Gordeev, Evgeny, Chebrov, Danila, Droznin, Dmitry, Sens-Schönfelder, Christoph, Luehr, Birger, Tong, Francis, Farge, Gaspard, Jaupart, Claude
• Other Authors: Institut des Sciences de la Terre (ISTerre), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Gustave Eiffel-Université Grenoble Alpes (UGA), 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)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2022
• Subjects: [SDU.STU]Sciences of the Universe [physics]/Earth Sciences; Kamchatka
• Online Access: https://hal.science/hal-03612905; https://hal.science/hal-03612905/document; https://hal.science/hal-03612905/file/sciadv.abj1571.pdf; https://doi.org/10.1126/sciadv.abj1571

International audience The occurrence and the style of volcanic eruptions are largely controlled by the ways in which magma is stored and transported from the mantle to the surface through the crust. Nevertheless, our understanding of the deep roots of volcano-magmatic systems remains very limited. Here, we use the sources of seismovolcanic tremor to delineate the active part of the magmatic system beneath the Klyuchevskoy Volcanic Group in Kamchatka, Russia. The tremor sources are distributed in a wide spatial region over the whole range of crustal depths connecting different volcanoes of the group. The tremor activity is characterized by rapid vertical and lateral migrations explained by fast pressure transients and dynamic permeability. Our results support the conceptual model of extended and highly dynamic trans-crustal magmatic systems.