Spatio-temporal velocity variations observed during the pre-eruptive episode of La Palma 2021 eruption inferred from ambient noise interferometry

On Sept. 19th, 2021, a volcanic eruption began on the island of La Palma (Canary Islands, Spain). The pre-eruptive episode was characterized by seismicity and ground deformation that started only 9.5 days before the eruption. In this study, we applied seismic interferometry to the data recorded by s...

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Bibliographic Details
Published in:Scientific reports 2023-07, Vol.13 (1), p.12039-12039, Article 12039
Main Authors: Cabrera-Pérez, Iván, D’Auria, Luca, Soubestre, Jean, Przeor, Monika, Barrancos, José, García-Hernández, Rubén, Ibáñez, Jesús M., Koulakov, Ivan, van Dorth, David Martínez, Ortega, Víctor, Padilla, Germán D., Sagiya, Takeshi, Pérez, Nemesio
Format: Article
Language:English
Subjects:
704/2151/2809
704/2151/508
704/2151/598
Earthquakes
Eruptions
Humanities and Social Sciences
Interferometry
Lava
Magma
multidisciplinary
Science
Science (multidisciplinary)
Seismic activity
Velocity
Volcanic eruptions
Volcanoes
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Summary:On Sept. 19th, 2021, a volcanic eruption began on the island of La Palma (Canary Islands, Spain). The pre-eruptive episode was characterized by seismicity and ground deformation that started only 9.5 days before the eruption. In this study, we applied seismic interferometry to the data recorded by six broadband seismic stations, allowing us to estimate velocity variations during the weeks preceding the eruption. About 9.5 days before the eruption, we observed a reduction in the seismic velocities is registered next to the eruptive centers that opened later. Furthermore, this zone overlaps with the epicenters of a cluster of volcano-tectonic earthquakes located at shallow depth (
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-39237-9