Magma pressure discharge induces very long period seismicity.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
08 Oct 2021
08 Oct 2021
Historique:
received:
12
05
2021
accepted:
17
09
2021
entrez:
9
10
2021
pubmed:
10
10
2021
medline:
10
10
2021
Statut:
epublish
Résumé
Volcano seismicity is one of the key parameters to understand magma dynamics of erupting volcanoes. However, the physical process at the origin of the resulting complex and broadband seismic signals remains unclear. Syn-eruptive very long period (VLP) seismic signals have been explained in terms of the sudden expansion of gas pockets rising in the liquid melt. Their origin is linked to a magma dynamics which triggers the explosive process occurring before the explosive onset. We provide evidence based on acoustic, thermal, and ground deformation data to demonstrate that VLP signals at Stromboli are generated at the top of the magma column mainly after the explosion onset. We show that VLP amplitude and duration scale with the eruptive flux which induces a decompression of 10
Identifiants
pubmed: 34625619
doi: 10.1038/s41598-021-99513-4
pii: 10.1038/s41598-021-99513-4
pmc: PMC8501111
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
20065Informations de copyright
© 2021. The Author(s).
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