Ambient noise tomography of Misti volcano, Peru

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dc.contributor.authorCabrera-Pérez, Iván
dc.contributor.authorCenteno Quico, Riky
dc.contributor.authorSoubestre, Jean
dc.contributor.authorD'Auria, Luca
dc.contributor.authorRivera, Marco
dc.contributor.authorMachacca, Roger
dc.coverage.spatialMisti volcano
dc.coverage.spatialPeru
dc.date.accessioned2022-04-19T15:53:40Z
dc.date.available2022-04-19T15:53:40Z
dc.date.issued2022
dc.description.abstractTo better understand the recent internal structure of Misti volcano, we determined a 3D S-wave velocity model applying Ambient Noise Tomography (ANT). We used data from 23 broadband and short-period seismic stations temporarily installed at Misti volcano between March and December 2011. This dataset allowed us to obtain empirical Green's functions by cross-correlating seismic ambient noise signals. Then, we retrieved 104 dispersion curves using the frequency-time analysis (FTAN) and, through a non-linear multiscale inversion, we obtained nine 2-D Rayleigh waves group velocity maps for periods in the range 0.7 s - 2 s. Finally, we carried out the depth inversion through a Bayesian transdimensional inversion to obtain a 3-D S-wave velocity model down to 3 km depth. Our study highlights five relevant seismic velocity anomalies. We observed the presence of three high-velocity zones located in the west-northwest, southwest and southeast parts of the crater, that could be related to intrusive bodies possibly associated with the formation of Misti volcano. We also observed two low-velocity anomalies in the volcano's western and central parts, which coincide with previous studies' findings and are related to fractured and weakened materials associated with the external caldera collapse and recent eruption episodes.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationCabrera-Pérez, I., Centeno, R., Soubestre, J., D’Auria, L., Rivera, M., & Machacca, R. (2022). Ambient noise tomography of Misti volcano, Peru.==$Journal of Volcanology and Geothermal Research, 426,$==107538. https://doi.org/10.1016/j.jvolgeores.2022.107538es_ES
dc.identifier.doihttps://doi.org/10.1016/j.jvolgeores.2022.107538es_ES
dc.identifier.govdocindex-oti2018
dc.identifier.journalJournal of Volcanology and Geothermal Researches_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/5220
dc.language.isospaes_ES
dc.publisherElsevieres_ES
dc.relation.ispartofurn:issn:0377-0273
dc.rightsinfo:eu-repo/semantics/closedAccesses_ES
dc.subjectAmbient noise tomographyes_ES
dc.subjectTransdimensional inversiones_ES
dc.subjectMisti volcanoes_ES
dc.subject.ocdehttps://purl.org/pe-repo/ocde/ford#1.05.07es_ES
dc.titleAmbient noise tomography of Misti volcano, Perues_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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