Local, Regional, and Remote Seismo-acoustic Observations of the April 2015 VEI 4 Eruption of Calbuco Volcano, Chile

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dc.contributor.authorMatoza, Robin S.
dc.contributor.authorFee, David
dc.contributor.authorGreen, David N.
dc.contributor.authorPichon, Alexis Le
dc.contributor.authorVergoz, Julien
dc.contributor.authorHaney, Matthew M.
dc.contributor.authorMikesell, T. Dylan
dc.contributor.authorFranco, Luis
dc.contributor.authorValderrama, O. Alberto
dc.contributor.authorKelley, Megan R.
dc.contributor.authorMcKee, Kathleen
dc.contributor.authorCeranna, Lars
dc.date.accessioned2023-01-11T16:14:16Z
dc.date.available2023-01-11T16:14:16Z
dc.date.issued2018-03-07
dc.description.abstractThe two major explosive phases of the 22–23 April 2015 eruption of Calbuco volcano, Chile,produced powerful seismicity and infrasound. The eruption was recorded on seismo-acoustic stations outto 1,540 km and onfive stations (IS02, IS08, IS09, IS27, and IS49) of the International Monitoring System (IMS)infrasound network at distances from 1,525 to 5,122 km. The remote IMS infrasound stations provide anaccurate explosion chronology consistent with the regional and local seismo-acoustic data and with previousstudies of lightning and plume observations. We use the IMS network to detect and locate the eruptionsignals using a brute-force, grid-search, cross-bearings approach. After incorporating azimuth deviationcorrections from stratospheric crosswinds using 3-D ray tracing, the estimated source location is 172 km fromtrue. This case study highlights the significant capability of the IMS infrasound network to provide automateddetection, characterization, and timing estimates of global explosive volcanic activity. Augmenting theIMS with regional seismo-acoustic networks will dramatically enhance volcanic signal detection, reducelatency, and improve discrimination capability.en_US
dc.description.sponsorshipWe used data from seismic networkcodes C (Chilean National SeismicNetwork), C1 (Red SismologicaNacional), and GT (Global TelemeteredSeismograph Network), downloadedfrom the IRIS DMC (http://www.iris.edu).Data from the CTBT IMS infrasoundnetwork are available through theCTBTO vDEC platform (https://www.ctbto.org/specials/vdec/). Our analysisincluded the use of ObsPy (Beyreutheret al., 2010) and PMCC (Le Pichon et al.,2010), and we used GMT for plotting(Wessel & Smith, 1991). We thank DannyBowman, Weston Thelen, and an anon-ymous reviewer for their comments thathelped to improve the manuscript. Thiswork was supported by NSF grantsEAR–1614855 and EAR-1614323.en_US
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2017JB015182en_US
dc.format.extent14 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2reql-ikyl
dc.identifier.citationMatoza, R. S., Fee, D., Green, D. N.,Le Pichon, A., Vergoz, J., Haney, M. M.,et al. (2018). Local, regional, and remoteseismo-acoustic observations of theApril 2015 VEI 4 eruption of Calbucovolcano, Chile.Journal of GeophysicalResearch: Solid Earth,123, 3814–3827. https://doi.org/10.1002/2017JB015182.en_US
dc.identifier.urihttps://doi.org/10.1002/2017JB015182
dc.identifier.urihttp://hdl.handle.net/11603/26627
dc.language.isoen_USen_US
dc.publisherAGUen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC GESTAR II Collection
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleLocal, Regional, and Remote Seismo-acoustic Observations of the April 2015 VEI 4 Eruption of Calbuco Volcano, Chileen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0003-3189-9189en_US

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