Item talk:Q244967
From geokb
{
"USGS Publications Warehouse": { "@context": "https://schema.org", "@type": "Article", "additionalType": "Journal Article", "name": "Source characterization for an explosion during the 2009 eruption of Redoubt Volcano from very-long-period seismic waves", "identifier": [ { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse IndexID", "value": "70193589", "url": "https://pubs.usgs.gov/publication/70193589" }, { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse Internal ID", "value": 70193589 }, { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1016/j.jvolgeores.2012.04.018", "url": "https://doi.org/10.1016/j.jvolgeores.2012.04.018" } ], "journal": { "@type": "Periodical", "name": "Journal of Volcanology and Geothermal Research", "volumeNumber": "259", "issueNumber": null }, "inLanguage": "en", "isPartOf": [ { "@type": "CreativeWorkSeries", "name": "Journal of Volcanology and Geothermal Research" } ], "datePublished": "2013", "dateModified": "2017-11-02", "abstract": "The 2009 eruption of Redoubt produced several very-long-period (VLP) signals associated with explosions. We invert for the source location and mechanism of an explosion at Redoubt volcano using waveform methods applied to broadband recordings. Such characterization of the source carries information on the geometry of the conduit and the physics of the explosion process. Inversions are carried out assuming the volcanic source can be modeled as a point source, with mechanisms described by a) a set of 3 orthogonal forces, b) a moment tensor consisting of force couples, and c) both forces and moment tensor components. We find that the source of the VLP seismic waves during the explosion is well-described by either a combined moment/force source located northeast of the crater and at an elevation of 1.6\u00a0km ASL or a moment source at an elevation of 800\u00a0m to the southwest of the crater. The moment tensors for the solutions with moment and force and moment-only share similar characteristics. The source time functions for both moment tensors begin with inflation (pressurization) and execute two cycles of deflation-reinflation (depressurization\u2013repressurization). Although the moment/force source provides a better fit to the data, we find that owing to the limited coverage of the broadband stations at Redoubt the moment-only source is the more robust and reliable solution. Based on the moment-only solution, we estimate a volume change of 19,000\u00a0m3\u00a0and a pressure change of 7\u00a0MPa in a dominant sill and an out-of-phase volume change of 5000\u00a0m3\u00a0and pressure change of 1.8\u00a0MPa in a subdominant dike at the source location. These results shed new light on the magmatic plumbing system beneath Redoubt and complement previous studies on Vulcanian explosions at other volcanoes.", "description": "12 p.", "publisher": { "@type": "Organization", "name": "Elsevier" }, "author": [ { "@type": "Person", "name": "Chouet, Bernard A. chouet@usgs.gov", "givenName": "Bernard A.", "familyName": "Chouet", "email": "chouet@usgs.gov", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0001-5527-0532", "url": "https://orcid.org/0000-0001-5527-0532" }, "affiliation": [ { "@type": "Organization", "name": "Volcano Science Center", "url": "https://www.usgs.gov/centers/volcano-science-center" } ] }, { "@type": "Person", "name": "Dawson, Phillip B. dawson@usgs.gov", "givenName": "Phillip B.", "familyName": "Dawson", "email": "dawson@usgs.gov", "affiliation": [ { "@type": "Organization", "name": "Volcano Science Center", "url": "https://www.usgs.gov/centers/volcano-science-center" } ] }, { "@type": "Person", "name": "Power, John A. jpower@usgs.gov", "givenName": "John A.", "familyName": "Power", "email": "jpower@usgs.gov", "identifier": { "@type": "PropertyValue", "propertyID": "ORCID", "value": "0000-0002-7233-4398", "url": "https://orcid.org/0000-0002-7233-4398" } }, { "@type": "Person", "name": "Haney, Matthew M. mhaney@usgs.gov", "givenName": "Matthew M.", "familyName": "Haney", "email": "mhaney@usgs.gov", "affiliation": [ { "@type": "Organization", "name": "Volcano Science Center", "url": "https://www.usgs.gov/centers/volcano-science-center" } ] } ], "funder": [ { "@type": "Organization", "name": "Volcano Science Center", "url": "https://www.usgs.gov/centers/volcano-science-center" } ], "spatialCoverage": [ { "@type": "Place", "additionalType": "country", "name": "United States", "url": "https://geonames.org/4074035" }, { "@type": "Place", "additionalType": "state", "name": "Alaska" }, { "@type": "Place", "additionalType": "unknown", "name": "Redoubt Volcano", "url": 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