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Vulcanian explosion at Soufrière Hills Volcano, Montserrat on March 2004 as revealed by strain data.

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Vulcanian explosion at Soufrière Hills Volcano, Montserrat on March 2004 as revealed by strain data.

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dc.contributor.author Linde, Alan T.
dc.contributor.author Sacks, Selwyn.
dc.contributor.author Hidayat, Dannie.
dc.contributor.author Voight, Barry.
dc.contributor.author Clarke, A. B.
dc.contributor.author Elsworth, Derek.
dc.contributor.author Mattioli, Glen.
dc.contributor.author Malin, P.
dc.contributor.author Shalev, E.
dc.contributor.author Sparks, S.
dc.contributor.author Widiwijayanti, Christina.
dc.date.accessioned 2012-10-12T08:23:25Z
dc.date.available 2012-10-12T08:23:25Z
dc.date.copyright 2010
dc.date.issued 2012-10-12
dc.identifier.citation Linde, A. T., Sacks, S., Hidayat, D., Voight, B., Clarke, A. B., Elsworth, D., et al. (2010). Vulcanian explosion at Soufrière Hills Volcano, Montserrat on March 2004 as revealed by strain data. Geophysical research letters, 37.
dc.identifier.issn 0094-8276
dc.identifier.uri http://hdl.handle.net/10220/8771
dc.description.abstract The CALIPSO collaborative volcano monitoring system on the Caribbean island of Montserrat includes observations of strain at depths ∼200 m using Sacks-Evertson strainmeters. Strain data for the March 2004 explosion of the Soufrière Hills Volcano are characterized by large, roughly equal but opposite polarity changes at the two near sites and much smaller changes at a more distant site. The strain amplitudes eliminate a spherical pressure (Mogi-type) source as the sole contributor. The initial changes are followed by smaller recoveries, but with differing relative recovery magnitudes. This dissimilarity requires a minimum of two pressure sources, which we model as a deep spherical pressure source and a shallow dike. The spherical source is fixed at the location derived from data for the massive dome collapse in July 2003. We solve for the best fitting dike plus sphere source combination. The dike geometry is consistent with earlier interpretations of dikes based on GPS data and other lines of evidence.
dc.language.iso en
dc.relation.ispartofseries Geophysical research letters
dc.rights © 2010 American Geophysical Union. This paper was published in Geophysical Research Letters and is made available as an electronic reprint (preprint) with permission of American Geophysical Union. The paper can be found at the following official URL: [DOI: http://dx.doi.org/10.1029/2009GL041988].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
dc.subject DRNTU::Science::Geology::Volcanoes and earthquakes.
dc.title Vulcanian explosion at Soufrière Hills Volcano, Montserrat on March 2004 as revealed by strain data.
dc.type Journal Article
dc.identifier.doi http://dx.doi.org/10.1029/2009GL041988
dc.description.version Published version

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