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Unique strainmeter observations of Vulcanian explosions, Soufrière hills volcano, Montserrat, July 2003

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Unique strainmeter observations of Vulcanian explosions, Soufrière hills volcano, Montserrat, July 2003

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dc.contributor.author Voight, Barry
dc.contributor.author Hidayat, Dannie
dc.contributor.author Sacks, S.
dc.contributor.author Linde, A.
dc.contributor.author Chardot, L.
dc.contributor.author Clarke, A. B.
dc.contributor.author Elsworth, Derek
dc.contributor.author Foroozan, R.
dc.contributor.author Malin, P.
dc.contributor.author Mattioli, Glen
dc.contributor.author McWhorter, N.
dc.contributor.author Shalev, E.
dc.contributor.author Sparks, R. S. J.
dc.contributor.author Widiwijayanti, Christina
dc.contributor.author Young, S. R.
dc.date.accessioned 2012-10-29T03:07:02Z
dc.date.available 2012-10-29T03:07:02Z
dc.date.copyright 2010
dc.date.issued 2012-10-29
dc.identifier.citation Voight, B., Hidayat, D., Sacks, S., Linde, A., Chardot, L., Clarke, A. b., et al. (2010). Unique strainmeter observations of Vulcanian explosions, Soufrière Hills Volcano, Montserrat, July 2003. Geophysical research letters, 37.
dc.identifier.issn 0094-8276
dc.identifier.uri http://hdl.handle.net/10220/8811
dc.description.abstract Five Vulcanian explosions were triggered by collapse of the Soufrière Hills Volcano lava dome in 2003. We report strainmeter data for three explosions, characterized by four stages: a short transition between the onset of disturbance and a pronounced change in strain; a quasi-linear ramp accounting for the majority of strain change; a more gradual continued decline of strain to a minimum value; and a strain recovery phase lasting hours. Remarkable ∼800 s barometric gravity waves propagated at ∼30 m s−1. Eruption volumes estimated from plume height and strain data are 0.32–0.42 × 10^6, 0.26–0.49 × 10^6, and 0.81–0.84 × 10^6 m3, for Explosions 3–5 respectively, consistent with quasi-cylindrical conduit drawdown <2 km. The duration of vigorous explosion is given by the strain signature, indicating mass fluxes of order 10^7 kg s−1. Conduit pressures released reflect static weight of porous gas-charged magma, and exsolution-generated overpressures of order 10 MPa.
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: [DOI: http://dx.doi.org/10.1029/2010GL042551]. 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 Unique strainmeter observations of Vulcanian explosions, Soufrière hills volcano, Montserrat, July 2003
dc.type Journal Article
dc.identifier.doi http://dx.doi.org/10.1029/2010GL042551
dc.description.version Published version

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