Vulcanian explosion at Soufrière Hills Volcano, Montserrat on March 2004 as revealed by strain data
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...
| Main Authors: | , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2012
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| Online Access: | https://hdl.handle.net/10356/95411 http://hdl.handle.net/10220/8771 |
| _version_ | 1826118736735633408 |
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| author | Linde, Alan T. Clarke, A. B. Malin, P. Shalev, E. Sparks, S. Sacks, Selwyn Hidayat, Dannie Voight, Barry Elsworth, Derek Mattioli, Glen Widiwijayanti, Christina |
| author_facet | Linde, Alan T. Clarke, A. B. Malin, P. Shalev, E. Sparks, S. Sacks, Selwyn Hidayat, Dannie Voight, Barry Elsworth, Derek Mattioli, Glen Widiwijayanti, Christina |
| author_sort | Linde, Alan T. |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T04:48:21Z |
| format | Journal Article |
| id | ntu-10356/95411 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:48:21Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | ntu-10356/954112020-09-26T21:29:36Z Vulcanian explosion at Soufrière Hills Volcano, Montserrat on March 2004 as revealed by strain data Linde, Alan T. Clarke, A. B. Malin, P. Shalev, E. Sparks, S. Sacks, Selwyn Hidayat, Dannie Voight, Barry Elsworth, Derek Mattioli, Glen Widiwijayanti, Christina DRNTU::Science::Geology::Volcanoes and earthquakes 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. Published version 2012-10-12T08:23:25Z 2019-12-06T19:14:19Z 2012-10-12T08:23:25Z 2019-12-06T19:14:19Z 2010 2010 Journal Article 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. 0094-8276 https://hdl.handle.net/10356/95411 http://hdl.handle.net/10220/8771 10.1029/2009GL041988 en Geophysical research letters © 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. application/pdf |
| spellingShingle | DRNTU::Science::Geology::Volcanoes and earthquakes Linde, Alan T. Clarke, A. B. Malin, P. Shalev, E. Sparks, S. Sacks, Selwyn Hidayat, Dannie Voight, Barry Elsworth, Derek Mattioli, Glen Widiwijayanti, Christina Vulcanian explosion at Soufrière Hills Volcano, Montserrat on March 2004 as revealed by strain data |
| title | Vulcanian explosion at Soufrière Hills Volcano, Montserrat on March 2004 as revealed by strain data |
| title_full | Vulcanian explosion at Soufrière Hills Volcano, Montserrat on March 2004 as revealed by strain data |
| title_fullStr | Vulcanian explosion at Soufrière Hills Volcano, Montserrat on March 2004 as revealed by strain data |
| title_full_unstemmed | Vulcanian explosion at Soufrière Hills Volcano, Montserrat on March 2004 as revealed by strain data |
| title_short | Vulcanian explosion at Soufrière Hills Volcano, Montserrat on March 2004 as revealed by strain data |
| title_sort | vulcanian explosion at soufriere hills volcano montserrat on march 2004 as revealed by strain data |
| topic | DRNTU::Science::Geology::Volcanoes and earthquakes |
| url | https://hdl.handle.net/10356/95411 http://hdl.handle.net/10220/8771 |
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