Explosion dynamics from strainmeter and microbarometer observations, Soufrière hills Volcano, Montserrat : 2008–2009
Vulcanian explosions with plumes to 12 km occurred at Soufrière Hills volcano (SHV) between July 2008 and January 2009. We report strainmeter and barometric data, featuring quasi-linear strain changes that correlate with explosive evacuation of the conduit at rates of ∼0.9−2 × 107 kg s−1. July and J...
| 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/10356/95520 http://hdl.handle.net/10220/8637 |
| _version_ | 1811695245150126080 |
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| author | Chardot, L. Foroozan, R. Sacks, S. Linde, A. Stewart, R. Fournier, N. Komorowski, J. C. Sparks, R. S. J. Voight, Barry. Clarke, A. B. Hidayat, Dannie Elsworth, Derek Mattioli, Glen Widiwijayanti, Christina |
| author_facet | Chardot, L. Foroozan, R. Sacks, S. Linde, A. Stewart, R. Fournier, N. Komorowski, J. C. Sparks, R. S. J. Voight, Barry. Clarke, A. B. Hidayat, Dannie Elsworth, Derek Mattioli, Glen Widiwijayanti, Christina |
| author_sort | Chardot, L. |
| collection | NTU |
| description | Vulcanian explosions with plumes to 12 km occurred at Soufrière Hills volcano (SHV) between July 2008 and January 2009. We report strainmeter and barometric data, featuring quasi-linear strain changes that correlate with explosive evacuation of the conduit at rates of ∼0.9−2 × 107 kg s−1. July and January explosion-generated strains were similar, ∼20 nanostrain at ∼5 km, and interpreted as contractions of a quasi-cylindrical conduit, with release of magmastatic pressure, and exsolution-generated overpressure of order 10 MPa. The 3 December 2008 event was distinctive with larger signals (∼140–200 nanostrain at 5–6 km) indicating that a rapid pressurization preceded and triggered the explosion. Modeling suggests a dike with ENE trend, implying that feeder dikes at SHV had diverse attitudes at different times during the eruption. All explosions were associated with acoustic pulses and remarkable atmospheric gravity waves. |
| first_indexed | 2024-10-01T07:20:24Z |
| format | Journal Article |
| id | ntu-10356/95520 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:20:24Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | ntu-10356/955202020-09-26T21:35:20Z Explosion dynamics from strainmeter and microbarometer observations, Soufrière hills Volcano, Montserrat : 2008–2009 Chardot, L. Foroozan, R. Sacks, S. Linde, A. Stewart, R. Fournier, N. Komorowski, J. C. Sparks, R. S. J. Voight, Barry. Clarke, A. B. Hidayat, Dannie Elsworth, Derek Mattioli, Glen Widiwijayanti, Christina DRNTU::Science::Geology::Volcanoes and earthquakes Vulcanian explosions with plumes to 12 km occurred at Soufrière Hills volcano (SHV) between July 2008 and January 2009. We report strainmeter and barometric data, featuring quasi-linear strain changes that correlate with explosive evacuation of the conduit at rates of ∼0.9−2 × 107 kg s−1. July and January explosion-generated strains were similar, ∼20 nanostrain at ∼5 km, and interpreted as contractions of a quasi-cylindrical conduit, with release of magmastatic pressure, and exsolution-generated overpressure of order 10 MPa. The 3 December 2008 event was distinctive with larger signals (∼140–200 nanostrain at 5–6 km) indicating that a rapid pressurization preceded and triggered the explosion. Modeling suggests a dike with ENE trend, implying that feeder dikes at SHV had diverse attitudes at different times during the eruption. All explosions were associated with acoustic pulses and remarkable atmospheric gravity waves. Published version 2012-09-25T08:19:05Z 2019-12-06T19:16:24Z 2012-09-25T08:19:05Z 2019-12-06T19:16:24Z 2010 2010 Journal Article Chardot, L., Voight, B., Foroozan, R., Sacks, S., Linde, A., Stewart, R., et al. (2010). Explosion dynamics from strainmeter and microbarometer observations, Soufrière Hills Volcano, Montserrat: 2008–2009. Geophysical Research Letters, 37. 0094-8276 https://hdl.handle.net/10356/95520 http://hdl.handle.net/10220/8637 10.1029/2010GL044661 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: [http://dx.doi.org/10.1029/2010GL044661 ]. 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 Chardot, L. Foroozan, R. Sacks, S. Linde, A. Stewart, R. Fournier, N. Komorowski, J. C. Sparks, R. S. J. Voight, Barry. Clarke, A. B. Hidayat, Dannie Elsworth, Derek Mattioli, Glen Widiwijayanti, Christina Explosion dynamics from strainmeter and microbarometer observations, Soufrière hills Volcano, Montserrat : 2008–2009 |
| title | Explosion dynamics from strainmeter and microbarometer observations, Soufrière hills Volcano, Montserrat : 2008–2009 |
| title_full | Explosion dynamics from strainmeter and microbarometer observations, Soufrière hills Volcano, Montserrat : 2008–2009 |
| title_fullStr | Explosion dynamics from strainmeter and microbarometer observations, Soufrière hills Volcano, Montserrat : 2008–2009 |
| title_full_unstemmed | Explosion dynamics from strainmeter and microbarometer observations, Soufrière hills Volcano, Montserrat : 2008–2009 |
| title_short | Explosion dynamics from strainmeter and microbarometer observations, Soufrière hills Volcano, Montserrat : 2008–2009 |
| title_sort | explosion dynamics from strainmeter and microbarometer observations soufriere hills volcano montserrat 2008 2009 |
| topic | DRNTU::Science::Geology::Volcanoes and earthquakes |
| url | https://hdl.handle.net/10356/95520 http://hdl.handle.net/10220/8637 |
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