Eruption of Soufrière Hills (1995–2009) from an offshore perspective : insights from repeated swath bathymetry surveys

Le Friant, A., Deplus, C., Boudon, G., Feuillet, N., Trofimovs, J., Komorowski, J.C., Sparks, R.S.J., Talling, P.J., Loughlin, S., Palmer, M.R., & Ryan, G. (2010) Eruption of Soufrière Hills (1995–2009) from an offshore perspective : insights from repeated swath bathymetry surveys. Geophysical Research Letters, 37(11), pp. 1-6.

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Abstract

This contribution provides an analysis of the 1995–2009 eruptive period of Soufrière Hills volcano (Montserrat) from a unique offshore perspective. The methodology is based on five repeated swath bathymetric surveys. The difference between the 2009 and 1999 bathymetry suggests that at least 395 Mm3 of material has entered the sea. This proximal deposit reaches 95 m thick and extends ∼7km from shore. However, the difference map does not include either the finer distal part of the submarine deposit or the submarine part of the delta close to the shoreline. We took both contributions into account by using additional information such as that from marine sediment cores. By March 2009, at least 65% of the material erupted throughout the eruption has been deposited into the sea. This work provides an excellent basis for assessing the future activity of the Soufrière Hills volcano (including potential collapse), and other volcanoes on small islands.

Impact and interest:

27 citations in Scopus
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22 citations in Web of Science®

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ID Code: 52954
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Soufriere Hills Volcano, Montserrat, Bathymetry, Submarine Deposit
DOI: 10.1029/2010GL043580
ISSN: 0094-8276
Divisions: Current > Schools > School of Earth, Environmental & Biological Sciences
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2010 American Geophysical Union
Deposited On: 06 Aug 2012 22:52
Last Modified: 10 Oct 2012 02:14

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