QUT ePrints

Submarine pyroclastic deposits formed during the 20th May 2006 dome collapse of the Soufrière Hills Volcano, Montserrat

Trofimovs, J., Foster, C., Sparks, R.S.J., Loughlin, S., Friant, A., Deplus, C., Porritt, L., Christopher, T., Luckett, R., Talling, P.J., Palmer, M.R., & Bas, T. (2012) Submarine pyroclastic deposits formed during the 20th May 2006 dome collapse of the Soufrière Hills Volcano, Montserrat. Bulletin of Volcanology, 74(2), pp. 391-405.

View at publisher

Abstract

The 20th May 2006 lava dome collapse of the Soufrière Hills Volcano, Montserrat, had a total non-dense rock equivalent (non-DRE) collapse volume of approximately 115 × 10 6 m 3. The majority of this volume was deposited into the ocean. The collapse was rapid, 85% of the mobilized volume being removed in just 35 min, giving peak pyroclastic flow flux of 66 × 10 3 m 3 s -1. Channel and levee facies on the submarine flanks of the volcano and formation of a thick, steep-sided ridge, suggest that the largest and most dense blocks were transported proximally as a high concentration granular flow. Of the submerged volume, 30% was deposited from the base of this granular flow, forming a linear, high-relief ridge that extends 7 km from shore. The remaining 70% of the submerged volume comprises the finer grain sizes, which were transported at least 40 km by turbidity currents on gradients of <2°. At several localities, the May 2006 distal turbidity currents ran up 200 m of topography and eroded up to 20 cm of underlying substrate. Multiple turbidites are preserved, representing current reflection from the graben margins and deflection around topography. The high energy of the May 2006 collapse resulted in longer submarine run out than the larger (210 × 10 6 m 3) Soufrière Hills dome collapse in July 2003.

Impact and interest:

6 citations in Scopus
Search Google Scholar™
5 citations in Web of Science®

Citation countsare sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

18 since deposited on 04 Jul 2012
8 in the past twelve months

Full-text downloadsdisplays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 51442
Item Type: Journal Article
Keywords: Bathymetry, Dome Collapse, Montserrat, Pyroclastic Flow, Submarine
DOI: 10.1007/s00445-011-0533-5
ISSN: 1432-0819
Subjects: Australian and New Zealand Standard Research Classification > EARTH SCIENCES (040000)
Divisions: Current > Schools > School of Earth, Environmental & Biological Sciences
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2011 Springer-Verlag
Copyright Statement: The original publication is available at SpringerLink http://www.springerlink.com
Deposited On: 05 Jul 2012 08:38
Last Modified: 11 Oct 2012 16:31

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page