Multiphase-flow numerical modeling of the 18 May 1980 lateral blast at Mount St. Helens, USA

Volcanic lateral blasts are among the most spectacular and devastating of natural phenomena, but their dynamics are still poorly understood. Here we investigate the best documented and most controversial blast at Mount St. Helens (Washington State, United States), on 18 May 1980. By means of three-d...

Full description

Saved in:

Bibliographic Details
Main Authors:	Widiwijayanti, Christina., Voight, Barry., Ongaro, T. Esposti., Clarke, A. B., Neri, A.
Format:	Article
Language:	English
Published:	2012
Subjects:	DRNTU::Science::Geology::Volcanoes and earthquakes
Online Access:	https://hdl.handle.net/10356/95605 http://hdl.handle.net/10220/8813
Tags:	Add Tag No Tags, Be the first to tag this record!
Institution:	Nanyang Technological University
Language:	English

id	sg-ntu-dr.10356-95605
record_format	dspace
spelling	sg-ntu-dr.10356-956052020-09-26T21:35:56Z Multiphase-flow numerical modeling of the 18 May 1980 lateral blast at Mount St. Helens, USA Widiwijayanti, Christina. Voight, Barry. Ongaro, T. Esposti. Clarke, A. B. Neri, A. DRNTU::Science::Geology::Volcanoes and earthquakes Volcanic lateral blasts are among the most spectacular and devastating of natural phenomena, but their dynamics are still poorly understood. Here we investigate the best documented and most controversial blast at Mount St. Helens (Washington State, United States), on 18 May 1980. By means of three-dimensional multiphase numerical simulations we demonstrate that the blast front propagation, final runout, and damage can be explained by the emplacement of an unsteady, stratified pyroclastic density current, controlled by gravity and terrain morphology. Such an interpretation is quantitatively supported by large-scale observations at Mount St. Helens and will influence the definition and predictive mapping of hazards on blast-dangerous volcanoes worldwide. Published Version 2012-10-29T03:21:59Z 2019-12-06T19:18:09Z 2012-10-29T03:21:59Z 2019-12-06T19:18:09Z 2011 2011 Journal Article Ongaro, T. E., Widiwijayanti, C., Clarke, A. B., Voight, B., & Neri, A. (2011). Multiphase-flow numerical modeling of the 18 May 1980 lateral blast at Mount St. Helens, USA. Geology, 39(6), 535-538. https://hdl.handle.net/10356/95605 http://hdl.handle.net/10220/8813 10.1130/G31865.1 en Geology © 2012 American Geophysical Union. This paper was published in Journal of geophysical research : solid Earth and is made available as an electronic reprint (preprint) with permission of American Geophysical Union. The paper can be found at the following official OpenURL: [http://dx.doi.org/10.1029/2011JB009081]. 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
institution	Nanyang Technological University
building	NTU Library
country	Singapore
collection	DR-NTU
language	English
topic	DRNTU::Science::Geology::Volcanoes and earthquakes
spellingShingle	DRNTU::Science::Geology::Volcanoes and earthquakes Widiwijayanti, Christina. Voight, Barry. Ongaro, T. Esposti. Clarke, A. B. Neri, A. Multiphase-flow numerical modeling of the 18 May 1980 lateral blast at Mount St. Helens, USA
description	Volcanic lateral blasts are among the most spectacular and devastating of natural phenomena, but their dynamics are still poorly understood. Here we investigate the best documented and most controversial blast at Mount St. Helens (Washington State, United States), on 18 May 1980. By means of three-dimensional multiphase numerical simulations we demonstrate that the blast front propagation, final runout, and damage can be explained by the emplacement of an unsteady, stratified pyroclastic density current, controlled by gravity and terrain morphology. Such an interpretation is quantitatively supported by large-scale observations at Mount St. Helens and will influence the definition and predictive mapping of hazards on blast-dangerous volcanoes worldwide.
format	Article
author	Widiwijayanti, Christina. Voight, Barry. Ongaro, T. Esposti. Clarke, A. B. Neri, A.
author_facet	Widiwijayanti, Christina. Voight, Barry. Ongaro, T. Esposti. Clarke, A. B. Neri, A.
author_sort	Widiwijayanti, Christina.
title	Multiphase-flow numerical modeling of the 18 May 1980 lateral blast at Mount St. Helens, USA
title_short	Multiphase-flow numerical modeling of the 18 May 1980 lateral blast at Mount St. Helens, USA
title_full	Multiphase-flow numerical modeling of the 18 May 1980 lateral blast at Mount St. Helens, USA
title_fullStr	Multiphase-flow numerical modeling of the 18 May 1980 lateral blast at Mount St. Helens, USA
title_full_unstemmed	Multiphase-flow numerical modeling of the 18 May 1980 lateral blast at Mount St. Helens, USA
title_sort	multiphase-flow numerical modeling of the 18 may 1980 lateral blast at mount st. helens, usa
publishDate	2012
url	https://hdl.handle.net/10356/95605 http://hdl.handle.net/10220/8813
_version_	1681059041406615552

Multiphase-flow numerical modeling of the 18 May 1980 lateral blast at Mount St. Helens, USA

Similar Items