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Enhancement of eruption explosivity by heterogeneous bubble nucleation triggered by magma mingling

Parades-Mariño, J. and Dobson, K.J. and Ortenzi, G. and Küppers, U. and Morgavi, D. and Petrelli, M. and Hess, K.-U. and Laeger, K. and Porreca, M. and Pimentel, A. and Perugini, D. (2017) Enhancement of eruption explosivity by heterogeneous bubble nucleation triggered by magma mingling. Scientific Reports, 7 (16897), pp. 1-10. Nature Publishing Group. DOI: 10.1038/s41598-017-17098-3 ISSN 2045-2322

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Official URL: http://dx.doi.org/10.1038/s41598-017-17098-3

Abstract

We present new evidence that shows magma mingling can be a key process during highly explosive eruptions. Using fractal analysis of the size distribution of trachybasaltic fragments found on the inner walls of bubbles in trachytic pumices, we show that the more mafic component underwent fracturing during quenching against the trachyte. We propose a new mechanism for how this magmatic interaction at depth triggered rapid heterogeneous bubble nucleation and growth and could have enhanced eruption explosivity. We argue that the data support a further, and hitherto unreported contribution of magma mingling to highly explosive eruptions. This has implications for hazard assessment for those volcanoes in which evidence of magma mingling exists.

Item URL in elib:https://elib.dlr.de/119733/
Document Type:Article
Title:Enhancement of eruption explosivity by heterogeneous bubble nucleation triggered by magma mingling
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Parades-Mariño, J.Department of Physics and Geology, University of Perugia, Piazza dell’Universitá, 06100, Perugia, ItalyUNSPECIFIED
Dobson, K.J.Department of Earth Sciences, Durham University, Science Labs, Durham, DH1 3LE, United KingdomUNSPECIFIED
Ortenzi, G.gianluigi.ortenzi (at) dlr.deUNSPECIFIED
Küppers, U.Department of Earth and Environmental Sciences, Ludwig-Maximilians-Universitat, Theresienstraβe 41, 80333, Munich, GermanyUNSPECIFIED
Morgavi, D.Department of Physics and Geology, University of Perugia, Piazza dell’Universitá, 06100, Perugia, ItalyUNSPECIFIED
Petrelli, M.Department of Physics and Geology, University of Perugia, Piazza dell’Universitá, 06100, Perugia, ItalyUNSPECIFIED
Hess, K.-U.Department of Earth and Environmental Sciences, Ludwig-Maximilians-Universitat, Theresienstraβe 41, 80333, Munich, GermanyUNSPECIFIED
Laeger, K.Department of Physics and Geology, University of Perugia, Piazza dell’Universitá, 06100, Perugia, ItalyUNSPECIFIED
Porreca, M.Department of Physics and Geology, University of Perugia, Piazza dell’Universitá, 06100, Perugia, ItalyUNSPECIFIED
Pimentel, A.Centro de Informação e Vigilância Sismovulcânica dos Açores, Rua Mãe de Deus, 9501-801, Ponta Delgada, PortugalUNSPECIFIED
Perugini, D.Department of Physics and Geology, University of Perugia, Piazza dell’Universitá, 06100, Perugia, ItalyUNSPECIFIED
Date:4 December 2017
Journal or Publication Title:Scientific Reports
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:7
DOI :10.1038/s41598-017-17098-3
Page Range:pp. 1-10
Publisher:Nature Publishing Group
ISSN:2045-2322
Status:Published
Keywords:volcanic eruptions, bubble nucleation, magma interaction, fragmentation, fractal analysis
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Vorhaben Exploration des Sonnensystems
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Physics
Deposited By: Sohl, Frank
Deposited On:22 May 2018 13:02
Last Modified:23 May 2018 13:22

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