Experimental study of the interplay between magmatic rift intrusion and flank instability with application to the 2001 Mount Etna eruption

Handle URI:
http://hdl.handle.net/10754/347006
Title:
Experimental study of the interplay between magmatic rift intrusion and flank instability with application to the 2001 Mount Etna eruption
Authors:
Le Corvec, Nicolas; Walter, Thomas R.; Ruch, Joel; Bonforte, Alessandro; Puglisi, Giuseppe
Abstract:
Mount Etna volcano is subject to transient magmatic intrusions and flank movement. The east flank of the edifice, in particular, is moving eastward and is dissected by the Timpe Fault System. The relationship of this eastward motion with intrusions and tectonic fault motion, however, remains poorly constrained. Here we explore this relationship by using analogue experiments that are designed to simulate magmatic rift intrusion, flank movement, and fault activity before, during, and after a magmatic intrusion episode. Using particle image velocimetry allows for a precise temporal and spatial analysis of the development and activity of fault systems. The results show that the occurrence of rift intrusion episodes has a direct effect on fault activity. In such a situation, fault activity may occur or may be hindered, depending on the interplay of fault displacement and flank acceleration in response to dike intrusion. Our results demonstrate that a complex interplay may exist between an active tectonic fault system and magmatically induced flank instability. Episodes of magmatic intrusion change the intensity pattern of horizontal flank displacements and may hinder or activate associated faults. We further compare our results with the GPS data of the Mount Etna 2001 eruption and intrusion. We find that syneruptive displacement rates at the Timpe Fault System have differed from the preeruptive or posteruptive periods, which shows a good agreement of both the experimental and the GPS data. Therefore, understanding the flank instability and flank stability at Mount Etna requires consideration of both tectonic and magmatic forcing. Key Points Analyzing Mount Etna east flank dynamics during the 2001 eruption Good correlation between analogue models and GPS data Understanding the different behavior of faulting before/during/after an eruption © 2014. American Geophysical Union. All Rights Reserved.
KAUST Department:
King Abdullah University of Science and Technology; Thuwal Saudi Arabia
Citation:
Experimental study of the interplay between magmatic rift intrusion and flank instability with application to the 2001 Mount Etna eruption 2014, 119 (7):5356 Journal of Geophysical Research: Solid Earth
Publisher:
Wiley-Blackwell
Journal:
Journal of Geophysical Research: Solid Earth
Issue Date:
Jul-2014
DOI:
10.1002/2014JB011224
Type:
Article
ISSN:
21699313
Additional Links:
http://doi.wiley.com/10.1002/2014JB011224
Appears in Collections:
Articles

Full metadata record

DC FieldValue Language
dc.contributor.authorLe Corvec, Nicolasen
dc.contributor.authorWalter, Thomas R.en
dc.contributor.authorRuch, Joelen
dc.contributor.authorBonforte, Alessandroen
dc.contributor.authorPuglisi, Giuseppeen
dc.date.accessioned2015-03-23T11:15:21Zen
dc.date.available2015-03-23T11:15:21Zen
dc.date.issued2014-07en
dc.identifier.citationExperimental study of the interplay between magmatic rift intrusion and flank instability with application to the 2001 Mount Etna eruption 2014, 119 (7):5356 Journal of Geophysical Research: Solid Earthen
dc.identifier.issn21699313en
dc.identifier.doi10.1002/2014JB011224en
dc.identifier.urihttp://hdl.handle.net/10754/347006en
dc.description.abstractMount Etna volcano is subject to transient magmatic intrusions and flank movement. The east flank of the edifice, in particular, is moving eastward and is dissected by the Timpe Fault System. The relationship of this eastward motion with intrusions and tectonic fault motion, however, remains poorly constrained. Here we explore this relationship by using analogue experiments that are designed to simulate magmatic rift intrusion, flank movement, and fault activity before, during, and after a magmatic intrusion episode. Using particle image velocimetry allows for a precise temporal and spatial analysis of the development and activity of fault systems. The results show that the occurrence of rift intrusion episodes has a direct effect on fault activity. In such a situation, fault activity may occur or may be hindered, depending on the interplay of fault displacement and flank acceleration in response to dike intrusion. Our results demonstrate that a complex interplay may exist between an active tectonic fault system and magmatically induced flank instability. Episodes of magmatic intrusion change the intensity pattern of horizontal flank displacements and may hinder or activate associated faults. We further compare our results with the GPS data of the Mount Etna 2001 eruption and intrusion. We find that syneruptive displacement rates at the Timpe Fault System have differed from the preeruptive or posteruptive periods, which shows a good agreement of both the experimental and the GPS data. Therefore, understanding the flank instability and flank stability at Mount Etna requires consideration of both tectonic and magmatic forcing. Key Points Analyzing Mount Etna east flank dynamics during the 2001 eruption Good correlation between analogue models and GPS data Understanding the different behavior of faulting before/during/after an eruption © 2014. American Geophysical Union. All Rights Reserved.en
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://doi.wiley.com/10.1002/2014JB011224en
dc.rights©2014. American Geophysical Union. All Rights Reserved.en
dc.titleExperimental study of the interplay between magmatic rift intrusion and flank instability with application to the 2001 Mount Etna eruptionen
dc.typeArticleen
dc.contributor.departmentKing Abdullah University of Science and Technology; Thuwal Saudi Arabiaen
dc.identifier.journalJournal of Geophysical Research: Solid Earthen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionLunar and Planetary Institute, USRA; Houston Texas USAen
dc.contributor.institutionGFZ German Research Centre for Geosciences; Potsdam Germanyen
dc.contributor.institutionIstituto Nazionale di Geofisica e Vulcanologia - Sezione di Catania, Osservatorio Etneo; Catania Italyen
dc.contributor.institutionIstituto Nazionale di Geofisica e Vulcanologia - Sezione di Catania, Osservatorio Etneo; Catania Italyen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorRuch, Joelen
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