The fluid-driven tectonic swarm of Aysen Fjord, Chile (2007) associated with two earthquakes (Mw=6.1 and Mw=6.2) within the Liquine-Ofqui Fault Zone

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dc.contributor.authorLegrand, D.
dc.contributor.authorBarrientos, S.
dc.contributor.authorBataille, K.
dc.contributor.authorCembrano, J.
dc.contributor.authorPavez, A.
dc.date.accessioned2024-01-10T13:43:48Z
dc.date.available2024-01-10T13:43:48Z
dc.date.issued2011
dc.description.abstractA seismic swarm of more than 7200 earthquakes occurred in Aysen Fjord, southern Chile, from January to June 2007. It started suddenly on 23 January 2007 with an earthquake of magnitude Mw=5.3, followed by five earthquakes with magnitudes increasing from Mw=5.2 to 6.2 within three months. Two large earthquakes of magnitudes Mw=6.1 and 6.2 occurred on 02 and 21 April 2007, respectively. The latest earthquake generated landslides that induced a tsunami within the ford, killing 10 people. This swarm has been examined using international seismic catalogues and seismicity located with a local seismic network; in particular its double tectonic and volcanic origin has been explored. All the focal mechanisms are compatible with the long- and short-term tectonics of the Liquine-Ofqui Fault Zone, a major intra-arc fault system of the Patagonian fjord land. The space, time, and size distributions of these earthquakes, that occurred within an active volcanic area revealed by the presence of several Holocene monogenetic volcanoes, may be explained both by fluid-induced (magma and/or hydrothermal fluids) activity combined with tectonic activity. The co-existence of these two tectonic and volcanic phenomena is a good example of retroactive links between fluids and tectonic fractures. (C) 2010 Elsevier Ltd. All rights reserved.
dc.description.funderProyecto Fondecyt, Conicyt, Chile
dc.fechaingreso.objetodigital2024-04-09
dc.format.extent8 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.csr.2010.05.008
dc.identifier.eissn1873-6955
dc.identifier.issn0278-4343
dc.identifier.urihttps://doi.org/10.1016/j.csr.2010.05.008
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/78761
dc.identifier.wosidWOS:000287952300002
dc.information.autorucIngeniería;Cembrano J ;S/I;1008585
dc.issue.numero3-4
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final161
dc.pagina.inicio154
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.revistaCONTINENTAL SHELF RESEARCH
dc.rightsacceso restringido
dc.subjectAysen Fjord Chile
dc.subjectLiquine-Ofqui Fault
dc.subjectVolcanic swarm
dc.subjectb-Value
dc.subjectMonogenetic volcano
dc.subjectINTRAARC SHEAR
dc.subjectIZU PENINSULA
dc.subjectSEISMIC SWARM
dc.subjectB-VALUES
dc.subjectVOLCANO
dc.subjectDEFORMATION
dc.subjectBENEATH
dc.subjectMAGMA
dc.subjectANDES
dc.subjectAREA
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleThe fluid-driven tectonic swarm of Aysen Fjord, Chile (2007) associated with two earthquakes (Mw=6.1 and Mw=6.2) within the Liquine-Ofqui Fault Zone
dc.typeartículo
dc.volumen31
sipa.codpersvinculados1008585
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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