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dc.contributor.author
Ammirati, Jean Baptiste
dc.contributor.author
Azúa, Kellen
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Pastén Araya, Francisco
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Richter, Andreas Jorg
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Wiens, Douglas A.
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Flores, María Constanza
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Ruiz, Sergio
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Guzmán Marín, Pedro
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Lanza, Federica
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Sielfeld, Gerd
dc.date.available
2024-08-27T12:31:48Z
dc.date.issued
2024-05
dc.identifier.citation
Ammirati, Jean Baptiste; Azúa, Kellen; Pastén Araya, Francisco; Richter, Andreas Jorg; Wiens, Douglas A.; et al.; Fault reactivation linked to rapid ice-mass removal from the Southern Patagonian Icefield (48–52°S); Elsevier Science; Tectonophysics; 880; 5-2024; 1-11
dc.identifier.issn
0040-1951
dc.identifier.uri
http://hdl.handle.net/11336/243176
dc.description.abstract
The Southern Patagonian Icefield (SPI) lies above an area of slow convergence between Antarctic and South-America plates, where limited seismicity is recorded by global and regional seismic networks. To understand the seismic behavior of this zone, we analyze two years of continuous broad-band data recorded by 27 seismometers, deployed around the SPI. Substantial ice loss coupled with the unusually low viscosity of the underlying mantle is causing a rapid uplift. Our findings indicate that most of the seismicity occurs in the upper crust, likely associated with the (re)activation of regional compressive structures. However, earthquakes immediately beneath the SPI generally are shallower and show normal or strike-slip faulting. We suggest that this activity is promoted as a response to the crustal relaxation after rapid ice removal of SPI. The almost complete absence of interplate and intraslab events is consistent with a locked megathrust fault interface, highlighting the similarity of this region with the Cascadia subduction zone.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Subduction zones
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Antarctic plate
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Southern Patagonia Icefield
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Ice-mass removal seismicity
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Regional stress
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Geociencias multidisciplinaria
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Fault reactivation linked to rapid ice-mass removal from the Southern Patagonian Icefield (48–52°S)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-08-26T14:58:28Z
dc.journal.volume
880
dc.journal.pagination
1-11
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Ammirati, Jean Baptiste. Universidad de Chile; Chile. University Of Lausanne (ul); . Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
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Fil: Azúa, Kellen. Universidad de Chile; Chile
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Fil: Pastén Araya, Francisco. Universidad Catolica de Maule; Chile
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Fil: Richter, Andreas Jorg. Universidad Nacional de la Plata. Facultad de Cs.astronomicas y Geofisicas. Laboratorio Maggia.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
dc.description.fil
Fil: Wiens, Douglas A.. Washington University in St. Louis; Estados Unidos
dc.description.fil
Fil: Flores, María Constanza. Universidad de Chile; Chile
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Fil: Ruiz, Sergio. Universidad de Chile; Chile
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Fil: Guzmán Marín, Pedro. Eidgenossische Technische Hochschule zurich (eth Zurich);
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Fil: Lanza, Federica. Eidgenossische Technische Hochschule zurich (eth Zurich);
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Fil: Sielfeld, Gerd. University of Auckland; Nueva Zelanda
dc.journal.title
Tectonophysics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S0040195124001227
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.tecto.2024.230320
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