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Fault reactivation linked to rapid ice-mass removal from the Southern Patagonian Icefield (48–52°S)

dc.contributor.authorAmmirati, Jean-Baptiste
dc.contributor.authorAzúa, Kellen
dc.contributor.authorPastén-Araya, Francisco
dc.contributor.authorRichter, Andreas
dc.contributor.authorWiens, Douglas A.
dc.contributor.authorFlores, María Constanza
dc.contributor.authorRuiz, Sergio
dc.contributor.authorGuzmán-Marín, Pedro
dc.contributor.authorLanza, Federica
dc.contributor.authorSielfeld, Gerd
dc.date.accessioned2024-05-28T20:24:50Z
dc.date.available2024-05-28T20:24:50Z
dc.date.issued2024
dc.identifier.urihttp://repositorio.ucm.cl/handle/ucm/5403
dc.description.abstractThe 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.es_CL
dc.language.isoenes_CL
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
dc.sourceTectonophysics, 880, 230320es_CL
dc.subjectSubduction zoneses_CL
dc.subjectAntarctic platees_CL
dc.subjectSouthern Patagonia Icefieldes_CL
dc.subjectIce-mass removal seismicityes_CL
dc.subjectRegional stresses_CL
dc.titleFault reactivation linked to rapid ice-mass removal from the Southern Patagonian Icefield (48–52°S)es_CL
dc.typeArticlees_CL
dc.ucm.facultadFacultad de Ciencias de la Ingenieríaes_CL
dc.ucm.indexacionScopuses_CL
dc.ucm.indexacionIsies_CL
dc.ucm.urisciencedirect.ucm.elogim.com/science/article/pii/S0040195124001227?via%3Dihubes_CL
dc.ucm.doidoi.org/10.1016/j.tecto.2024.230320es_CL


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