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dc.contributor.author Socquet, Anne
dc.contributor.author Piña Valdes, Jesús
dc.contributor.author Jara, Jorge
dc.contributor.author Cotton, Fabrice
dc.contributor.author Walpersdorf, Andrea
dc.contributor.author Cotte, Nathalie
dc.contributor.author Specht, Sebastian
dc.contributor.author Ortega‐Culaciati, Francisco
dc.contributor.author Carrizo, Daniel
dc.contributor.author Norabuena Ortiz, Edmundo
dc.coverage.spatial Chile
dc.date.accessioned 2018-08-03T16:40:07Z
dc.date.available 2018-08-03T16:40:07Z
dc.date.issued 2017-05-16
dc.identifier.citation Socquet, A., Piña, J., Jara, J., Cotton, F., Walpersdorf, A., Cotte, N., ... Norabuena, E. (2017). An 8 month slow slip event triggers progressive nucleation of the 2014 Chile megathrust.==$Geophysical Research Letters, 44$==(9), 4046-4053. https://doi.org/10.1002/2017GL073023 es_ES
dc.identifier.govdoc index-oti2018
dc.identifier.uri http://hdl.handle.net/20.500.12816/2236
dc.description.abstract The mechanisms leading to large earthquakes are poorly understood and documented. Here we characterize the long‐term precursory phase of the 1 April 2014 Mw8.1 North Chile megathrust. We show that a group of coastal GPS stations accelerated westward 8 months before the main shock, corresponding to a Mw6.5 slow slip event on the subduction interface, 80% of which was aseismic. Concurrent interface foreshocks underwent a diminution of their radiation at high frequency, as shown by the temporal evolution of Fourier spectra and residuals with respect to ground motions predicted by recent subduction models. Such ground motions change suggests that in response to the slow sliding of the subduction interface, seismic ruptures are progressively becoming smoother and/or slower. The gradual propagation of seismic ruptures beyond seismic asperities into surrounding metastable areas could explain these observations and might be the precursory mechanism eventually leading to the main shock. es_ES
dc.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher American Geophysical Union es_ES
dc.relation.ispartof urn:issn:0094-8276
dc.rights info:eu-repo/semantics/openAccess es_ES
dc.rights.uri https://creativecommons.org/licences/by/4.0/ es_ES
dc.subject Earthquakes es_ES
dc.subject Seismic station es_ES
dc.subject Global positioning system es_ES
dc.subject Landslides es_ES
dc.subject Subduction es_ES
dc.subject Earthworks es_ES
dc.subject Seismology es_ES
dc.title An 8 month slow slip event triggers progressive nucleation of the 2014 Chile megathrust es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.00 es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.04 es_ES
dc.identifier.journal Geophysical Research Letters es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.1002/2017GL073023 es_ES

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