Recurrence time and size of Chilean earthquakes influenced by geological structure

Simple item page
dc.contributor.authorJulve, Joaquin
dc.contributor.authorBarbot, Sylvain
dc.contributor.authorMoreno, Marcos
dc.contributor.authorTassara, Andres
dc.contributor.authorAraya, Rodolfo
dc.contributor.authorCatalan, Nicole
dc.contributor.authorCrempien, Jorge G. F.
dc.contributor.authorBecerra-Carreno, Valeria
dc.date.accessioned2025-01-20T17:11:02Z
dc.date.available2025-01-20T17:11:02Z
dc.date.issued2024
dc.description.abstractIn 1960, the giant Valdivia earthquake (moment magnitude, Mw, 9.5), the largest earthquake ever recorded, struck the Chilean subduction zone, rupturing the entire depth of the seismogenic zone and extending for 1,000 km along strike. The first sign of new seismic energy release since 1960 occurred in 2017 with the Melinka earthquake (Mw 7.6), which affected only a portion of the deepest part of the seismogenic zone. Despite the recognition that rupture characteristics and rheology vary with depth, the mechanical controls behind such variations of earthquake size remain elusive. Here we build quasi-dynamic simulations of the seismic cycle in southern Chile including frictional and viscoelastic properties, drawing upon a compilation of geological and geophysical insights to explain the recurrence times of recent, historic, and palaeoseismic earthquakes and the distribution of fault slip and crustal deformation associated with the Melinka and Valdivia earthquakes. We find that the frictional and rheological properties of the forearc, which are primarily controlled by the geological structure and fluid distribution at the megathrust, govern the magnitude and recurrence patterns of earthquakes in Chile.
dc.description.abstractGeological structure and pore fluid pressure in the subduction zone forearc govern the size and recurrence of megathrust earthquakes in Chile, according to quasi-dynamic simulations of the seismic cycle.
dc.fuente.origenWOS
dc.identifier.doi10.1038/s41561-023-01327-8
dc.identifier.eissn1752-0908
dc.identifier.issn1752-0894
dc.identifier.urihttps://doi.org/10.1038/s41561-023-01327-8
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/91154
dc.identifier.wosidWOS:001125956000002
dc.issue.numero1
dc.language.isoen
dc.revistaNature geoscience
dc.rightsacceso restringido
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titleRecurrence time and size of Chilean earthquakes influenced by geological structure
dc.typeartículo
dc.volumen17
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
Files
Collections
Artículos de revistas