Influence of Incoming Plate Relief on Overriding Plate Deformation and Earthquake Nucleation: Cocos Ridge Subduction (Costa Rica)

18 pages, 7 figures, supporting information https://doi.org/10.1029/2019TC005586.-- Data are available at the PANGAEA world data center https://doi.org/10.1594/PANGAEA.909047

Detalles Bibliográficos
Autores: Martínez-Loriente, S., Sallarès, Valentí, Ranero, César R., Ruh, Jonas Bruno, Barckhausen, Udo, Grevemeyer, Ingo, Bangs, Nathan L.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/199535
Acceso en línea:http://hdl.handle.net/10261/199535
Access Level:acceso abierto
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spelling Influence of Incoming Plate Relief on Overriding Plate Deformation and Earthquake Nucleation: Cocos Ridge Subduction (Costa Rica)Martínez-Loriente, S.Sallarès, ValentíRanero, César R.Ruh, Jonas BrunoBarckhausen, UdoGrevemeyer, IngoBangs, Nathan L.18 pages, 7 figures, supporting information https://doi.org/10.1029/2019TC005586.-- Data are available at the PANGAEA world data center https://doi.org/10.1594/PANGAEA.909047We present a 2‐D P wave velocity model and a coincident multichannel seismic reflection profile characterizing the structure of the southern Costa Rica margin and incoming Cocos Ridge. The seismic profiles image the ocean and overriding plates from the trench across the entire offshore margin, including the structures involved in the 2002 Osa earthquake. The overriding plate consists of three domains: Domain I displays thin‐skinned deformation of an imbricate thrust system composed of fractured rocks. Domain II shows ~15‐km‐long landward dipping reflection packages and active deformation of the shelf sediment. Domain III is little fractured and appears to be dominated by elastic deformation, overlain by ~2‐km‐thick landward dipping strata. The velocity structure supports the argument that the bulk of the margin is highly consolidated rock. Thick‐skinned tectonics probably causes the uplift of Domains II and III. The oceanic plate shows crustal thickness variations from ~14 km at the trench (Cocos Ridge) to 6–7 km beneath the shelf. We combine (1) interplate geometry and fracturing degree, (2) tectonic stresses and brittle strain, and (3) earthquake locations, to investigate relationships between structure and earthquake generation. The 2002 Osa sequence nucleated at the leading flank of subducting seamounts in the area of highest tectonic overpressure. Both estimated rock fracturing and modeled brittle strain steadily increase from the leading flank of the subducting seamounts to their top, reflecting the progressive damage caused by the seamount. Therefore, the seismicity and structural‐mechanical evolution of the upper plate reflect the downward propagation of the leading edge of seamountsThis research was supported by E‐FIRE (PCIN‐2015‐053) and FRAME (CTM2015‐71766‐R) projects, as well as the People Programme (Marie Curie Actions) under REA Grant Agreement 604713 (ZIP “Zooming In between Plates”)Peer reviewedAmerican Geophysical UnionMinisterio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202020202019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/199535reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2015-71766-Rhttps://doi.org/10.1029/2019TC005586Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1995352026-05-22T06:33:51Z
dc.title.none.fl_str_mv Influence of Incoming Plate Relief on Overriding Plate Deformation and Earthquake Nucleation: Cocos Ridge Subduction (Costa Rica)
title Influence of Incoming Plate Relief on Overriding Plate Deformation and Earthquake Nucleation: Cocos Ridge Subduction (Costa Rica)
spellingShingle Influence of Incoming Plate Relief on Overriding Plate Deformation and Earthquake Nucleation: Cocos Ridge Subduction (Costa Rica)
Martínez-Loriente, S.
title_short Influence of Incoming Plate Relief on Overriding Plate Deformation and Earthquake Nucleation: Cocos Ridge Subduction (Costa Rica)
title_full Influence of Incoming Plate Relief on Overriding Plate Deformation and Earthquake Nucleation: Cocos Ridge Subduction (Costa Rica)
title_fullStr Influence of Incoming Plate Relief on Overriding Plate Deformation and Earthquake Nucleation: Cocos Ridge Subduction (Costa Rica)
title_full_unstemmed Influence of Incoming Plate Relief on Overriding Plate Deformation and Earthquake Nucleation: Cocos Ridge Subduction (Costa Rica)
title_sort Influence of Incoming Plate Relief on Overriding Plate Deformation and Earthquake Nucleation: Cocos Ridge Subduction (Costa Rica)
dc.creator.none.fl_str_mv Martínez-Loriente, S.
Sallarès, Valentí
Ranero, César R.
Ruh, Jonas Bruno
Barckhausen, Udo
Grevemeyer, Ingo
Bangs, Nathan L.
author Martínez-Loriente, S.
author_facet Martínez-Loriente, S.
Sallarès, Valentí
Ranero, César R.
Ruh, Jonas Bruno
Barckhausen, Udo
Grevemeyer, Ingo
Bangs, Nathan L.
author_role author
author2 Sallarès, Valentí
Ranero, César R.
Ruh, Jonas Bruno
Barckhausen, Udo
Grevemeyer, Ingo
Bangs, Nathan L.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description 18 pages, 7 figures, supporting information https://doi.org/10.1029/2019TC005586.-- Data are available at the PANGAEA world data center https://doi.org/10.1594/PANGAEA.909047
publishDate 2019
dc.date.none.fl_str_mv 2019
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/199535
url http://hdl.handle.net/10261/199535
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2015-71766-R
https://doi.org/10.1029/2019TC005586
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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