Analog and numerical experiments of double subduction systems with opposite polarity in adjacent segments

In this work we study the dynamics of double subduction systems with opposite polarity in adjacent segments. A combined approach of numerical and analog experiments allows us to compare results and exploit the strengths of both methodologies. High-resolution numerical experiments complement laborato...

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Autores: Peral, Mireia, Ruh, Jonas, Zlotnik, Sergio|||0000-0001-9674-8950, Funiciello, Francesca, Fernandez Ortiga, Manel, Vergés Masip, Jaume, Gerya, Taras
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/335922
Acceso en línea:https://hdl.handle.net/2117/335922
https://dx.doi.org/10.1029/2020GC009035
Access Level:acceso abierto
Palabra clave:Strength of materials
mantle flow/plate interaction
numerical and analog models
trench retreat
trench curvature
plate deformation
Resistència de materials
Classificació AMS::74 Mechanics of deformable solids::74S Numerical methods
Classificació AMS::74 Mechanics of deformable solids::74H Dynamical problems
Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes numèrics
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spelling Analog and numerical experiments of double subduction systems with opposite polarity in adjacent segmentsPeral, MireiaRuh, JonasZlotnik, Sergio|||0000-0001-9674-8950Funiciello, FrancescaFernandez Ortiga, ManelVergés Masip, JaumeGerya, TarasStrength of materialsmantle flow/plate interactionnumerical and analog modelstrench retreattrench curvatureplate deformationResistència de materialsClassificació AMS::74 Mechanics of deformable solids::74S Numerical methodsClassificació AMS::74 Mechanics of deformable solids::74H Dynamical problemsÀrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes numèricsIn this work we study the dynamics of double subduction systems with opposite polarity in adjacent segments. A combined approach of numerical and analog experiments allows us to compare results and exploit the strengths of both methodologies. High-resolution numerical experiments complement laboratory results by providing quantities difficult to measure in the laboratory such as stress state, flow patterns, and energy dissipation. Results show strong asymmetries in the mantle flow that produce in turn asymmetries in the trench and in the downgoing slab deformation. The mantle flow pattern varies with time; the toroidal cells between the plates evolve until merging into one unique cell when the trenches align. In that moment the maximum upward flow is observed close to the trenches. The interaction between the mantle flow produced by each subducting plate makes the rollback processes slower than in a single subduction case. This is consistent with the observed energy dissipation rate that is smaller in the double subduction system than in two single subductions. Moreover, we provide a detailed analysis on the setup and boundary conditions required to numerically reproduce the analog experiments. Boundary conditions at the bottom of the domain are crucial to reproduce their analog counterparts. Numerical results are compared to natural examples of multi-slab subduction systems in terms of upper mantle seismic anisotropy, relative trench retreat velocities, and composition of subduction-related magmatism.Peer Reviewed20202020-06-0120212021-01-25journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/335922https://dx.doi.org/10.1029/2020GC009035reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengEuropean Commission http://doi.org/10.13039/100010661 Horizon 2020 Framework Programme 777778 Multiscale Inversion of Porous Rock Physics using High-Performance Simulators: Bridging the Gap between Mathematics and GeophysicsAgencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 DPI2017-85139-C2-2-R ASIMILACION DE DATOS PARA UNA SIMULACION INGENIERIL CREIBLEopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3359222026-05-27T15:37:01Z
dc.title.none.fl_str_mv Analog and numerical experiments of double subduction systems with opposite polarity in adjacent segments
title Analog and numerical experiments of double subduction systems with opposite polarity in adjacent segments
spellingShingle Analog and numerical experiments of double subduction systems with opposite polarity in adjacent segments
Peral, Mireia
Strength of materials
mantle flow/plate interaction
numerical and analog models
trench retreat
trench curvature
plate deformation
Resistència de materials
Classificació AMS::74 Mechanics of deformable solids::74S Numerical methods
Classificació AMS::74 Mechanics of deformable solids::74H Dynamical problems
Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes numèrics
title_short Analog and numerical experiments of double subduction systems with opposite polarity in adjacent segments
title_full Analog and numerical experiments of double subduction systems with opposite polarity in adjacent segments
title_fullStr Analog and numerical experiments of double subduction systems with opposite polarity in adjacent segments
title_full_unstemmed Analog and numerical experiments of double subduction systems with opposite polarity in adjacent segments
title_sort Analog and numerical experiments of double subduction systems with opposite polarity in adjacent segments
dc.creator.none.fl_str_mv Peral, Mireia
Ruh, Jonas
Zlotnik, Sergio|||0000-0001-9674-8950
Funiciello, Francesca
Fernandez Ortiga, Manel
Vergés Masip, Jaume
Gerya, Taras
author Peral, Mireia
author_facet Peral, Mireia
Ruh, Jonas
Zlotnik, Sergio|||0000-0001-9674-8950
Funiciello, Francesca
Fernandez Ortiga, Manel
Vergés Masip, Jaume
Gerya, Taras
author_role author
author2 Ruh, Jonas
Zlotnik, Sergio|||0000-0001-9674-8950
Funiciello, Francesca
Fernandez Ortiga, Manel
Vergés Masip, Jaume
Gerya, Taras
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Strength of materials
mantle flow/plate interaction
numerical and analog models
trench retreat
trench curvature
plate deformation
Resistència de materials
Classificació AMS::74 Mechanics of deformable solids::74S Numerical methods
Classificació AMS::74 Mechanics of deformable solids::74H Dynamical problems
Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes numèrics
topic Strength of materials
mantle flow/plate interaction
numerical and analog models
trench retreat
trench curvature
plate deformation
Resistència de materials
Classificació AMS::74 Mechanics of deformable solids::74S Numerical methods
Classificació AMS::74 Mechanics of deformable solids::74H Dynamical problems
Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes numèrics
description In this work we study the dynamics of double subduction systems with opposite polarity in adjacent segments. A combined approach of numerical and analog experiments allows us to compare results and exploit the strengths of both methodologies. High-resolution numerical experiments complement laboratory results by providing quantities difficult to measure in the laboratory such as stress state, flow patterns, and energy dissipation. Results show strong asymmetries in the mantle flow that produce in turn asymmetries in the trench and in the downgoing slab deformation. The mantle flow pattern varies with time; the toroidal cells between the plates evolve until merging into one unique cell when the trenches align. In that moment the maximum upward flow is observed close to the trenches. The interaction between the mantle flow produced by each subducting plate makes the rollback processes slower than in a single subduction case. This is consistent with the observed energy dissipation rate that is smaller in the double subduction system than in two single subductions. Moreover, we provide a detailed analysis on the setup and boundary conditions required to numerically reproduce the analog experiments. Boundary conditions at the bottom of the domain are crucial to reproduce their analog counterparts. Numerical results are compared to natural examples of multi-slab subduction systems in terms of upper mantle seismic anisotropy, relative trench retreat velocities, and composition of subduction-related magmatism.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020-06-01
2021
2021-01-25
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/335922
https://dx.doi.org/10.1029/2020GC009035
url https://hdl.handle.net/2117/335922
https://dx.doi.org/10.1029/2020GC009035
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission http://doi.org/10.13039/100010661 Horizon 2020 Framework Programme 777778 Multiscale Inversion of Porous Rock Physics using High-Performance Simulators: Bridging the Gap between Mathematics and Geophysics
Agencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 DPI2017-85139-C2-2-R ASIMILACION DE DATOS PARA UNA SIMULACION INGENIERIL CREIBLE
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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