Emplacement of massive turbidites linked to extinction of turbulence in turbidity currents

Autores
Cantero, Mariano Ignacio; Cantelli, Alessandro; Pirmez, Carlos; Balachandar, S.; Mohrig, David; Hickson, Thomas; Yeh, Tzu-hao; Naruse, Hajime; Parker, Gary
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Unlike river systems which are controlled by the gravitational pull of water, submarine turbidity currents are controlled by the gravitational pull of suspended sediments. The suspended sediments in turn pull water downslope along with them. Turbidity currents also transport sediments at the base of the flow, which causes the reorganization of basal sediments prior to the settling of suspended grains. However, as turbidity currents reach areas with minimal slope, they cross a threshold beyond which the suspended sediments begin to stratify the flow. This process extinguishes the turbulence near the bed. Here we use direct numerical simulation (DNS) to show that this extinction of turbulence eliminates the ability of the flow to re-entrain sediment and rework the sediment in the bed of the flow. Our simulations indicate that the lack of reworking at the base of the flow leads to deposits that lack internal structures such as laminations. Sustained delivery of suspended sediments will therefore result in the emplacement of massive turbidites. We suggest that this mechanism can explain field observations of massive deposits that were emplaced gradually by dilute but powerful turbidity currents. We also conclude that turbulence in submarine turbidity currents is more fragile than that of river systems, and more sensitive to damping by the stratification of suspended sediment in the flow.
Fil: Cantero, Mariano Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina. Universidad Nacional de Cuyo; Argentina. University Of Illinois At Urbana; Estados Unidos
Fil: Cantelli, Alessandro. Shell International Exploration and Production Inc.; Estados Unidos
Fil: Pirmez, Carlos. Shell International Exploration and Production Inc.; Estados Unidos
Fil: Balachandar, S.. University Of Florida; Estados Unidos
Fil: Mohrig, David. University Of Texas; Estados Unidos
Fil: Hickson, Thomas. University of St Thomas. Department of Geology; Estados Unidos
Fil: Yeh, Tzu-hao. University Of Illinois At Urbana; Estados Unidos
Fil: Naruse, Hajime. Chiba University. Faculty of Science. Department of Earth Sciences; Japón
Fil: Parker, Gary. University Of Illinois At Urbana; Estados Unidos
Materia
Turbidity Currents
Sedimentary Deposits
Direct Numerical Simulation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/11294
Acceder
id CONICETDig_92afdee66f5314c8869ac9e310861ef4
oai_identifier_str oai:ri.conicet.gov.ar:11336/11294
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network_name_str CONICET Digital (CONICET)
spelling Emplacement of massive turbidites linked to extinction of turbulence in turbidity currentsCantero, Mariano IgnacioCantelli, AlessandroPirmez, CarlosBalachandar, S.Mohrig, DavidHickson, ThomasYeh, Tzu-haoNaruse, HajimeParker, GaryTurbidity CurrentsSedimentary DepositsDirect Numerical Simulationhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Unlike river systems which are controlled by the gravitational pull of water, submarine turbidity currents are controlled by the gravitational pull of suspended sediments. The suspended sediments in turn pull water downslope along with them. Turbidity currents also transport sediments at the base of the flow, which causes the reorganization of basal sediments prior to the settling of suspended grains. However, as turbidity currents reach areas with minimal slope, they cross a threshold beyond which the suspended sediments begin to stratify the flow. This process extinguishes the turbulence near the bed. Here we use direct numerical simulation (DNS) to show that this extinction of turbulence eliminates the ability of the flow to re-entrain sediment and rework the sediment in the bed of the flow. Our simulations indicate that the lack of reworking at the base of the flow leads to deposits that lack internal structures such as laminations. Sustained delivery of suspended sediments will therefore result in the emplacement of massive turbidites. We suggest that this mechanism can explain field observations of massive deposits that were emplaced gradually by dilute but powerful turbidity currents. We also conclude that turbulence in submarine turbidity currents is more fragile than that of river systems, and more sensitive to damping by the stratification of suspended sediment in the flow.Fil: Cantero, Mariano Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina. Universidad Nacional de Cuyo; Argentina. University Of Illinois At Urbana; Estados UnidosFil: Cantelli, Alessandro. Shell International Exploration and Production Inc.; Estados UnidosFil: Pirmez, Carlos. Shell International Exploration and Production Inc.; Estados UnidosFil: Balachandar, S.. University Of Florida; Estados UnidosFil: Mohrig, David. University Of Texas; Estados UnidosFil: Hickson, Thomas. University of St Thomas. Department of Geology; Estados UnidosFil: Yeh, Tzu-hao. University Of Illinois At Urbana; Estados UnidosFil: Naruse, Hajime. Chiba University. Faculty of Science. Department of Earth Sciences; JapónFil: Parker, Gary. University Of Illinois At Urbana; Estados UnidosNature Publishing Group2012-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/11294Cantero, Mariano Ignacio; Cantelli, Alessandro; Pirmez, Carlos; Balachandar, S.; Mohrig, David; et al.; Emplacement of massive turbidites linked to extinction of turbulence in turbidity currents; Nature Publishing Group; Nature Geoscience; 5; 1-2012; 42-451752-0894enginfo:eu-repo/semantics/altIdentifier/url/http://www.nature.com/ngeo/journal/v5/n1/full/ngeo1320.htmlinfo:eu-repo/semantics/altIdentifier/doi/10.1038/ngeo1320info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:36:59Zoai:ri.conicet.gov.ar:11336/11294instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:36:59.984CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Emplacement of massive turbidites linked to extinction of turbulence in turbidity currents
title Emplacement of massive turbidites linked to extinction of turbulence in turbidity currents
spellingShingle Emplacement of massive turbidites linked to extinction of turbulence in turbidity currents
Cantero, Mariano Ignacio
Turbidity Currents
Sedimentary Deposits
Direct Numerical Simulation
title_short Emplacement of massive turbidites linked to extinction of turbulence in turbidity currents
title_full Emplacement of massive turbidites linked to extinction of turbulence in turbidity currents
title_fullStr Emplacement of massive turbidites linked to extinction of turbulence in turbidity currents
title_full_unstemmed Emplacement of massive turbidites linked to extinction of turbulence in turbidity currents
title_sort Emplacement of massive turbidites linked to extinction of turbulence in turbidity currents
dc.creator.none.fl_str_mv Cantero, Mariano Ignacio
Cantelli, Alessandro
Pirmez, Carlos
Balachandar, S.
Mohrig, David
Hickson, Thomas
Yeh, Tzu-hao
Naruse, Hajime
Parker, Gary
author Cantero, Mariano Ignacio
author_facet Cantero, Mariano Ignacio
Cantelli, Alessandro
Pirmez, Carlos
Balachandar, S.
Mohrig, David
Hickson, Thomas
Yeh, Tzu-hao
Naruse, Hajime
Parker, Gary
author_role author
author2 Cantelli, Alessandro
Pirmez, Carlos
Balachandar, S.
Mohrig, David
Hickson, Thomas
Yeh, Tzu-hao
Naruse, Hajime
Parker, Gary
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Turbidity Currents
Sedimentary Deposits
Direct Numerical Simulation
topic Turbidity Currents
Sedimentary Deposits
Direct Numerical Simulation
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Unlike river systems which are controlled by the gravitational pull of water, submarine turbidity currents are controlled by the gravitational pull of suspended sediments. The suspended sediments in turn pull water downslope along with them. Turbidity currents also transport sediments at the base of the flow, which causes the reorganization of basal sediments prior to the settling of suspended grains. However, as turbidity currents reach areas with minimal slope, they cross a threshold beyond which the suspended sediments begin to stratify the flow. This process extinguishes the turbulence near the bed. Here we use direct numerical simulation (DNS) to show that this extinction of turbulence eliminates the ability of the flow to re-entrain sediment and rework the sediment in the bed of the flow. Our simulations indicate that the lack of reworking at the base of the flow leads to deposits that lack internal structures such as laminations. Sustained delivery of suspended sediments will therefore result in the emplacement of massive turbidites. We suggest that this mechanism can explain field observations of massive deposits that were emplaced gradually by dilute but powerful turbidity currents. We also conclude that turbulence in submarine turbidity currents is more fragile than that of river systems, and more sensitive to damping by the stratification of suspended sediment in the flow.
Fil: Cantero, Mariano Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Area de Investigación y Aplicaciones No Nucleares. Gerencia de Física (Centro Atómico Bariloche); Argentina. Universidad Nacional de Cuyo; Argentina. University Of Illinois At Urbana; Estados Unidos
Fil: Cantelli, Alessandro. Shell International Exploration and Production Inc.; Estados Unidos
Fil: Pirmez, Carlos. Shell International Exploration and Production Inc.; Estados Unidos
Fil: Balachandar, S.. University Of Florida; Estados Unidos
Fil: Mohrig, David. University Of Texas; Estados Unidos
Fil: Hickson, Thomas. University of St Thomas. Department of Geology; Estados Unidos
Fil: Yeh, Tzu-hao. University Of Illinois At Urbana; Estados Unidos
Fil: Naruse, Hajime. Chiba University. Faculty of Science. Department of Earth Sciences; Japón
Fil: Parker, Gary. University Of Illinois At Urbana; Estados Unidos
description Unlike river systems which are controlled by the gravitational pull of water, submarine turbidity currents are controlled by the gravitational pull of suspended sediments. The suspended sediments in turn pull water downslope along with them. Turbidity currents also transport sediments at the base of the flow, which causes the reorganization of basal sediments prior to the settling of suspended grains. However, as turbidity currents reach areas with minimal slope, they cross a threshold beyond which the suspended sediments begin to stratify the flow. This process extinguishes the turbulence near the bed. Here we use direct numerical simulation (DNS) to show that this extinction of turbulence eliminates the ability of the flow to re-entrain sediment and rework the sediment in the bed of the flow. Our simulations indicate that the lack of reworking at the base of the flow leads to deposits that lack internal structures such as laminations. Sustained delivery of suspended sediments will therefore result in the emplacement of massive turbidites. We suggest that this mechanism can explain field observations of massive deposits that were emplaced gradually by dilute but powerful turbidity currents. We also conclude that turbulence in submarine turbidity currents is more fragile than that of river systems, and more sensitive to damping by the stratification of suspended sediment in the flow.
publishDate 2012
dc.date.none.fl_str_mv 2012-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/11294
Cantero, Mariano Ignacio; Cantelli, Alessandro; Pirmez, Carlos; Balachandar, S.; Mohrig, David; et al.; Emplacement of massive turbidites linked to extinction of turbulence in turbidity currents; Nature Publishing Group; Nature Geoscience; 5; 1-2012; 42-45
1752-0894
url http://hdl.handle.net/11336/11294
identifier_str_mv Cantero, Mariano Ignacio; Cantelli, Alessandro; Pirmez, Carlos; Balachandar, S.; Mohrig, David; et al.; Emplacement of massive turbidites linked to extinction of turbulence in turbidity currents; Nature Publishing Group; Nature Geoscience; 5; 1-2012; 42-45
1752-0894
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/ngeo/journal/v5/n1/full/ngeo1320.html
info:eu-repo/semantics/altIdentifier/doi/10.1038/ngeo1320
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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