Sediment Transit Time and Floodplain Storage Dynamics in Alluvial Rivers Revealed by Meteoric 10Be

Autores
Repasch, Marisa; Wittmann, Hella; Scheingross, Joel S.; Sachse, Dirk; Szupiany, Ricardo Nicolas; Orfeo, Oscar; Fuchs, Margret; Hovius, Niels
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Quantifying the time scales of sediment transport and storage through river systems is fundamental for understanding weathering processes, biogeochemical cycling, and improving watershed management, but measuring sediment transit time is challenging. Here we provide the first systematic test of measuring cosmogenic meteoric Beryllium-10 (10Bem) in the sediment load of a large alluvial river to quantify sediment transit times. We take advantage of a natural experiment in the Rio Bermejo, a lowland alluvial river traversing the east Andean foreland basin in northern Argentina. This river has no tributaries along its trunk channel for nearly 1,300 km downstream from the mountain front. We sampled suspended sediment depth profiles along the channel and measured the concentrations of 10Bem in the chemically extracted grain coatings. We calculated depth-integrated 10Bem concentrations using sediment flux data and found that 10Bem concentrations increase 230% from upstream to downstream, indicating a mean total sediment transit time of 8.4 ± 2.2 kyr. Bulk sediment budget-based estimates of channel belt and fan storage times suggest that the 10Bem tracer records mixing of old and young sediment reservoirs. On a reach scale, 10Bem transit times are shorter where the channel is braided and superelevated above the floodplain, and longer where the channel is incised and meandering, suggesting that transit time is controlled by channel morphodynamics. This is the first systematic application of 10Bem as a sediment transit time tracer and highlights the method's potential for inferring sediment routing and storage dynamics in large river systems.
Fil: Repasch, Marisa. Gfz German Research Centre For Geosciences; Alemania. Universitat Potsdam; Alemania
Fil: Wittmann, Hella. Gfz German Research Centre For Geosciences; Alemania
Fil: Scheingross, Joel S.. Gfz German Research Centre For Geosciences; Alemania
Fil: Sachse, Dirk. Gfz German Research Centre For Geosciences; Alemania
Fil: Szupiany, Ricardo Nicolas. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
Fil: Orfeo, Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
Fil: Fuchs, Margret. Helmholtz Institute Freiberg For Resourcetechnology; Alemania
Fil: Hovius, Niels. Gfz German Research Centre For Geosciences; Alemania
Materia
FLOODPLAINS
METEORIC 10BE
RIVER SEDIMENT
SEDIMENT ROUTING
SEDIMENT TRANSIT TIME
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/174616
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Sediment Transit Time and Floodplain Storage Dynamics in Alluvial Rivers Revealed by Meteoric 10BeRepasch, MarisaWittmann, HellaScheingross, Joel S.Sachse, DirkSzupiany, Ricardo NicolasOrfeo, OscarFuchs, MargretHovius, NielsFLOODPLAINSMETEORIC 10BERIVER SEDIMENTSEDIMENT ROUTINGSEDIMENT TRANSIT TIMEhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Quantifying the time scales of sediment transport and storage through river systems is fundamental for understanding weathering processes, biogeochemical cycling, and improving watershed management, but measuring sediment transit time is challenging. Here we provide the first systematic test of measuring cosmogenic meteoric Beryllium-10 (10Bem) in the sediment load of a large alluvial river to quantify sediment transit times. We take advantage of a natural experiment in the Rio Bermejo, a lowland alluvial river traversing the east Andean foreland basin in northern Argentina. This river has no tributaries along its trunk channel for nearly 1,300 km downstream from the mountain front. We sampled suspended sediment depth profiles along the channel and measured the concentrations of 10Bem in the chemically extracted grain coatings. We calculated depth-integrated 10Bem concentrations using sediment flux data and found that 10Bem concentrations increase 230% from upstream to downstream, indicating a mean total sediment transit time of 8.4 ± 2.2 kyr. Bulk sediment budget-based estimates of channel belt and fan storage times suggest that the 10Bem tracer records mixing of old and young sediment reservoirs. On a reach scale, 10Bem transit times are shorter where the channel is braided and superelevated above the floodplain, and longer where the channel is incised and meandering, suggesting that transit time is controlled by channel morphodynamics. This is the first systematic application of 10Bem as a sediment transit time tracer and highlights the method's potential for inferring sediment routing and storage dynamics in large river systems.Fil: Repasch, Marisa. Gfz German Research Centre For Geosciences; Alemania. Universitat Potsdam; AlemaniaFil: Wittmann, Hella. Gfz German Research Centre For Geosciences; AlemaniaFil: Scheingross, Joel S.. Gfz German Research Centre For Geosciences; AlemaniaFil: Sachse, Dirk. Gfz German Research Centre For Geosciences; AlemaniaFil: Szupiany, Ricardo Nicolas. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; ArgentinaFil: Orfeo, Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; ArgentinaFil: Fuchs, Margret. Helmholtz Institute Freiberg For Resourcetechnology; AlemaniaFil: Hovius, Niels. Gfz German Research Centre For Geosciences; AlemaniaBlackwell Publishing2020-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/174616Repasch, Marisa; Wittmann, Hella; Scheingross, Joel S.; Sachse, Dirk; Szupiany, Ricardo Nicolas; et al.; Sediment Transit Time and Floodplain Storage Dynamics in Alluvial Rivers Revealed by Meteoric 10Be; Blackwell Publishing; Journal of Geophysical Research: Earth Surface; 125; 7; 6-2020; 1-192169-90032169-9011CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1029/2019JF005419info:eu-repo/semantics/altIdentifier/doi/10.1029/2019JF005419info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:25:00Zoai:ri.conicet.gov.ar:11336/174616instacron: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 10:25:01.285CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Sediment Transit Time and Floodplain Storage Dynamics in Alluvial Rivers Revealed by Meteoric 10Be
title Sediment Transit Time and Floodplain Storage Dynamics in Alluvial Rivers Revealed by Meteoric 10Be
spellingShingle Sediment Transit Time and Floodplain Storage Dynamics in Alluvial Rivers Revealed by Meteoric 10Be
Repasch, Marisa
FLOODPLAINS
METEORIC 10BE
RIVER SEDIMENT
SEDIMENT ROUTING
SEDIMENT TRANSIT TIME
title_short Sediment Transit Time and Floodplain Storage Dynamics in Alluvial Rivers Revealed by Meteoric 10Be
title_full Sediment Transit Time and Floodplain Storage Dynamics in Alluvial Rivers Revealed by Meteoric 10Be
title_fullStr Sediment Transit Time and Floodplain Storage Dynamics in Alluvial Rivers Revealed by Meteoric 10Be
title_full_unstemmed Sediment Transit Time and Floodplain Storage Dynamics in Alluvial Rivers Revealed by Meteoric 10Be
title_sort Sediment Transit Time and Floodplain Storage Dynamics in Alluvial Rivers Revealed by Meteoric 10Be
dc.creator.none.fl_str_mv Repasch, Marisa
Wittmann, Hella
Scheingross, Joel S.
Sachse, Dirk
Szupiany, Ricardo Nicolas
Orfeo, Oscar
Fuchs, Margret
Hovius, Niels
author Repasch, Marisa
author_facet Repasch, Marisa
Wittmann, Hella
Scheingross, Joel S.
Sachse, Dirk
Szupiany, Ricardo Nicolas
Orfeo, Oscar
Fuchs, Margret
Hovius, Niels
author_role author
author2 Wittmann, Hella
Scheingross, Joel S.
Sachse, Dirk
Szupiany, Ricardo Nicolas
Orfeo, Oscar
Fuchs, Margret
Hovius, Niels
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv FLOODPLAINS
METEORIC 10BE
RIVER SEDIMENT
SEDIMENT ROUTING
SEDIMENT TRANSIT TIME
topic FLOODPLAINS
METEORIC 10BE
RIVER SEDIMENT
SEDIMENT ROUTING
SEDIMENT TRANSIT TIME
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Quantifying the time scales of sediment transport and storage through river systems is fundamental for understanding weathering processes, biogeochemical cycling, and improving watershed management, but measuring sediment transit time is challenging. Here we provide the first systematic test of measuring cosmogenic meteoric Beryllium-10 (10Bem) in the sediment load of a large alluvial river to quantify sediment transit times. We take advantage of a natural experiment in the Rio Bermejo, a lowland alluvial river traversing the east Andean foreland basin in northern Argentina. This river has no tributaries along its trunk channel for nearly 1,300 km downstream from the mountain front. We sampled suspended sediment depth profiles along the channel and measured the concentrations of 10Bem in the chemically extracted grain coatings. We calculated depth-integrated 10Bem concentrations using sediment flux data and found that 10Bem concentrations increase 230% from upstream to downstream, indicating a mean total sediment transit time of 8.4 ± 2.2 kyr. Bulk sediment budget-based estimates of channel belt and fan storage times suggest that the 10Bem tracer records mixing of old and young sediment reservoirs. On a reach scale, 10Bem transit times are shorter where the channel is braided and superelevated above the floodplain, and longer where the channel is incised and meandering, suggesting that transit time is controlled by channel morphodynamics. This is the first systematic application of 10Bem as a sediment transit time tracer and highlights the method's potential for inferring sediment routing and storage dynamics in large river systems.
Fil: Repasch, Marisa. Gfz German Research Centre For Geosciences; Alemania. Universitat Potsdam; Alemania
Fil: Wittmann, Hella. Gfz German Research Centre For Geosciences; Alemania
Fil: Scheingross, Joel S.. Gfz German Research Centre For Geosciences; Alemania
Fil: Sachse, Dirk. Gfz German Research Centre For Geosciences; Alemania
Fil: Szupiany, Ricardo Nicolas. Universidad Nacional del Litoral. Facultad de Ingeniería y Ciencias Hídricas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina
Fil: Orfeo, Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
Fil: Fuchs, Margret. Helmholtz Institute Freiberg For Resourcetechnology; Alemania
Fil: Hovius, Niels. Gfz German Research Centre For Geosciences; Alemania
description Quantifying the time scales of sediment transport and storage through river systems is fundamental for understanding weathering processes, biogeochemical cycling, and improving watershed management, but measuring sediment transit time is challenging. Here we provide the first systematic test of measuring cosmogenic meteoric Beryllium-10 (10Bem) in the sediment load of a large alluvial river to quantify sediment transit times. We take advantage of a natural experiment in the Rio Bermejo, a lowland alluvial river traversing the east Andean foreland basin in northern Argentina. This river has no tributaries along its trunk channel for nearly 1,300 km downstream from the mountain front. We sampled suspended sediment depth profiles along the channel and measured the concentrations of 10Bem in the chemically extracted grain coatings. We calculated depth-integrated 10Bem concentrations using sediment flux data and found that 10Bem concentrations increase 230% from upstream to downstream, indicating a mean total sediment transit time of 8.4 ± 2.2 kyr. Bulk sediment budget-based estimates of channel belt and fan storage times suggest that the 10Bem tracer records mixing of old and young sediment reservoirs. On a reach scale, 10Bem transit times are shorter where the channel is braided and superelevated above the floodplain, and longer where the channel is incised and meandering, suggesting that transit time is controlled by channel morphodynamics. This is the first systematic application of 10Bem as a sediment transit time tracer and highlights the method's potential for inferring sediment routing and storage dynamics in large river systems.
publishDate 2020
dc.date.none.fl_str_mv 2020-06
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/11336/174616
Repasch, Marisa; Wittmann, Hella; Scheingross, Joel S.; Sachse, Dirk; Szupiany, Ricardo Nicolas; et al.; Sediment Transit Time and Floodplain Storage Dynamics in Alluvial Rivers Revealed by Meteoric 10Be; Blackwell Publishing; Journal of Geophysical Research: Earth Surface; 125; 7; 6-2020; 1-19
2169-9003
2169-9011
CONICET Digital
CONICET
url http://hdl.handle.net/11336/174616
identifier_str_mv Repasch, Marisa; Wittmann, Hella; Scheingross, Joel S.; Sachse, Dirk; Szupiany, Ricardo Nicolas; et al.; Sediment Transit Time and Floodplain Storage Dynamics in Alluvial Rivers Revealed by Meteoric 10Be; Blackwell Publishing; Journal of Geophysical Research: Earth Surface; 125; 7; 6-2020; 1-19
2169-9003
2169-9011
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1029/2019JF005419
info:eu-repo/semantics/altIdentifier/doi/10.1029/2019JF005419
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Blackwell Publishing
publisher.none.fl_str_mv Blackwell Publishing
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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