Anatomy of a glacial meltwater discharge event in an Antarctic cove

Autores
Meredith, Michael; Ulrike Falk; Bers, Anna Valeria; Mackensen, Andreas; Schloss, Irene Ruth; Ruiz Barlett, Eduardo Mariano; Jerosch, Kerstin; Silva Busso, Adrián; Abele, Doris
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Glacial meltwater discharge from Antarctica is a key influence on the marine environment, impacting ocean circulation, sea level and productivity of the pelagic and benthic ecosystems. The responses elicited depend strongly on the characteristics of the meltwater releases, including timing, spatial structure and geochemical composition. Here we use isotopic tracers to reveal the time-varying pattern of meltwater during a discharge event from the Fourcade Glacier into Potter Cove, northern Antarctic Peninsula. The discharge is strongly dependent on local air temperature, and accumulates into an extremely thin, buoyant layer at the surface. This layer showed evidence of elevated turbidity, and responded rapidly to changes in atmospherically driven circulation to generate a strongly pulsed outflow from the cove to the broader ocean. These characteristics contrast with those further south along the Peninsula, where strong glacial frontal ablation is driven oceanographically by intrusions of warm deep waters from offshore. The Fourcade Glacier switched very recently to being land-terminating; if retreat rates elsewhere along the Peninsula remain high and glacier termini progress strongly landward, the structure and impact of the freshwater discharges are likely to increasingly resemble the patterns elucidated here. This article is part of the theme issue 'The marine system of the West Antarctic Peninsula: status and strategy for progress in a region of rapid change'.
Fil: Meredith, Michael. British Antarctic Survey; Reino Unido
Fil: Ulrike Falk. Universitat Bremen; Alemania. Helmholtz Centre for Polar and Marine Research; Alemania
Fil: Bers, Anna Valeria. Helmholtz Centre for Polar and Marine Research; Alemania
Fil: Mackensen, Andreas. Helmholtz Centre for Polar and Marine Research; Alemania
Fil: Schloss, Irene Ruth. Universidad Nacional de Tierra del Fuego; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Ruiz Barlett, Eduardo Mariano. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Jerosch, Kerstin. Helmholtz Centre for Polar and Marine Research; Alemania
Fil: Silva Busso, Adrián. Universidad de Buenos Aires; Argentina
Fil: Abele, Doris. Helmholtz Centre for Polar and Marine Research; Alemania
Materia
ANTARCTICA
GEOCHEMICAL TRACERS
GLACIAL DISCHARGE
STABLE ISOTOPES
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:11336/140406
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/140406
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Anatomy of a glacial meltwater discharge event in an Antarctic coveMeredith, MichaelUlrike FalkBers, Anna ValeriaMackensen, AndreasSchloss, Irene RuthRuiz Barlett, Eduardo MarianoJerosch, KerstinSilva Busso, AdriánAbele, DorisANTARCTICAGEOCHEMICAL TRACERSGLACIAL DISCHARGESTABLE ISOTOPEShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Glacial meltwater discharge from Antarctica is a key influence on the marine environment, impacting ocean circulation, sea level and productivity of the pelagic and benthic ecosystems. The responses elicited depend strongly on the characteristics of the meltwater releases, including timing, spatial structure and geochemical composition. Here we use isotopic tracers to reveal the time-varying pattern of meltwater during a discharge event from the Fourcade Glacier into Potter Cove, northern Antarctic Peninsula. The discharge is strongly dependent on local air temperature, and accumulates into an extremely thin, buoyant layer at the surface. This layer showed evidence of elevated turbidity, and responded rapidly to changes in atmospherically driven circulation to generate a strongly pulsed outflow from the cove to the broader ocean. These characteristics contrast with those further south along the Peninsula, where strong glacial frontal ablation is driven oceanographically by intrusions of warm deep waters from offshore. The Fourcade Glacier switched very recently to being land-terminating; if retreat rates elsewhere along the Peninsula remain high and glacier termini progress strongly landward, the structure and impact of the freshwater discharges are likely to increasingly resemble the patterns elucidated here. This article is part of the theme issue 'The marine system of the West Antarctic Peninsula: status and strategy for progress in a region of rapid change'.Fil: Meredith, Michael. British Antarctic Survey; Reino UnidoFil: Ulrike Falk. Universitat Bremen; Alemania. Helmholtz Centre for Polar and Marine Research; AlemaniaFil: Bers, Anna Valeria. Helmholtz Centre for Polar and Marine Research; AlemaniaFil: Mackensen, Andreas. Helmholtz Centre for Polar and Marine Research; AlemaniaFil: Schloss, Irene Ruth. Universidad Nacional de Tierra del Fuego; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaFil: Ruiz Barlett, Eduardo Mariano. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaFil: Jerosch, Kerstin. Helmholtz Centre for Polar and Marine Research; AlemaniaFil: Silva Busso, Adrián. Universidad de Buenos Aires; ArgentinaFil: Abele, Doris. Helmholtz Centre for Polar and Marine Research; AlemaniaThe Royal Society2018-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/140406Meredith, Michael; Ulrike Falk; Bers, Anna Valeria; Mackensen, Andreas; Schloss, Irene Ruth; et al.; Anatomy of a glacial meltwater discharge event in an Antarctic cove; The Royal Society; Philosophical Transactions of the Royal Society A - Mathematical Physical and Engineering Sciences; 376; 2122; 5-2018; 1-171364-503XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://royalsocietypublishing.org/doi/10.1098/rsta.2017.0163info:eu-repo/semantics/altIdentifier/doi/10.1098/rsta.2017.0163info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:40:04Zoai:ri.conicet.gov.ar:11336/140406instacron: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:34982025-10-15 14:40:04.408CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Anatomy of a glacial meltwater discharge event in an Antarctic cove
title Anatomy of a glacial meltwater discharge event in an Antarctic cove
spellingShingle Anatomy of a glacial meltwater discharge event in an Antarctic cove
Meredith, Michael
ANTARCTICA
GEOCHEMICAL TRACERS
GLACIAL DISCHARGE
STABLE ISOTOPES
title_short Anatomy of a glacial meltwater discharge event in an Antarctic cove
title_full Anatomy of a glacial meltwater discharge event in an Antarctic cove
title_fullStr Anatomy of a glacial meltwater discharge event in an Antarctic cove
title_full_unstemmed Anatomy of a glacial meltwater discharge event in an Antarctic cove
title_sort Anatomy of a glacial meltwater discharge event in an Antarctic cove
dc.creator.none.fl_str_mv Meredith, Michael
Ulrike Falk
Bers, Anna Valeria
Mackensen, Andreas
Schloss, Irene Ruth
Ruiz Barlett, Eduardo Mariano
Jerosch, Kerstin
Silva Busso, Adrián
Abele, Doris
author Meredith, Michael
author_facet Meredith, Michael
Ulrike Falk
Bers, Anna Valeria
Mackensen, Andreas
Schloss, Irene Ruth
Ruiz Barlett, Eduardo Mariano
Jerosch, Kerstin
Silva Busso, Adrián
Abele, Doris
author_role author
author2 Ulrike Falk
Bers, Anna Valeria
Mackensen, Andreas
Schloss, Irene Ruth
Ruiz Barlett, Eduardo Mariano
Jerosch, Kerstin
Silva Busso, Adrián
Abele, Doris
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv ANTARCTICA
GEOCHEMICAL TRACERS
GLACIAL DISCHARGE
STABLE ISOTOPES
topic ANTARCTICA
GEOCHEMICAL TRACERS
GLACIAL DISCHARGE
STABLE ISOTOPES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Glacial meltwater discharge from Antarctica is a key influence on the marine environment, impacting ocean circulation, sea level and productivity of the pelagic and benthic ecosystems. The responses elicited depend strongly on the characteristics of the meltwater releases, including timing, spatial structure and geochemical composition. Here we use isotopic tracers to reveal the time-varying pattern of meltwater during a discharge event from the Fourcade Glacier into Potter Cove, northern Antarctic Peninsula. The discharge is strongly dependent on local air temperature, and accumulates into an extremely thin, buoyant layer at the surface. This layer showed evidence of elevated turbidity, and responded rapidly to changes in atmospherically driven circulation to generate a strongly pulsed outflow from the cove to the broader ocean. These characteristics contrast with those further south along the Peninsula, where strong glacial frontal ablation is driven oceanographically by intrusions of warm deep waters from offshore. The Fourcade Glacier switched very recently to being land-terminating; if retreat rates elsewhere along the Peninsula remain high and glacier termini progress strongly landward, the structure and impact of the freshwater discharges are likely to increasingly resemble the patterns elucidated here. This article is part of the theme issue 'The marine system of the West Antarctic Peninsula: status and strategy for progress in a region of rapid change'.
Fil: Meredith, Michael. British Antarctic Survey; Reino Unido
Fil: Ulrike Falk. Universitat Bremen; Alemania. Helmholtz Centre for Polar and Marine Research; Alemania
Fil: Bers, Anna Valeria. Helmholtz Centre for Polar and Marine Research; Alemania
Fil: Mackensen, Andreas. Helmholtz Centre for Polar and Marine Research; Alemania
Fil: Schloss, Irene Ruth. Universidad Nacional de Tierra del Fuego; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Ruiz Barlett, Eduardo Mariano. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Jerosch, Kerstin. Helmholtz Centre for Polar and Marine Research; Alemania
Fil: Silva Busso, Adrián. Universidad de Buenos Aires; Argentina
Fil: Abele, Doris. Helmholtz Centre for Polar and Marine Research; Alemania
description Glacial meltwater discharge from Antarctica is a key influence on the marine environment, impacting ocean circulation, sea level and productivity of the pelagic and benthic ecosystems. The responses elicited depend strongly on the characteristics of the meltwater releases, including timing, spatial structure and geochemical composition. Here we use isotopic tracers to reveal the time-varying pattern of meltwater during a discharge event from the Fourcade Glacier into Potter Cove, northern Antarctic Peninsula. The discharge is strongly dependent on local air temperature, and accumulates into an extremely thin, buoyant layer at the surface. This layer showed evidence of elevated turbidity, and responded rapidly to changes in atmospherically driven circulation to generate a strongly pulsed outflow from the cove to the broader ocean. These characteristics contrast with those further south along the Peninsula, where strong glacial frontal ablation is driven oceanographically by intrusions of warm deep waters from offshore. The Fourcade Glacier switched very recently to being land-terminating; if retreat rates elsewhere along the Peninsula remain high and glacier termini progress strongly landward, the structure and impact of the freshwater discharges are likely to increasingly resemble the patterns elucidated here. This article is part of the theme issue 'The marine system of the West Antarctic Peninsula: status and strategy for progress in a region of rapid change'.
publishDate 2018
dc.date.none.fl_str_mv 2018-05
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/11336/140406
Meredith, Michael; Ulrike Falk; Bers, Anna Valeria; Mackensen, Andreas; Schloss, Irene Ruth; et al.; Anatomy of a glacial meltwater discharge event in an Antarctic cove; The Royal Society; Philosophical Transactions of the Royal Society A - Mathematical Physical and Engineering Sciences; 376; 2122; 5-2018; 1-17
1364-503X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/140406
identifier_str_mv Meredith, Michael; Ulrike Falk; Bers, Anna Valeria; Mackensen, Andreas; Schloss, Irene Ruth; et al.; Anatomy of a glacial meltwater discharge event in an Antarctic cove; The Royal Society; Philosophical Transactions of the Royal Society A - Mathematical Physical and Engineering Sciences; 376; 2122; 5-2018; 1-17
1364-503X
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://royalsocietypublishing.org/doi/10.1098/rsta.2017.0163
info:eu-repo/semantics/altIdentifier/doi/10.1098/rsta.2017.0163
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
application/pdf
dc.publisher.none.fl_str_mv The Royal Society
publisher.none.fl_str_mv The Royal Society
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 13.22299

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