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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/140406
Ver los metadatos del registro completo
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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 Técnicas2025-09-29T09:46:25Zoai: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:34982025-09-29 09:46:26.261CONICET 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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1844613450204971008 |
score |
13.070432 |