Anatomy of a glacial meltwater discharge event in an Antarctic cove
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...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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ftconicet:oai:ri.conicet.gov.ar:11336/140406 2023-10-09T21:46:03+02:00 Anatomy of a glacial meltwater discharge event in an Antarctic cove Meredith, Michael Ulrike Falk Bers, Anna Valeria Mackensen, Andreas Schloss, Irene Ruth Ruiz Barlett, Eduardo Mariano Jerosch, Kerstin Silva Busso, Adrián Abele, Doris application/pdf http://hdl.handle.net/11336/140406 eng eng The Royal Society 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 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 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ ANTARCTICA GEOCHEMICAL TRACERS GLACIAL DISCHARGE STABLE ISOTOPES https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1098/rsta.2017.0163 2023-09-24T18:49:54Z 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 ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica British Antarctic Survey Tierra del Fuego CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic Antarctic Peninsula Austral Potter Cove Argentina Andreas ENVELOPE(-60.729,-60.729,-64.008,-64.008) Meredith ENVELOPE(67.717,67.717,-71.200,-71.200) Fourcade ENVELOPE(-62.490,-62.490,-64.612,-64.612) Fourcade Glacier ENVELOPE(-58.666,-58.666,-62.216,-62.216) Antarctic Cove ENVELOPE(70.138,70.138,-49.700,-49.700) Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 376 2122 20170163 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
ANTARCTICA GEOCHEMICAL TRACERS GLACIAL DISCHARGE STABLE ISOTOPES https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
spellingShingle |
ANTARCTICA GEOCHEMICAL TRACERS GLACIAL DISCHARGE STABLE ISOTOPES https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 Meredith, Michael Ulrike Falk Bers, Anna Valeria Mackensen, Andreas Schloss, Irene Ruth Ruiz Barlett, Eduardo Mariano Jerosch, Kerstin Silva Busso, Adrián Abele, Doris Anatomy of a glacial meltwater discharge event in an Antarctic cove |
topic_facet |
ANTARCTICA GEOCHEMICAL TRACERS GLACIAL DISCHARGE STABLE ISOTOPES https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
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'. 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 ... |
format |
Article in Journal/Newspaper |
author |
Meredith, Michael Ulrike Falk Bers, Anna Valeria Mackensen, Andreas Schloss, Irene Ruth Ruiz Barlett, Eduardo Mariano Jerosch, Kerstin Silva Busso, Adrián Abele, Doris |
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_sort |
Meredith, Michael |
title |
Anatomy of a glacial meltwater discharge event in an Antarctic cove |
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 |
publisher |
The Royal Society |
url |
http://hdl.handle.net/11336/140406 |
long_lat |
ENVELOPE(-60.729,-60.729,-64.008,-64.008) ENVELOPE(67.717,67.717,-71.200,-71.200) ENVELOPE(-62.490,-62.490,-64.612,-64.612) ENVELOPE(-58.666,-58.666,-62.216,-62.216) ENVELOPE(70.138,70.138,-49.700,-49.700) |
geographic |
Antarctic Antarctic Peninsula Austral Potter Cove Argentina Andreas Meredith Fourcade Fourcade Glacier Antarctic Cove |
geographic_facet |
Antarctic Antarctic Peninsula Austral Potter Cove Argentina Andreas Meredith Fourcade Fourcade Glacier Antarctic Cove |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica British Antarctic Survey Tierra del Fuego |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica British Antarctic Survey Tierra del Fuego |
op_relation |
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 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 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1098/rsta.2017.0163 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
376 |
container_issue |
2122 |
container_start_page |
20170163 |
_version_ |
1779321713847173120 |