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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Online Access: | https://epic.awi.de/id/eprint/46592/ https://epic.awi.de/id/eprint/46592/1/RSTA20170163p.pdf http://rsta.royalsocietypublishing.org/content/376/2122/20170163 https://hdl.handle.net/10013/epic.1127c8b9-301f-4e41-9860-422f99759bc4 https://hdl.handle.net/ |
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ftawi:oai:epic.awi.de:46592 2023-05-15T13:45:21+02:00 Anatomy of a glacial meltwater discharge event in an Antarctic Cove Meredith, Michael P. Falk, Ulrike Bers, A. Valeria Mackensen, Andreas Schloss, Irene Ruiz Barlett, Eduardo M. Jerosch, Kerstin Busso, Adrian S. Abele, Doris 2018-05-14 application/pdf https://epic.awi.de/id/eprint/46592/ https://epic.awi.de/id/eprint/46592/1/RSTA20170163p.pdf http://rsta.royalsocietypublishing.org/content/376/2122/20170163 https://hdl.handle.net/10013/epic.1127c8b9-301f-4e41-9860-422f99759bc4 https://hdl.handle.net/ unknown ROYAL SOC https://epic.awi.de/id/eprint/46592/1/RSTA20170163p.pdf https://hdl.handle.net/ Meredith, M. P. , Falk, U. , Bers, A. V. , Mackensen, A. orcid:0000-0002-5024-4455 , Schloss, I. , Ruiz Barlett, E. M. , Jerosch, K. orcid:0000-0003-0728-2154 , Busso, A. S. and Abele, D. orcid:0000-0002-5766-5017 (2018) Anatomy of a glacial meltwater discharge event in an Antarctic Cove , Philosophical Transactions of the Royal Society A-Mathematical Physical and Engin, 376 . doi:10.1098/rsta.2017.0163 <https://doi.org/10.1098/rsta.2017.0163> , hdl:10013/epic.1127c8b9-301f-4e41-9860-422f99759bc4 info:eu-repo/semantics/embargoedAccess EPIC3Philosophical Transactions of the Royal Society A-Mathematical Physical and Engin, ROYAL SOC, 376, ISSN: 1364-503X Article isiRev info:eu-repo/semantics/article 2018 ftawi https://doi.org/10.1098/rsta.2017.0163 2021-12-24T15:43:38Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Antarctic Cove ENVELOPE(70.138,70.138,-49.700,-49.700) Antarctic Peninsula Fourcade ENVELOPE(-62.490,-62.490,-64.612,-64.612) Fourcade Glacier ENVELOPE(-58.666,-58.666,-62.216,-62.216) Potter Cove Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 376 2122 20170163 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
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. |
format |
Article in Journal/Newspaper |
author |
Meredith, Michael P. Falk, Ulrike Bers, A. Valeria Mackensen, Andreas Schloss, Irene Ruiz Barlett, Eduardo M. Jerosch, Kerstin Busso, Adrian S. Abele, Doris |
spellingShingle |
Meredith, Michael P. Falk, Ulrike Bers, A. Valeria Mackensen, Andreas Schloss, Irene Ruiz Barlett, Eduardo M. Jerosch, Kerstin Busso, Adrian S. Abele, Doris Anatomy of a glacial meltwater discharge event in an Antarctic Cove |
author_facet |
Meredith, Michael P. Falk, Ulrike Bers, A. Valeria Mackensen, Andreas Schloss, Irene Ruiz Barlett, Eduardo M. Jerosch, Kerstin Busso, Adrian S. Abele, Doris |
author_sort |
Meredith, Michael P. |
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 |
ROYAL SOC |
publishDate |
2018 |
url |
https://epic.awi.de/id/eprint/46592/ https://epic.awi.de/id/eprint/46592/1/RSTA20170163p.pdf http://rsta.royalsocietypublishing.org/content/376/2122/20170163 https://hdl.handle.net/10013/epic.1127c8b9-301f-4e41-9860-422f99759bc4 https://hdl.handle.net/ |
long_lat |
ENVELOPE(70.138,70.138,-49.700,-49.700) ENVELOPE(-62.490,-62.490,-64.612,-64.612) ENVELOPE(-58.666,-58.666,-62.216,-62.216) |
geographic |
Antarctic Antarctic Cove Antarctic Peninsula Fourcade Fourcade Glacier Potter Cove |
geographic_facet |
Antarctic Antarctic Cove Antarctic Peninsula Fourcade Fourcade Glacier Potter Cove |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica |
op_source |
EPIC3Philosophical Transactions of the Royal Society A-Mathematical Physical and Engin, ROYAL SOC, 376, ISSN: 1364-503X |
op_relation |
https://epic.awi.de/id/eprint/46592/1/RSTA20170163p.pdf https://hdl.handle.net/ Meredith, M. P. , Falk, U. , Bers, A. V. , Mackensen, A. orcid:0000-0002-5024-4455 , Schloss, I. , Ruiz Barlett, E. M. , Jerosch, K. orcid:0000-0003-0728-2154 , Busso, A. S. and Abele, D. orcid:0000-0002-5766-5017 (2018) Anatomy of a glacial meltwater discharge event in an Antarctic Cove , Philosophical Transactions of the Royal Society A-Mathematical Physical and Engin, 376 . doi:10.1098/rsta.2017.0163 <https://doi.org/10.1098/rsta.2017.0163> , hdl:10013/epic.1127c8b9-301f-4e41-9860-422f99759bc4 |
op_rights |
info:eu-repo/semantics/embargoedAccess |
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 |
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1766221153583497216 |