Noble gas measurements beneath Filchner-Ronne Ice Sheet
A climatically induced acceleration in ocean‐driven melting of Antarctic ice shelves would have consequences for both the discharge of continental ice into the ocean and thus global sea level, and for the formation of Antarctic Bottom Water and the oceanic meridional overturning circulation. Using a...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.883809 2023-05-15T13:44:47+02:00 Noble gas measurements beneath Filchner-Ronne Ice Sheet Huhn, Oliver Hattermann, Tore Davis, Peter Dunker, Erich Hellmer, Hartmut H Østerhus, Svein Rhein, Monika Schröder, Michael Sültenfuß, Jürgen Nicholls, Keith W MEDIAN LATITUDE: -77.643029 * MEDIAN LONGITUDE: -36.427571 * SOUTH-BOUND LATITUDE: -81.075830 * WEST-BOUND LONGITUDE: -44.188610 * NORTH-BOUND LATITUDE: -73.465000 * EAST-BOUND LONGITUDE: -25.743170 * DATE/TIME START: 2014-01-02T14:51:00 * DATE/TIME END: 2016-12-22T15:19:43 2017-12-06 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.883809 https://doi.org/10.1594/PANGAEA.883809 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.883809 https://doi.org/10.1594/PANGAEA.883809 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Huhn, Oliver; Hattermann, Tore; Davis, Peter E D; Dunker, Erich; Hellmer, Hartmut H; Nicholls, Keith W; Østerhus, Svein; Rhein, Monika; Schröder, Michael; Sültenfuß, Jürgen (2018): Basal Melt and Freezing Rates From First Noble Gas Samples Beneath an Ice Shelf. Geophysical Research Letters, 45(16), 8455-8461, https://doi.org/10.1029/2018GL079706 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Dataset 2017 ftpangaea https://doi.org/10.1594/PANGAEA.883809 https://doi.org/10.1029/2018GL079706 2023-01-20T07:34:04Z A climatically induced acceleration in ocean‐driven melting of Antarctic ice shelves would have consequences for both the discharge of continental ice into the ocean and thus global sea level, and for the formation of Antarctic Bottom Water and the oceanic meridional overturning circulation. Using a novel gas‐tight in situ water sampler, noble gas samples have been collected from six locations beneath the Filchner Ice Shelf, the first such samples from beneath an Antarctic ice shelf. Helium and neon are uniquely suited as tracers of glacial meltwater in the ocean. Basal meltwater fractions range from 3.6% near the ice shelf base to 0.5% near the sea floor, with distinct regional differences. We estimate an average basal melt rate for the Filchner‐Ronne Ice Shelf of 177 ± 95 Gt/year, independently confirming previous results. We calculate that up to 2.7% of the meltwater has been refrozen, and we identify a local source of crustal helium. Dataset Antarc* Antarctic Arctic Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Sheet Ice Shelf Ice Shelves Ronne Ice Shelf Sea ice PANGAEA - Data Publisher for Earth & Environmental Science Arctic Antarctic Ronne Ice Shelf ENVELOPE(-61.000,-61.000,-78.500,-78.500) Filchner Ice Shelf ENVELOPE(-40.000,-40.000,-79.000,-79.000) ENVELOPE(-44.188610,-25.743170,-73.465000,-81.075830) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
spellingShingle |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Huhn, Oliver Hattermann, Tore Davis, Peter Dunker, Erich Hellmer, Hartmut H Østerhus, Svein Rhein, Monika Schröder, Michael Sültenfuß, Jürgen Nicholls, Keith W Noble gas measurements beneath Filchner-Ronne Ice Sheet |
topic_facet |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
description |
A climatically induced acceleration in ocean‐driven melting of Antarctic ice shelves would have consequences for both the discharge of continental ice into the ocean and thus global sea level, and for the formation of Antarctic Bottom Water and the oceanic meridional overturning circulation. Using a novel gas‐tight in situ water sampler, noble gas samples have been collected from six locations beneath the Filchner Ice Shelf, the first such samples from beneath an Antarctic ice shelf. Helium and neon are uniquely suited as tracers of glacial meltwater in the ocean. Basal meltwater fractions range from 3.6% near the ice shelf base to 0.5% near the sea floor, with distinct regional differences. We estimate an average basal melt rate for the Filchner‐Ronne Ice Shelf of 177 ± 95 Gt/year, independently confirming previous results. We calculate that up to 2.7% of the meltwater has been refrozen, and we identify a local source of crustal helium. |
format |
Dataset |
author |
Huhn, Oliver Hattermann, Tore Davis, Peter Dunker, Erich Hellmer, Hartmut H Østerhus, Svein Rhein, Monika Schröder, Michael Sültenfuß, Jürgen Nicholls, Keith W |
author_facet |
Huhn, Oliver Hattermann, Tore Davis, Peter Dunker, Erich Hellmer, Hartmut H Østerhus, Svein Rhein, Monika Schröder, Michael Sültenfuß, Jürgen Nicholls, Keith W |
author_sort |
Huhn, Oliver |
title |
Noble gas measurements beneath Filchner-Ronne Ice Sheet |
title_short |
Noble gas measurements beneath Filchner-Ronne Ice Sheet |
title_full |
Noble gas measurements beneath Filchner-Ronne Ice Sheet |
title_fullStr |
Noble gas measurements beneath Filchner-Ronne Ice Sheet |
title_full_unstemmed |
Noble gas measurements beneath Filchner-Ronne Ice Sheet |
title_sort |
noble gas measurements beneath filchner-ronne ice sheet |
publisher |
PANGAEA |
publishDate |
2017 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.883809 https://doi.org/10.1594/PANGAEA.883809 |
op_coverage |
MEDIAN LATITUDE: -77.643029 * MEDIAN LONGITUDE: -36.427571 * SOUTH-BOUND LATITUDE: -81.075830 * WEST-BOUND LONGITUDE: -44.188610 * NORTH-BOUND LATITUDE: -73.465000 * EAST-BOUND LONGITUDE: -25.743170 * DATE/TIME START: 2014-01-02T14:51:00 * DATE/TIME END: 2016-12-22T15:19:43 |
long_lat |
ENVELOPE(-61.000,-61.000,-78.500,-78.500) ENVELOPE(-40.000,-40.000,-79.000,-79.000) ENVELOPE(-44.188610,-25.743170,-73.465000,-81.075830) |
geographic |
Arctic Antarctic Ronne Ice Shelf Filchner Ice Shelf |
geographic_facet |
Arctic Antarctic Ronne Ice Shelf Filchner Ice Shelf |
genre |
Antarc* Antarctic Arctic Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Sheet Ice Shelf Ice Shelves Ronne Ice Shelf Sea ice |
genre_facet |
Antarc* Antarctic Arctic Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Sheet Ice Shelf Ice Shelves Ronne Ice Shelf Sea ice |
op_source |
Supplement to: Huhn, Oliver; Hattermann, Tore; Davis, Peter E D; Dunker, Erich; Hellmer, Hartmut H; Nicholls, Keith W; Østerhus, Svein; Rhein, Monika; Schröder, Michael; Sültenfuß, Jürgen (2018): Basal Melt and Freezing Rates From First Noble Gas Samples Beneath an Ice Shelf. Geophysical Research Letters, 45(16), 8455-8461, https://doi.org/10.1029/2018GL079706 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.883809 https://doi.org/10.1594/PANGAEA.883809 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.883809 https://doi.org/10.1029/2018GL079706 |
_version_ |
1766206612972765184 |