Grounding line, ice frontal position and coastal ice masks for the Marie Byrd Land Sector of West Antarctica, 2003-2015, supplement to: Christie, Frazer D W; Bingham, Robert G; Gourmelen, Noel; Steig, Eric J; Bisset, Rosie R; Pritchard, Hamish D; Snow, Kate; Tett, Simon F B (2018): Glacier change along West Antarctica's Marie Byrd Land Sector and links to inter-decadal atmosphere-ocean variability. The Cryosphere, 12(7), 2461-2479
Over the past 20 years satellite remote sensing has captured significant downwasting of glaciers that drain the West Antarctic Ice Sheet into the ocean, particularly across the Amundsen Sea Sector. Along the neighbouring Marie Byrd Land Sector, situated west of Thwaites Glacier to Ross Ice Shelf, gl...
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Online Access: | https://dx.doi.org/10.1594/pangaea.884782 https://doi.pangaea.de/10.1594/PANGAEA.884782 |
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ftdatacite:10.1594/pangaea.884782 2023-05-15T13:24:17+02:00 Grounding line, ice frontal position and coastal ice masks for the Marie Byrd Land Sector of West Antarctica, 2003-2015, supplement to: Christie, Frazer D W; Bingham, Robert G; Gourmelen, Noel; Steig, Eric J; Bisset, Rosie R; Pritchard, Hamish D; Snow, Kate; Tett, Simon F B (2018): Glacier change along West Antarctica's Marie Byrd Land Sector and links to inter-decadal atmosphere-ocean variability. The Cryosphere, 12(7), 2461-2479 Christie, Frazer D W Bingham, Robert G Bisset, Rosie R 2018 application/zip https://dx.doi.org/10.1594/pangaea.884782 https://doi.pangaea.de/10.1594/PANGAEA.884782 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.5194/tc-12-2461-2018 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Multiple investigations article Supplementary Collection of Datasets Collection 2018 ftdatacite https://doi.org/10.1594/pangaea.884782 https://doi.org/10.5194/tc-12-2461-2018 2022-02-09T13:37:10Z Over the past 20 years satellite remote sensing has captured significant downwasting of glaciers that drain the West Antarctic Ice Sheet into the ocean, particularly across the Amundsen Sea Sector. Along the neighbouring Marie Byrd Land Sector, situated west of Thwaites Glacier to Ross Ice Shelf, glaciological change has been only sparsely monitored. Here, we use optical satellite imagery to track grounding-line migration along the Marie Byrd Land Sector between 2003 and 2015, and compare observed changes with ICESat and CryoSat-2-derived surface elevation and thickness change records. During the observational period, 33% of the grounding line underwent retreat. The greatest retreat rates were observed along the 650-km-long Getz Ice Shelf, further west of which only minor retreat occurred. The relative glaciological stability west of Getz Ice Shelf can be attributed to a divergence of the Antarctic Circumpolar Current from the continental-shelf break at 135° W, coincident with a transition in the morphology of the continental shelf. Along Getz Ice Shelf, grounding-line retreat reduced by 68% during the CryoSat-2 era relative to earlier observations. This slowdown is a likely response to reduced oceanic forcing, as inferred from climate reanalysis data. Collectively, our findings underscore the importance of spatial and inter-decadal variability in climate and ocean interactions in moderating glaciological change around Antarctica. : Funding information: This work was funded by a Carnegie Trust for the Universities of Scotland Carnegie Ph.D. scholarship to FDWC with RGB, hosted in the Edinburgh E3 U.K. Natural Environmental Research Council Doctoral Training Partnership (NE/L002558/1) and the Scottish Alliance for Geoscience, Environment and Society (SAGES) graduate school. FDWC was also funded through the generous support of a Trans-Antarctic Association Small Grant (TAA17-01) and a SAGES Post-doctoral & Early Career Research Exchange grant. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Antarctica Getz Ice Shelf Ice Sheet Ice Shelf Marie Byrd Land Ross Ice Shelf Thwaites Glacier West Antarctica DataCite Metadata Store (German National Library of Science and Technology) Amundsen Sea Antarctic Bingham ENVELOPE(-63.400,-63.400,-69.400,-69.400) Byrd Getz ENVELOPE(-145.217,-145.217,-76.550,-76.550) Getz Ice Shelf ENVELOPE(-126.500,-126.500,-74.250,-74.250) Marie Byrd Land ENVELOPE(-130.000,-130.000,-78.000,-78.000) Ross Ice Shelf The Antarctic Thwaites Glacier ENVELOPE(-106.750,-106.750,-75.500,-75.500) West Antarctic Ice Sheet West Antarctica |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Multiple investigations |
spellingShingle |
Multiple investigations Christie, Frazer D W Bingham, Robert G Bisset, Rosie R Grounding line, ice frontal position and coastal ice masks for the Marie Byrd Land Sector of West Antarctica, 2003-2015, supplement to: Christie, Frazer D W; Bingham, Robert G; Gourmelen, Noel; Steig, Eric J; Bisset, Rosie R; Pritchard, Hamish D; Snow, Kate; Tett, Simon F B (2018): Glacier change along West Antarctica's Marie Byrd Land Sector and links to inter-decadal atmosphere-ocean variability. The Cryosphere, 12(7), 2461-2479 |
topic_facet |
Multiple investigations |
description |
Over the past 20 years satellite remote sensing has captured significant downwasting of glaciers that drain the West Antarctic Ice Sheet into the ocean, particularly across the Amundsen Sea Sector. Along the neighbouring Marie Byrd Land Sector, situated west of Thwaites Glacier to Ross Ice Shelf, glaciological change has been only sparsely monitored. Here, we use optical satellite imagery to track grounding-line migration along the Marie Byrd Land Sector between 2003 and 2015, and compare observed changes with ICESat and CryoSat-2-derived surface elevation and thickness change records. During the observational period, 33% of the grounding line underwent retreat. The greatest retreat rates were observed along the 650-km-long Getz Ice Shelf, further west of which only minor retreat occurred. The relative glaciological stability west of Getz Ice Shelf can be attributed to a divergence of the Antarctic Circumpolar Current from the continental-shelf break at 135° W, coincident with a transition in the morphology of the continental shelf. Along Getz Ice Shelf, grounding-line retreat reduced by 68% during the CryoSat-2 era relative to earlier observations. This slowdown is a likely response to reduced oceanic forcing, as inferred from climate reanalysis data. Collectively, our findings underscore the importance of spatial and inter-decadal variability in climate and ocean interactions in moderating glaciological change around Antarctica. : Funding information: This work was funded by a Carnegie Trust for the Universities of Scotland Carnegie Ph.D. scholarship to FDWC with RGB, hosted in the Edinburgh E3 U.K. Natural Environmental Research Council Doctoral Training Partnership (NE/L002558/1) and the Scottish Alliance for Geoscience, Environment and Society (SAGES) graduate school. FDWC was also funded through the generous support of a Trans-Antarctic Association Small Grant (TAA17-01) and a SAGES Post-doctoral & Early Career Research Exchange grant. |
format |
Article in Journal/Newspaper |
author |
Christie, Frazer D W Bingham, Robert G Bisset, Rosie R |
author_facet |
Christie, Frazer D W Bingham, Robert G Bisset, Rosie R |
author_sort |
Christie, Frazer D W |
title |
Grounding line, ice frontal position and coastal ice masks for the Marie Byrd Land Sector of West Antarctica, 2003-2015, supplement to: Christie, Frazer D W; Bingham, Robert G; Gourmelen, Noel; Steig, Eric J; Bisset, Rosie R; Pritchard, Hamish D; Snow, Kate; Tett, Simon F B (2018): Glacier change along West Antarctica's Marie Byrd Land Sector and links to inter-decadal atmosphere-ocean variability. The Cryosphere, 12(7), 2461-2479 |
title_short |
Grounding line, ice frontal position and coastal ice masks for the Marie Byrd Land Sector of West Antarctica, 2003-2015, supplement to: Christie, Frazer D W; Bingham, Robert G; Gourmelen, Noel; Steig, Eric J; Bisset, Rosie R; Pritchard, Hamish D; Snow, Kate; Tett, Simon F B (2018): Glacier change along West Antarctica's Marie Byrd Land Sector and links to inter-decadal atmosphere-ocean variability. The Cryosphere, 12(7), 2461-2479 |
title_full |
Grounding line, ice frontal position and coastal ice masks for the Marie Byrd Land Sector of West Antarctica, 2003-2015, supplement to: Christie, Frazer D W; Bingham, Robert G; Gourmelen, Noel; Steig, Eric J; Bisset, Rosie R; Pritchard, Hamish D; Snow, Kate; Tett, Simon F B (2018): Glacier change along West Antarctica's Marie Byrd Land Sector and links to inter-decadal atmosphere-ocean variability. The Cryosphere, 12(7), 2461-2479 |
title_fullStr |
Grounding line, ice frontal position and coastal ice masks for the Marie Byrd Land Sector of West Antarctica, 2003-2015, supplement to: Christie, Frazer D W; Bingham, Robert G; Gourmelen, Noel; Steig, Eric J; Bisset, Rosie R; Pritchard, Hamish D; Snow, Kate; Tett, Simon F B (2018): Glacier change along West Antarctica's Marie Byrd Land Sector and links to inter-decadal atmosphere-ocean variability. The Cryosphere, 12(7), 2461-2479 |
title_full_unstemmed |
Grounding line, ice frontal position and coastal ice masks for the Marie Byrd Land Sector of West Antarctica, 2003-2015, supplement to: Christie, Frazer D W; Bingham, Robert G; Gourmelen, Noel; Steig, Eric J; Bisset, Rosie R; Pritchard, Hamish D; Snow, Kate; Tett, Simon F B (2018): Glacier change along West Antarctica's Marie Byrd Land Sector and links to inter-decadal atmosphere-ocean variability. The Cryosphere, 12(7), 2461-2479 |
title_sort |
grounding line, ice frontal position and coastal ice masks for the marie byrd land sector of west antarctica, 2003-2015, supplement to: christie, frazer d w; bingham, robert g; gourmelen, noel; steig, eric j; bisset, rosie r; pritchard, hamish d; snow, kate; tett, simon f b (2018): glacier change along west antarctica's marie byrd land sector and links to inter-decadal atmosphere-ocean variability. the cryosphere, 12(7), 2461-2479 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2018 |
url |
https://dx.doi.org/10.1594/pangaea.884782 https://doi.pangaea.de/10.1594/PANGAEA.884782 |
long_lat |
ENVELOPE(-63.400,-63.400,-69.400,-69.400) ENVELOPE(-145.217,-145.217,-76.550,-76.550) ENVELOPE(-126.500,-126.500,-74.250,-74.250) ENVELOPE(-130.000,-130.000,-78.000,-78.000) ENVELOPE(-106.750,-106.750,-75.500,-75.500) |
geographic |
Amundsen Sea Antarctic Bingham Byrd Getz Getz Ice Shelf Marie Byrd Land Ross Ice Shelf The Antarctic Thwaites Glacier West Antarctic Ice Sheet West Antarctica |
geographic_facet |
Amundsen Sea Antarctic Bingham Byrd Getz Getz Ice Shelf Marie Byrd Land Ross Ice Shelf The Antarctic Thwaites Glacier West Antarctic Ice Sheet West Antarctica |
genre |
Amundsen Sea Antarc* Antarctic Antarctica Getz Ice Shelf Ice Sheet Ice Shelf Marie Byrd Land Ross Ice Shelf Thwaites Glacier West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctica Getz Ice Shelf Ice Sheet Ice Shelf Marie Byrd Land Ross Ice Shelf Thwaites Glacier West Antarctica |
op_relation |
https://dx.doi.org/10.5194/tc-12-2461-2018 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.884782 https://doi.org/10.5194/tc-12-2461-2018 |
_version_ |
1766378533224972288 |