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Part 1: Document Description
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Citation |
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Title: |
Supporting Data for: Half a century of dynamic instability following the ocean-driven break-up of Wordie Ice Shelf |
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Identification Number: |
doi:10.60612/dataDK/AEOFGC |
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Distributor: |
DeiC Dataverse |
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Date of Distribution: |
2025-04-23 |
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Version: |
1 |
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Bibliographic Citation: |
Dømgaard, Mads; Millan, Romain; Andersen, Jonas; Scheuchl, Bernd; Rignot, Eric; Izeboud, Maaike; Bernat, Maud; Bjørk, Anders, 2025, "Supporting Data for: Half a century of dynamic instability following the ocean-driven break-up of Wordie Ice Shelf", https://doi.org/10.60612/DATADK/AEOFGC, DeiC Dataverse, V1 |
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Citation |
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Title: |
Supporting Data for: Half a century of dynamic instability following the ocean-driven break-up of Wordie Ice Shelf |
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Identification Number: |
doi:10.60612/dataDK/AEOFGC |
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Authoring Entity: |
Dømgaard, Mads (University of Copenhagen) |
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Millan, Romain (Univ. Grenoble Alpes, IRD, CNRS) |
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Andersen, Jonas (University of Copenhagen) |
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Scheuchl, Bernd (Department of Earth System Science, University of California, Irvine,) |
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Rignot, Eric (Department of Earth System Science, University of California, Irvine,) |
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Izeboud, Maaike (Department of Geoscience and Remote Sensing, Delft University of Technology) |
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Bernat, Maud (Université de Toulouse, LEGOS) |
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Bjørk, Anders (University of Copenhagen) |
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Grant Number: |
Villum Young Investigator grant no. 29456 |
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Distributor: |
DeiC Dataverse |
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Access Authority: |
Bjørk, Anders Anker |
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Depositor: |
Bjørk, Anders Anker |
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Date of Deposit: |
2025-03-27 |
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Holdings Information: |
https://doi.org/10.60612/DATADK/AEOFGC |
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Study Scope |
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Keywords: |
Earth and Environmental Sciences, Ice shelf collapse, Antarctic Ice Sheet, Historical glaciology, Photogrammetry |
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Topic Classification: |
Glaciology |
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Abstract: |
Supporting Data for: Half a century of dynamic instability following the ocean-driven break-up of Wordie Ice Shelf Ice shelves restrain grounded ice discharge into the ocean, and their break-up contributes significantly to Antarctica’s sea level rise. Using aerial imagery from the 1960s and modern satellite data, we construct a long-term record of Wordie Ice Shelf’s disintegration and its effects on tributary glaciers. Early changes in pinning points and ocean warming in Marguerite Bay since the 1960s strongly suggest increasing basal melt as the primary driver of the ice shelf disintegration. Some glaciers responded immediately to the ice shelf break-up, with surface velocities tripling, thinning up to 160 m, and grounding line retreat of 7.5 km, while others reacted decades later due to buttressing from remnant parts of the ice shelf. Our findings emphasize the importance of long-term observations to understand ice shelf disintegration and its impacts, offering crucial insights for assessments of future ice loss from the Antarctic Ice Sheet. <br> Available for download is all data created for this study:<ul> <li>DEMs</li> <li>Orthophotos</li> <li>Ice flow velocities</li> <li>Ice shelf margins</li> <li>Grounding lines</li></ul> Associated with each dataset/data folder is a readme.txt file with detailed information. |
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Time Period: |
1945-01-01-2024-01-01 |
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Geographic Unit(s): |
Antarctica, Wordie Ice Shelf |
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Methodology and Processing |
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Sources Statement |
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Data Access |
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Other Study Description Materials |
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Related Publications |
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Citation |
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Title: |
Dømgaard, M., Millan, R., Andersen, J.K. et al. Half a century of dynamic instability following the ocean-driven break-up of Wordie Ice Shelf. Nat Commun 16, 4016 (2025). |
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Identification Number: |
10.1038/s41467-025-59293-1 |
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Bibliographic Citation: |
Dømgaard, M., Millan, R., Andersen, J.K. et al. Half a century of dynamic instability following the ocean-driven break-up of Wordie Ice Shelf. Nat Commun 16, 4016 (2025). |
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Label: |
Readme.txt |
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Notes: |
text/plain |
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Label: |
Wordie28Nov1966_DEM1966_100m_RelativeDEM_Georef.tif |
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Notes: |
image/tiff |
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Wordie28Nov1966_DEM1966_100m_RelativeDEM_Georef.tif.aux.xml |
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Notes: |
text/xml |
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Label: |
Wordie28Nov1966_DEM1966_100m_RelativeDEM_Georef.tif.ovr |
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Notes: |
image/tiff |
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Label: |
Wordie28Nov1966_DEM1966_50m_Coreg.tif |
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Notes: |
image/tiff |
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Label: |
Wordie28Nov1966_DEM1966_50m_Coreg.tif.aux.xml |
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Notes: |
text/xml |
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Label: |
GL1966.zip |
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Notes: |
application/zipped-shapefile |
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Label: |
GL2023.zip |
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Notes: |
application/zipped-shapefile |
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Label: |
Readme.txt |
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Notes: |
text/plain |
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Label: |
CarlsonFront.zip |
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Notes: |
application/zipped-shapefile |
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Label: |
FIP1-2ProspectFront.zip |
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Notes: |
application/zipped-shapefile |
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Label: |
FlemingFront.zip |
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Notes: |
application/zipped-shapefile |
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Label: |
HariotFront.zip |
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Notes: |
application/zipped-shapefile |
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IceShelfFront.zip |
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Notes: |
application/zipped-shapefile |
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PinningPoints.zip |
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Notes: |
application/zipped-shapefile |
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Label: |
Readme.txt |
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Notes: |
text/plain |
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UnnamedFront.zip |
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Notes: |
application/zipped-shapefile |
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Label: |
Readme.txt |
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Notes: |
text/plain |
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Label: |
Wordie12Jan1969_Orthomosaic5m_Georef.tfw |
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Notes: |
application/octet-stream |
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Label: |
Wordie12Jan1969_Orthomosaic5m_Georef.tif |
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Notes: |
image/tiff |
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Label: |
Wordie12Jan1969_Orthomosaic5m_Georef.tif.aux.xml |
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Notes: |
text/xml |
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Label: |
Wordie12Jan1969_Orthomosaic5m_Georef.tif.ovr |
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image/tiff |
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Label: |
Wordie27Dec1966_CA1845_Orthomosaic5m_Georef.tfw |
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Notes: |
application/octet-stream |
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Label: |
Wordie27Dec1966_CA1845_Orthomosaic5m_Georef.tif |
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Notes: |
image/tiff |
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Label: |
Wordie27Dec1966_CA1845_Orthomosaic5m_Georef.tif.aux.xml |
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Notes: |
text/xml |
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Label: |
Wordie27Dec1966_CA1845_Orthomosaic5m_Georef.tif.ovr |
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Notes: |
image/tiff |
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Label: |
Wordie28Nov1966_Orthomosaic5m_Georef.tfw |
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Notes: |
application/octet-stream |
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Label: |
Wordie28Nov1966_Orthomosaic5m_Georef.tif |
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image/tiff |
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Label: |
Wordie28Nov1966_Orthomosaic5m_Georef.tif.aux.xml |
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Notes: |
text/xml |
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Label: |
Wordie28Nov1966_Orthomosaic5m_Georef.tif.ovr |
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Notes: |
image/tiff |
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Label: |
CarlsonGl_Velocity.csv |
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Notes: |
text/csv |
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Label: |
FIP1Gl_Velocity.csv |
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Notes: |
text/csv |
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Label: |
FIP2Gl_Velocity.csv |
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Notes: |
text/csv |
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Label: |
FlemingGl_Velocity.csv |
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Notes: |
text/csv |
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Label: |
HariotGl_Velocity.csv |
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Notes: |
text/csv |
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Label: |
ProspectGl_Velocity.csv |
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Notes: |
text/csv |
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Label: |
readme.txt |
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Notes: |
text/plain |
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Label: |
UnnamedGl_Velocity.csv |
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Notes: |
text/csv |