Abstract:
The dataset contains terminus positions and flowlines of the Vincennes Bay Outlet Glaciers, for the years 1963-2022. These are provided as shapefiles, associated with a paper submitted to The Cryosphere entitled Extensive and anomalous grounding line retreat at Vanderford Glacier, Vincennes Bay, Wilkes Land, East Antarctica (Picton et al., 2023). The dataset is divided into three separate folders: (i) flowlines, (ii) sampling boxes, and (iii) terminus positions. The flowlines and sampling boxes, shown in Figure 1B (Picton et al., 2023), were used to facilitate data collection. The terminus positions represent annual terminus positions manually digitised from satellite imagery. Flowlines, sampling boxes and terminus positions are provided for each of the Vincennes Bay outlet glaciers:
Vanderford, Adams, Anzac, Bond East, Bond West, and Underwood.
Chris Stokes and Stewart Jamieson acknowledge funding from the UK Natural Environment Research Council grant NE/R000824/1.
Keywords:
Antarctica, Ice Dynamics, Outlet Glacier, Terminus Position, Wilkes Land
Picton, H., Stokes, C., & Jamieson, S. (2023). Terminus Positions and Flowlines of Vincennes Bay Outlet Glaciers, East Antarctica, 1963-2022 (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/4d4bd383-f6bb-4476-9058-d883b7706b26
| Access Constraints: | No restrictions apply. |
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| Use Constraints: | Data supplied under Open Government Licence v3.0 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. |
| Creation Date: | 2023-06-12 |
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| Dataset Progress: | Complete |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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| Personnel: | |
| Name | UK Polar Data Centre |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Name | Hannah J Picton |
| Role(s) | Technical Contact, Investigator |
| Organisation | University of Edinburgh |
| Name | Chris R Stokes |
| Role(s) | Investigator |
| Organisation | Durham University |
| Name | Stewart S R Jamieson |
| Role(s) | Investigator |
| Organisation | Durham University |
| Parent Dataset: | N/A |
| Reference: | Picton, H. J., Stokes, C. R., Jamieson, S. S. R., Floricioiu, D., and Krieger, L.: Extensive and anomalous grounding line retreat at Vanderford Glacier, Vincennes Bay, Wilkes Land, East Antarctica, The Cryosphere, 17, 3593-3616, https://doi.org/10.5194/tc-17-3593-2023, 2023. Ribeiro, N., Herraiz-Borreguero, L., Rintoul, S. R., McMahon, C. R., Hindell, M., Harcourt, R., and Williams, G.: Warm Modified Circumpolar Deep Water Intrusions Drive Ice Shelf Melt and Inhibit Dense Shelf Water Formation in Vincennes Bay, East Antarctica, Journal of Geophysical Research: Oceans, 126, 1-17, e2020JC016998, https://doi.org/10.1029/2020JC016998, 2021. Kim, K., Jezek, K. C., and Liu, H.: Orthorectified image mosaic of Antarctica from 1963 Argon satellite photography: image processing and glaciological applications, International Journal of Remote Sensing, 28, 5357-5373, https://doi.org/10.1080/01431160601105850, 2007. |
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| Quality: | The manually digitised terminus positions are estimated to have an associated error between 15 and 210 m. For the calculation of these errors, please consult Picton et al. (2022). | |
| Lineage: | All shapefiles were manually digitised within QGIS. Terminus positions were manually digitised from KH-5 ARGON (Kim et al., 2007), Landsat-1, Landsat-4, Landsat-5, Landsat-7, Landsat-8, Sentinel 2A and Sentinel-2B imagery (1963-2022). Picton et al. (2022) provide details of each satellite scene ID used within the supplementary material. Picton et al. (2022) uses grounding-line positions from Vincennes Bay derived using differential synthetic aperture radar interferometry (DInSAR). This dataset can be found at the ENVEO cryoportal (cryoportal.enveo.at), entitled GLL, Vincennes Bay, Antarctica, 1996 - 2020. Vincennes Bay is defined as the shelf region situated on the Wilkes Land coast between 104° E and 111° E (Ribeiro et al., 2021). Vincennes Bay overlies the Aurora Subglacial Basin and is drained by several marine-terminating outlet glaciers: Vanderford, Adams, Anzac, Bond, and Underwood. |
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| Temporal Coverage: | |
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| Start Date | 1963-10-01 |
| End Date | 2022-02-10 |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | -67.5 |
| Northernmost | -66.5 |
| Longitude | |
| Westernmost | 107.5 |
| Easternmost | 111 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | N/A |
| Max Depth | N/A |
| Location: | |
| Location | Antarctica |
| Detailed Location | Vincennes Bay |
| Data Collection: | QGIS (Version 3.22.6-Bialowieza). |
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| Distribution: | |
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| Distribution Media | Online Internet (HTTP) |
| Distribution Size | 1.1 MB |
| Distribution Format | SHP |
| Fees | N/A |
| Data Storage: | The dataset includes a README text file and shapefiles held in three separate folders: (i) flowlines, (ii) sampling boxes, and (iii) terminus positions. (i) Flowlines - 7 Shapefiles This folder contains the central flowlines manually digitised along each glacier trunk. Individual shapefiles are provided for each of the Vanderford, Adams, Anzac, Bond East, Bond West, and Underwood Glaciers. An additional shapefile is also provided, 'VINCENNES BAY FLOWLINES', which represents a merged vector layer containing all of the individual glacier flowlines. (ii) Sampling Boxes - 6 Shapefiles This folder contains the boxes used to sample ice surface velocity and ice surface elevation (Picton et al., 2022). A shapefile is provided for each of the Vanderford, Adams, Anzac, Bond East, Bond West, and Underwood Glaciers. Each shapefile contains three sampling boxes, the first positioned on the floating tongue (FT), the second located immediately up-glacier of the most landward observed grounding line position (GL), and the third placed a further 5 km upstream (IN). (iii) Terminus Positions - 6 Shapefiles This folder contains annual terminus positions manually digitised across each of the Vanderford, Adams, Anzac, Bond East, Bond West, and Underwood Glaciers (1963-2022). A shapefile is provided for each glacier, with a 'DATE' field showing the date of the satellite image from which the terminus position was digitised. |