USAP-DC

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{"@context": "https://schema.org/", "@type": "Dataset", "@id": "doi:10.15784/601904", "additionalType": ["geolink:Dataset", "vivo:Dataset"], "name": "Yearly velocity and strain-rate averages from the Thwaites Eastern Ice Shelf, 2013-2022", "description": "This dataset comprises GeoTiff files that capture the yearly averages of ice-flow velocity (including x- and y-components, and flow speed) and strain rates (longitudinal, transverse, and shear) for the Thwaites Eastern Ice Shelf (TEIS) from 2013 to 2022. The velocity grids were generated using ITS_LIVE image-pair velocities available throughout the year, ensuring a consistent extent and spatial resolution for each annual composite. These composites were created by stacking all available image pairs and taking the median value for each grid cell. Small data gaps near the grounding line were filled using bilinear interpolation. Each pixel in the grid represents the median value of all available pixels during the specified period. 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Yearly velocity and strain-rate averages from the Thwaites Eastern Ice Shelf, 2013-2022 Data DOI: https://doi.org/10.15784/601904 Cite as Banerjee, D., Alley, K., Lilien, D., Luckman, A., Muto, A., Pettit, E. C., et al. (2025) "Yearly velocity and strain-rate averages from the Thwaites Eastern Ice Shelf, 2013-2022" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601904. Abstract This dataset comprises GeoTiff files that capture the yearly averages of ice-flow velocity (including x- and y-components, and flow speed) and strain rates (longitudinal, transverse, and shear) for the Thwaites Eastern Ice Shelf (TEIS) from 2013 to 2022. The velocity grids were generated using ITS_LIVE image-pair velocities available throughout the year, ensuring a consistent extent and spatial resolution for each annual composite. These composites were created by stacking all available image pairs and taking the median value for each grid cell. Small data gaps near the grounding line were filled using bilinear interpolation. Each pixel in the grid represents the median value of all available pixels during the specified period. The data are gridded at a spatial resolution of 120m in a polar stereographic projection (EPSG:3031). Speed is given in metres per day (m/yr), and strain rates are given in units/day. Additional funding was received from NE/S006419/1. Creator(s): Banerjee, Debangshu; Lilien, David; Truffer, Martin; Luckman, Adrian; Wild, Christian; Pettit, Erin; Scambos, Ted; Muto, Atsuhiro; Alley, Karen Date Created: 2025-02-21 Repository: USAP-DC (current) License: Creative Commons Attribution Only v4.0 Generic [CC BY 4.0] Spatial Extent(s) West: -106.5, East: -104.5, South: -75.5, North: -74.5 Temporal Extent(s) Start: 2013-01-01 - End: 2022-12-31 Award(s) NSF 1929991 Version: 1 Related Project(s) NSF-NERC: Thwaites-Amundsen Regional Survey and Network (TARSAN) Integrating Atmosphere-Ice-Ocean Processes affecting the Sub-Ice-Shelf Environment Keywords Antarctica Antarctica Cryosphere Glaciers/ice Sheet Glaciology Ice Shelf Remote Sensing Satellite Imagery Thwaites Thwaites Glacier Velocity