USAP-DC

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Pinning-point shear-zone fractures in Thwaites Eastern Ice Shelf (2002 - 2022) Data DOI: https://doi.org/10.15784/601903 Cite as Banerjee, D., Alley, K., Lilien, D., Luckman, A., Muto, A., Pettit, E. C., et al. (2025) "Pinning-point shear-zone fractures in Thwaites Eastern Ice Shelf (2002 - 2022)" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601903. Abstract These datasets include detailed digitized shapefiles of surface fractures (polylines) and internal mélange zones (polygons) within the pinning-point shear zone of the Thwaites Eastern Ice Shelf. They were created using high-resolution (15-meter) panchromatic bands from Landsat 7, 8, and 9, with data from 2002 to 2022. Monthly digitization from January 2020 to July 2022 was also performed using preprocessed Sentinel-1 Synthetic Aperture Radar (SAR) images. Each feature includes attributes such as length and orientation, recorded in the EPSG:3031 coordinate reference system, and detailed in the attribute table. 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: 2002-01-01 - 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 Cryosphere Fractures Glaciers/ice Sheet Glaciology Ice Shelf Thwaites Thwaites