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Hektoria and Green Glacier changes 2022-2023 Data DOI: https://doi.org/10.15784/601973 Cite as Ochwat, N., Anderson, R., Antropova, Y., Bernat, M., Berthier, E., Luckman, A., et al. (2025) "Hektoria and Green Glacier changes 2022-2023 " U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601973. Abstract This dataset contains the source data for some of the figures in the paper titled "Record glacier retreat caused by an ice plain calving process," published in Nature Geoscience. Nevertheless, the dataset contains several sub-datasets that document the changes Hektoria and Green Glacier underwent in 2022-2023. This includes velocity profiles extracted from the flowlines of both Hektoria and Green Glacier, as well as the flowlines themselves. There are four elevation profiles from 2011-2022 for Hektoria Glacier, using a variety of digital elevation models. An elevation profile of the terminus of Hektoria Glacier during its rapid retreat. Additionally, calculated retreat rates and iceberg size data are included. Finally, we include shapefiles of the terminus position determined from all available Landsat, Worldview, and Planet imagery during the 2022-2023 retreat period, and the 2021 grounding line. This research was funded by NASA by award “Ice cliff formation and glacier response after ice shelf collapse in the Antarctic Peninsula" (award number: 80NSSC22K0386). Creator(s): Ochwat, Naomi; Scambos, Ted; Anderson, Robert; Winberry, Paul; Luckman, Adrian; Berthier, Etienne; Bernat, Maud; Antropova, Yulia Date Created: 2025-08-18 Repository: USAP-DC (current) License: Creative Commons Attribution Only v4.0 Generic [CC BY 4.0] Spatial Extent(s) West: -64, East: -59, South: -66, North: -64 Temporal Extent(s) Start: 2017-01-01 - End: 2023-01-01 Version: 1 References Naomi Ochwat, Ted Scambos, Robert Anderson et al. Record glacier retreat caused by an ice plain calving process, September 2025, Nature Geoscience [Accepted]. (doi:10.21203/rs.3.rs-5691678/v1) Keywords Antarctic Peninsula Antarctica Cryosphere Elevation Glaciers/ice Sheet Ice Edge Retreat Ice Flow Velocity Iceberg