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https://doi.org/10.5194/egusphere-2024-3105
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/egusphere-2024-3105
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
24 Oct 2024
| 24 Oct 2024
Status: this preprint is open for discussion.
Brief Communications: Tides and Damage as Drivers of Lake Drainages on Shackleton Ice Shelf
Abstract. To investigate the drivers of lake drainages in Antarctica, we analyzed optical remote sensing data from the Shackleton Ice Shelf in East Antarctica over three melt seasons. Our study identified one drainage event in 2018–2019, eleven in 2019–2020, and one in 2020–2021. All identified drainages occurred in regions with medium to high levels of ice shelf damage and with active damage development. Additionally, 12 out of 13 drainages coincided with increases in tidal heights. These findings provide insights into the factors influencing current lake drainages in Antarctica and may help in predicting future drainage events.
How to cite. Sommer, J., Izeboud, M., de Roda Husman, S., Wouters, B., and Lhermitte, S.: Brief Communications: Tides and Damage as Drivers of Lake Drainages on Shackleton Ice Shelf, EGUsphere [preprint], https://doi.org/10.5194/egusphere-2024-3105, 2024.
Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
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Julius Sommer
Department of Chemical Engineering, Delft University of Technology, Delft, 2628CN, The Netherlands
Department of Geoscience & Remote Sensing, Delft University of Technology, Delft, 2628CN, The Netherlands
Sophie de Roda Husman
Department of Geoscience & Remote Sensing, Delft University of Technology, Delft, 2628CN, The Netherlands
Bert Wouters
Department of Geoscience & Remote Sensing, Delft University of Technology, Delft, 2628CN, The Netherlands
Stef Lhermitte
Department of Geoscience & Remote Sensing, Delft University of Technology, Delft, 2628CN, The Netherlands
Department of Earth & Environmental Sciences, KU Leuven, Leuven, B-3001, Belgium
Short summary
Ice shelves, the floating extensions of Antarctica’s ice sheet, play a crucial role in preventing mass ice loss, and understanding their stability is crucial. If surface meltwater lakes drain rapidly through fractures, the ice shelf can destabilize. We analyzed satellite images of three years from the Shackleton Ice Shelf and found that lake drainages occurred in areas where damage is present and developing, and coincided with rising tides, offering insights into the drivers of this process.
Ice shelves, the floating extensions of Antarctica’s ice sheet, play a crucial role in...