Articles | Volume 19, issue 6
https://doi.org/10.5194/tc-19-2045-2025
https://doi.org/10.5194/tc-19-2045-2025
Research article
 | 
11 Jun 2025
Research article |  | 11 Jun 2025

Grounded ridge detection and characterization along the Alaska Arctic coastline using ICESat-2 surface height retrievals

Kennedy A. Lange, Alice C. Bradley, Kyle Duncan, and Sinéad L. Farrell

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Cited articles

Adams, B. and Observers of coastal Arctic Alaska: Local Observations from the Seasonal Ice Zone Observing Network (SIZONet) and Alaska Arctic Observatory and Knowledge Hub (AAOKH), Version 2., https://doi.org/10.7265/jhws-b380, 2022. a, b
Amante, C. J.: Estimating coastal digital elevation model uncertainty, J. Coast. Res., 34, 1382–1397, 2018. a
Anderson, D. L.: Growth Rate of Sea Ice, J. Glaciol., 3, 1170–1172, https://doi.org/10.3189/S0022143000017676, 1961. a, b
Barker, A. and Timco, G.: Maximum pile-up heights for grounded ice rubble, Cold Reg. Sci. Technol., 135, 62–75, 2017. a, b
Barnes, P. W., Reimnitz, E., and Fox, D.: Ice rafting of fine-grained sediment, a sorting and transport mechanism, Beaufort Sea, Alaska, J. Sediment. Res., 52, 493–502, 1982. a
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Short summary
Grounded sea ice ridges stabilize nearshore sea ice by anchoring it in the seafloor. In this study, we develop a method to identify grounded ridges in satellite data and measure the height, depth, distance from shore, and width of a thousand ridges across the Alaska Arctic, finding regional differences in these metrics across the coastline. This method lays the groundwork for a better understanding of nearshore ice stability, holding importance for Arctic community food security and safety. 
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