The Cryosphere
The Cryosphere
TC
Articles | Volume 20, issue 11
Articles | Volume 20, issue 11
https://doi.org/10.5194/tc-20-6263-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-20-6263-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 20, issue 11
Research article
 | 
03 Nov 2026
Research article |  | 03 Nov 2026

Seasonal icings reveal subsurface water drainage of a Greenland Ice Sheet outlet glacier

Rebecca McCerery, Joseph A. Graly, Christopher L. Hansen, Kate Winter, William P. Gilhooly III, Trinity L. Hamilton, Moses Jatta, Jeff R. Havig, Felipe Napoleoni, Alicia M. Rutledge, Matthew Terrell, Tanya M. Trott, Kayla Woodie, Bernd Kulessa, Sevi Modestou, Hannah Bahrani, Tori Kennedy, Alexandra Messerli, and Kathy Licht

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Latest update: 03 Nov 2026
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Short summary
Ice cores from Isunnguata Sermia’s forefield reveal how proglacial naled and accreted ices form in Greenland. Naledi build up in winter from precipitation and mineral-rich subglacial water, while accreted ice forms in summer through supercooled water upwelling. Geophysical surveys indicate both are fed by subsurface flows potentially originating from the glacier bed. Here, we present the first conceptual model of these formations in Greenland.
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