@article{9922908211374bad9f9924b0a086f17f,
title = "Subglacial Freshwater Drainage Increases Simulated Basal Melt of the Totten Ice Shelf",
abstract = "Subglacial freshwater discharge from beneath Antarctic glaciers likely has a strong impact on ice shelf basal melting. However, the difficulty in directly observing subglacial flow highlights the importance of modeling these processes. We use an ocean model of the Totten Ice Shelf cavity into which we inject subglacial discharge derived from a hydrology model applied to Aurora Subglacial Basin. Our results show (a) discharge increases melting in the vicinity of the outflow region, which correlates with features observed in surface elevation maps and satellite-derived melt maps, with implications for ice shelf stability; (b) the change in melting is driven by the formation of a buoyant plume rather than the addition of heat; and (c) the buoyant plume originating from subglacial discharge-driven melting is far-reaching. Basal melting induced by subglacial hydrology is thus important for ice shelf stability, but is absent from almost all ice-ocean models.",
author = "Gwyther, {David E.} and Dow, {Christine F.} and Stefan Jendersie and Noel Gourmelen and Galton‐fenzi, {Benjamin K.}",
note = "Funding Information: We thank Kate Hedstrom and John Wilkin for model configuration advice; Keith Nicholls for illuminating discussions on the thermal impact of subglacial discharge; and, Xylar Asay-Davis and two anonymous reviewers for comments that improved this manuscript. There are no real or perceived financial conflicts of interests for any author. Maps produced with AMT (Greene, Gwyther, & Blankenship, 2017) and CDT (Greene et al., 2019). CD was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC; RGPIN-03761-2017) and the Canada Research Chairs Program (950-231237). NG was supported via the European Space Agency Polar+Ice Shelves project 4000132186/20/I-EF. BG-F received support from the Australian Government as part of the Antarctic Science Collaboration Initiative programme (Project ASCI000002). This research was undertaken with assistance from the National Computational Infrastructure. Open access publishing facilitated by The University of Queensland, as part of the Wiley - The University of Queensland agreement via the Council of Australian University Librarians. Funding Information: We thank Kate Hedstrom and John Wilkin for model configuration advice; Keith Nicholls for illuminating discussions on the thermal impact of subglacial discharge; and, Xylar Asay‐Davis and two anonymous reviewers for comments that improved this manuscript. There are no real or perceived financial conflicts of interests for any author. Maps produced with AMT (Greene, Gwyther, & Blankenship, 2017 ) and CDT (Greene et al., 2019 ). CD was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC; RGPIN‐03761‐2017) and the Canada Research Chairs Program (950‐231237). NG was supported via the European Space Agency Polar+Ice Shelves project 4000132186/20/I‐EF. BG‐F received support from the Australian Government as part of the Antarctic Science Collaboration Initiative programme (Project ASCI000002). This research was undertaken with assistance from the National Computational Infrastructure. Open access publishing facilitated by The University of Queensland, as part of the Wiley ‐ The University of Queensland agreement via the Council of Australian University Librarians. Publisher Copyright: {\textcopyright} 2023. The Authors.",
year = "2023",
month = jun,
day = "28",
doi = "10.1029/2023GL103765",
language = "English",
volume = "50",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "Wiley-Blackwell",
number = "12",
}