Academic Journal
Subglacial Freshwater Drainage Increases Simulated Basal Melt of the Totten Ice Shelf
| العنوان: | Subglacial Freshwater Drainage Increases Simulated Basal Melt of the Totten Ice Shelf |
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| المؤلفون: | David E. Gwyther, Christine F. Dow, Stefan Jendersie, Noel Gourmelen, Benjamin K. Galton‐Fenzi |
| المصدر: | Geophysical Research Letters, Vol 50, Iss 12, Pp n/a-n/a (2023) |
| بيانات النشر: | Wiley, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Geophysics. Cosmic physics |
| مصطلحات موضوعية: | basal melting, subglacial discharge, Totten ice shelf, Antarctica, ice shelves, sea level rise, Geophysics. Cosmic physics, QC801-809 |
| الوصف: | 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. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1944-8007 0094-8276 |
| Relation: | https://doaj.org/toc/0094-8276; https://doaj.org/toc/1944-8007 |
| DOI: | 10.1029/2023GL103765 |
| URL الوصول: | https://doaj.org/article/423cd08b56494dd8a72e6077d43cfb31 |
| رقم الانضمام: | edsdoj.423cd08b56494dd8a72e6077d43cfb31 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19448007 00948276 |
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| DOI: | 10.1029/2023GL103765 |