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Strong Ocean Melting Feedback During the Recent Retreat of Thwaites Glacier

التفاصيل البيبلوغرافية
العنوان: Strong Ocean Melting Feedback During the Recent Retreat of Thwaites Glacier
المؤلفون: Paul R. Holland, Suzanne L. Bevan, Adrian J. Luckman
المصدر: Geophysical Research Letters, Vol 50, Iss 8, Pp n/a-n/a (2023)
بيانات النشر: Wiley, 2023.
سنة النشر: 2023
المجموعة: LCC:Geophysics. Cosmic physics
مصطلحات موضوعية: ice‐ocean interaction, sea‐level rise, Southern Ocean, Antarctic Ice Sheet, Thwaites Glacier, Geophysics. Cosmic physics, QC801-809
الوصف: Abstract Accelerating ice loss from Thwaites Glacier is contributing approximately 5% of global sea‐level rise, and could add tens of centimeters to sea level over the coming centuries. We use an ocean model to calculate sub‐ice melting for a succession of Digital Elevation Models of the main trunk of Thwaites Glacier from 2011 to 2022. The ice evolution during this period induces a strong geometrical feedback onto melting. Ice thinning and retreat provides a larger melting area, thicker and better‐connected sub‐ice water column, and steeper ice base. This leads to stronger sub‐ice ocean currents, increasing melting by over 30% without any change in forcing from wider ocean conditions. This geometrical feedback over just 12 years is comparable to melting changes arising from plausible century‐scale changes in ocean conditions and subglacial meltwater inflow. These findings imply that ocean‐driven ice loss from Thwaites Glacier may only be weakly influenced by anthropogenic emissions mitigation.
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: 10.1029/2023GL103088
URL الوصول: https://doaj.org/article/a1f8beed2bc64947b40dc40de0d38eb9
رقم الأكسشن: edsdoj.1f8beed2bc64947b40dc40de0d38eb9
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:19448007
00948276
DOI:10.1029/2023GL103088