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Modelling the response of ice shelf basal melting to different ocean cavity environmental regimes


Gwyther, DE and Cougnon, EA and Galton-Fenzi, BK and Roberts, JL and Hunter, JR and Dinniman, MS, Modelling the response of ice shelf basal melting to different ocean cavity environmental regimes, Annals of Glaciology, 57, (73) pp. 131-141. ISSN 0260-3055 (2016) [Refereed Article]


Copyright Statement

Copyright 2016 The Authors Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0)

DOI: doi:10.1017/aog.2016.31


We present simulation results from a version of the Regional Ocean Modeling System modified for ice shelf/ocean interaction, including the parameterisation of basal melting by molecular diffusion alone. Simulations investigate the differences in melting for an idealised ice shelf experiencing a range of cold to hot ocean cavity conditions. Both the pattern of melt and the location of maximum melt shift due to changes in the buoyancy-driven circulation, in a different way to previous studies. Tidal forcing increases both the circulation strength and melting, with the strongest impact on the cold cavity case. Our results highlight the importance of including a complete melt parameterisation and tidal forcing. In response to the 2.4°C ocean warming initially applied to a cold cavity ice shelf, we find that melting will increase by about an order of magnitude (24 × with tides and  41 × without tides).

Item Details

Item Type:Refereed Article
Keywords:ice shelf, basal melting, numerical modelling, Antarctica
Research Division:Earth Sciences
Research Group:Oceanography
Research Field:Physical oceanography
Objective Division:Environmental Management
Objective Group:Management of Antarctic and Southern Ocean environments
Objective Field:Antarctic and Southern Ocean oceanic processes
UTAS Author:Gwyther, DE (Dr David Gwyther)
UTAS Author:Cougnon, EA (Dr Eva Cougnon)
UTAS Author:Galton-Fenzi, BK (Dr Ben Galton-Fenzi)
UTAS Author:Roberts, JL (Dr Jason Roberts)
UTAS Author:Hunter, JR (Dr John Hunter)
ID Code:112300
Year Published:2016
Web of Science® Times Cited:17
Deposited By:Oceans and Cryosphere
Deposited On:2016-11-03
Last Modified:2018-03-26
Downloads:176 View Download Statistics

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