Equilibrium Profile of Ice Shelves [PDF]
Journal of Glaciology, 1979 AbstractUsing expressions for ice-shelf creep derived by Weertman (1957) and Thomas (1973[b]) a general method is developed for calculating equilibrium thickness profiles, velocities, and strain-rates for any ice shelf. This is done first for an unconfined glacier tongue and the result agrees well with data for Erebus Glacier tongue (Holdsworth, 1974).
T. J. O. Sanderson
openalex +3 more sources
Supervised classification of slush and ponded water on Antarctic ice shelves using Landsat 8 imagery
Journal of Glaciology, 2022 Surface meltwater is becoming increasingly widespread on Antarctic ice shelves. It is stored within surface ponds and streams, or within firn pore spaces, which may saturate to form slush.
Rebecca L. Dell +6 more
doaj +2 more sources
Deformation of Floating Ice Shelves [PDF]
Journal of Glaciology, 1957 AbstractThe problem of the creep deformation of floating ice shelves is considered. The problem is solved using Glen’s creep law for ice and Nye’s relation of steady-state creep (the analogue of the Lévy-Miles relation in plasticity theory). Good agreement is obtained between an observed creep rate at Maudheim in the Antarctic and that predicted from ...
J. Weertman
openalex +3 more sources
New gravity-derived bathymetry for the Thwaites, Crosson, and Dotson ice shelves revealing two ice shelf populations [PDF]
The Cryosphere, 2020 Ice shelves play a critical role in the long-term stability of ice sheets through their buttressing effect. The underlying bathymetry and cavity thickness are key inputs for modelling future ice sheet evolution.
T. A. Jordan +8 more
doaj +3 more sources
Can unconfined ice shelves provide buttressing via hoop stresses?
Journal of Glaciology, 2020 The stress balance within an ice shelf is key to the resistance, or buttressing, it can provide and in part controls the rate of ice discharge from the upstream ice sheet. Unconfined ice shelves are widely assumed to provide no buttressing.
Martin G. Wearing +2 more
doaj +2 more sources
Formation, Flow, and Disintegration Of Ice Shelves [PDF]
Journal of Glaciology, 1979 AbstractIce shelves may develop either by continued thickening of sea ice that is held fast to the shore, or by the seaward extension of inland ice. For both processes, as well as for an understanding of ablation and of accumulation at the bottom surface of ice shelves, we need to understand melting and freezing processes in relation to salinity ...
G. de Q. Robin
+4 more sources
Troughs developed in ice-stream shear margins precondition ice shelves for ocean-driven breakup. [PDF]
Sci Adv, 2019 Fast-flowing ice shelves may form channels under their margins that promote calving and retreat under warming ocean conditions. Floating ice shelves of fast-flowing ice streams are prone to rift initiation and calving originating along zones of rapid ...
Alley KE +3 more
europepmc +2 more sources
Freshening by glacial meltwater enhances melting of ice shelves and reduces formation of Antarctic Bottom Water. [PDF]
Sci Adv, 2018 Glacial meltwater stops bottom-water formation, allowing warm ocean waters to reach Antarctic ice shelves and drive rapid melting. Strong heat loss and brine release during sea ice formation in coastal polynyas act to cool and salinify waters on the ...
Silvano A +7 more
europepmc +2 more sources
Detection of Surface Crevasses over Antarctic Ice Shelves Using SAR Imagery and Deep Learning Method
Remote Sensing, 2022 Crevasses are formed by glacier movement and the stresses within glacier ice. Knowledge of the crevasses’ distribution is critical for understanding the glacier and ice shelf stability. In this study, we propose an automated crevasse extraction framework
Jingjing Zhao +4 more
doaj +2 more sources
Response of Pacific-sector Antarctic ice shelves to the El Niño/Southern Oscillation. [PDF]
Nat Geosci, 2018 Satellite observations over the past two decades have revealed increasing loss of grounded ice in West Antarctica, associated with floating ice shelves that have been thinning.
Paolo FS +5 more
europepmc +2 more sources