Results 41 to 50 of about 5,299 (206)

Basal crevasses in Larsen C Ice Shelf and implications for their global abundance [PDF]

The Cryosphere, 2012
Basal crevasses extend upwards from the base of ice bodies and can penetrate more than halfway through the ice column under conditions found commonly on ice shelves.
A. Luckman, D. Jansen, B. Kulessa, E. C. King, P. Sammonds, D. I. Benn   +5 more
doaj   +1 more source

The effect of landfast sea ice buttressing on ice dynamic speedup in the Larsen B embayment, Antarctica [PDF]

The Cryosphere
We observe the evacuation of 11-year-old landfast sea ice in the Larsen B embayment on the East Antarctic Peninsula in January 2022, which was in part triggered by warm atmospheric conditions and strong offshore winds.
T. Surawy-Stepney, A. E. Hogg, S. L. Cornford, B. J. Wallis, B. J. Davison, H. L. Selley, R. A. W. Slater, E. K. Lie, L. Jakob, A. Ridout, N. Gourmelen, N. Gourmelen, B. I. D. Freer, B. I. D. Freer, S. F. Wilson, A. Shepherd   +15 more
doaj   +1 more source

Ice viscosity is more sensitive to stress than commonly assumed

Communications Earth & Environment, 2022
The rate of deformation in Antarctic ice shelves is proportional to stress to the power of 4, not 3 as often used in models, according to a calibration of Glen’s Flow Law with satellite remote sensing data from Antarctic ice shelves.
Joanna D. Millstein, Brent M. Minchew, Samuel S. Pegler   +2 more
doaj   +1 more source

Evaluating CMIP6 models for near-surface air temperature projections over Antarctic ice shelves

Journal of Glaciology
The meltwater-driven disintegration of the Larsen B ice shelf has raised concerns that other ice shelves may face similar vulnerabilities as global temperatures rise.
Maya Fields, Jeremy Bassis, Samuel B Kachuck, Mark Moldwin, Cécile Agosta   +4 more
doaj   +1 more source

Seasonal variability of ocean heat transport and ice-shelf basal melt around Antarctica [PDF]

The Cryosphere
The delivery of ocean heat to Antarctic ice shelves is due to intrusions of waters warmer than the local freezing point temperature. Changes in the supply of ocean heat will determine how rapidly ice shelves melt at their base, which affects Antarctic ...
F. Boeira Dias, F. Boeira Dias, M. H. England, M. H. England, A. K. Morrison, B. K. Galton-Fenzi, B. K. Galton-Fenzi, B. K. Galton-Fenzi   +7 more
doaj   +1 more source

Simulated melt rates for the Totten and Dalton ice shelves [PDF]

Ocean Science, 2014
The Totten Glacier is rapidly losing mass. It has been suggested that this mass loss is driven by changes in oceanic forcing; however, the details of the ice–ocean interaction are unknown.
D. E. Gwyther, B. K. Galton-Fenzi, J. R. Hunter, J. L. Roberts   +3 more
doaj   +1 more source

Equilibrium Profile of Ice Shelves

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).
openaire   +2 more sources

Modelling the influence of marine ice on the dynamics of an idealised ice shelf

Journal of Glaciology, 2023
Understanding the dynamic behaviour of ice shelves, specifically the controls on their ability to buttress the flow of ice into the ocean, is critical for predicting future ice-sheet contributions to sea level rise.
Lisa Craw, Felicity S. McCormack, Sue Cook, Jason Roberts, Adam Treverrow   +4 more
doaj   +1 more source

Ocean-excited plate waves in the Ross and Pine Island Glacier ice shelves

Journal of Glaciology, 2018
Ice shelves play an important role in buttressing land ice from reaching the sea, thus restraining the rate of grounded ice loss. Long-period gravity-wave impacts excite vibrations in ice shelves that can expand pre-existing fractures and trigger iceberg
ZHAO CHEN, PETER D. BROMIRSKI, PETER GERSTOFT, RALPH A. STEPHEN, DOUGLAS A. WIENS, RICHARD C. ASTER, ANDREW A. NYBLADE   +6 more
doaj   +1 more source

Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP)

Journal of Glaciology, 2020
Antarctica's ice shelves modulate the grounded ice flow, and weakening of ice shelves due to climate forcing will decrease their ‘buttressing’ effect, causing a response in the grounded ice.
Sainan Sun, Frank Pattyn, Erika G. Simon, Torsten Albrecht, Stephen Cornford, Reinhard Calov, Christophe Dumas, Fabien Gillet-Chaulet, Heiko Goelzer, Nicholas R. Golledge, Ralf Greve, Matthew J. Hoffman, Angelika Humbert, Elise Kazmierczak, Thomas Kleiner, Gunter R. Leguy, William H. Lipscomb, Daniel Martin, Mathieu Morlighem, Sophie Nowicki, David Pollard, Stephen Price, Aurélien Quiquet, Hélène Seroussi, Tanja Schlemm, Johannes Sutter, Roderik S. W. van de Wal, Ricarda Winkelmann, Tong Zhang   +28 more
doaj   +1 more source