Results 41 to 50 of about 217,627 (348)

Subtemperate sliding reduces periodicity of ice stream temporal variability in a simple model

Journal of Glaciology
Understanding the formation and evolution of fast flowing ice streams is essential to projecting the response of ice sheets to climate forcings. Slow-flowing or stagnant ice streams can slide at low velocities over a bed that is below the bulk melting ...
Logan Elliott Mann, Colin Meyer, Alexander Robel, Elisa Mantelli   +3 more
doaj   +1 more source

Multianalytical provenance analysis of Eastern Ross Sea LGM till sediments (Antarctica): Petrography, geochronology, and thermochronology detrital data [PDF]

, 2017
In order to reveal provenance of detrital sediments supplied by West Antarctic Ice Sheet (WAIS), 19 glaciomarine cores of Last Glacial Maximum age were analyzed from Eastern Ross Sea and Sulzberger Bay.
Andreucci, Benedetta, Langone, Antonio, Perotti, Matteo, Talarico, Franco, Zattin, Massimiliano   +4 more
core   +2 more sources

Treatment of the ice-shelf backpressure and buttressing in two horizontal dimensions

Journal of Glaciology
The ice discharge from the grounded parts of marine ice sheets into the ocean is modulated by their floating extensions – ice shelves. The ice-shelf impact on the grounded ice is typically described as ‘backpressure’ or ‘buttressing’.
Olga Sergienko
doaj   +1 more source

A new approach to inferring basal drag and ice rheology in ice streams, with applications to West Antarctic Ice Streams

Journal of Glaciology, 2021
Drag at the bed and along the lateral margins are the primary forces resisting flow in outlet glaciers. Simultaneously inferring these parameters is challenging since basal drag and ice viscosity are coupled in the momentum balance, which governs ice ...
Meghana Ranganathan, Brent Minchew, Colin R. Meyer, G. Hilmar Gudmundsson   +3 more
doaj   +1 more source

A temperate former West Antarctic ice sheet suggested by an extensive zone of bed channels [PDF]

, 2014
Several recent studies predict that the West Antarctic Ice Sheet will become increasingly unstable under warmer conditions. Insights on such change can be assisted through investigations of the subglacial landscape, which contains imprints of former ice ...
Anne M. Le Brocq, Bamber, Bartholomew, Bartholomew, Cook, Cowton, David M. Rippin, DeConto, Dowsett, Fausto Ferraccioli, Fowler, Fretwell, Haran, Hugh F.J. Corr, Jordan, Joughin, Kathryn C. Rose, Le Brocq, Lewis, Martin J. Siegert, Miller, Mote, Naish, Neil Ross, Nitsche, Pritchard, Raymo, Rignot, Robert G. Bingham, Ross, Ross, Schoof, Shepherd, Smith, Sugden, Tom A. Jordan, Trusel, Wingham, Wright, Wright, Young, Zachos   +41 more
core   +2 more sources

Insights into ice stream dynamics through modelling their response to tidal forcing [PDF]

The Cryosphere, 2014
The tidal forcing of ice streams at their ocean boundary can serve as a natural experiment to gain an insight into their dynamics and constrain the basal sliding law.
S. H. R. Rosier, G. H. Gudmundsson, J. A. M. Green   +2 more
doaj   +1 more source

Ice Sheets and Ice Streams: Thoughts on the Cordilleran Ice Sheet Symposium [PDF]

, 1991
This paper comments on preconceptions about what is meant by the terms "Cordilleran Ice Sheet" and "ice stream". Contemporary Antarctic ice streams are described.
Mathews, William H.
core   +1 more source

Interpreting englacial layer deformation in the presence of complex ice flow history with synthetic radargrams

Annals of Glaciology, 2020
Fast ice flow on the Antarctic continent constitutes much of the mass loss from the ice sheet. However, geophysical methods struggle to constrain ice flow history at depth, or separate the signatures of topography, ice dynamics and basal conditions on ...
Cooper W. Elsworth, Dustin M. Schroeder, Matthew R. Siegfried   +2 more
doaj   +1 more source

Evidence that seismic anisotropy captures upstream palaeo-ice fabric: Implications on present-day deformation at Whillans Ice Stream, Antarctica

Journal of Glaciology
Understanding deformation and slip at ice streams, which are responsible for 90% of Antarctic ice loss, are vital for accurately modelling large-scale ice flow. Ice crystal orientation fabric (COF) has a first-order effect on ice stream deformation.
Justin Leung, Thomas Samuel Hudson, John-Michael Kendall, Grace Barcheck   +3 more
doaj   +1 more source

Ice Streams of the Laurentide Ice Sheet [PDF]

Géographie physique et Quaternaire, 2006
Ice streams had a major influence on the configuration and the stability of the Laurentide Ice Sheet. Their identification is crucial for an understanding of ice sheet behaviour and their importance is reflected by the recent increase in paleo-ice stream research.
Winsborrow, Monica C.M., Clark, Chris D., Stokes, Chris R.   +2 more
openaire   +2 more sources