Results 41 to 50 of about 57,626 (157)
Dynamic behaviour of rutford ice stream [PDF]
Annals of Glaciology, 1982 The grounding-line region of Rutford Ice Stream was surveyed from the ground during 1978–79 and 1979–80, and from the air in 1980–81. Maps of surface elevation and ice thickness of an area of 1 000 km2allow the grounding line to be delineated and show that the ice stream consists of several distinct fingers of thick ice trending parallel to the flow ...
Stephenson, S.N, Doake, C.S.M
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, 2021 <div>Ice streams are the arteries through which a large fraction of the ice lost from Antarctica is discharged. With the introduction of "higher order" mechanics, the representation of ice streams in ice sheet models appears to have become more robust, eliminating previously ubiquitous grid effects.
Christian Schoof, Elisa Mantelli
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Subglacial hydrology and the formation of ice streams [PDF]
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2014 Antarctic ice streams are associated with pressurized subglacial meltwater but the role this water plays in the dynamics of the streams is not known. To address this, we present a model of subglacial water flow below ice sheets, and particularly below ice streams.
Kyrke-Smith, T, Katz, R, Fowler, A
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Journal of GlaciologyThe ongoing deceleration of Whillans Ice Stream, West Antarctica, provides an opportunity to investigate the co-evolution of ice-shelf pinning points and ice-stream flux variability.
Hannah Verboncoeur +7 more
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Ice-stream response to ocean tides and the form of the basal sliding law [PDF]
The Cryosphere, 2011 The response of ice streams to ocean tides is investigated. Numerical modelling experiments are conducted using a two-dimensional flow-line model of coupled ice-stream and ice-shelf flow.
G. H. Gudmundsson
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Softening of Temperate Ice by Interstitial Water
Frontiers in Earth Science, 2021 Ice at depth in ice-stream shear margins is thought to commonly be temperate, with interstitial meltwater that softens ice. Models that include this softening extrapolate results of a single experimental study in which ice effective viscosity decreased ...
Conner J. C. Adams +4 more
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Geophysical Research Letters, 2008 Spatially coincident radar and seismic data collected two weeks apart on Rutford Ice Stream were analyzed to investigate the mechanical and hydrological characteristics of the ice‐bed interface.
T. Murray +3 more
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Surface undulations of Antarctic ice streams tightly controlled by bedrock topography [PDF]
The Cryosphere, 2013 Full Stokes flow-line models predict that fast-flowing ice streams transmit information about their bedrock topography most efficiently to the surface for basal undulations with length scales between 1 and 20 times the mean ice thickness.
J. De Rydt +3 more
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Ice-sheet surging and ice-stream formation [PDF]
Annals of Glaciology, 1996 A simplified model of ice-sheet behaviour is described. It combines the assumptions of rapid ice flow, high viscous activation energy and realistic sediment-based sliding dynamics to form a non-linear diffusion-type equation which can display relaxation oscillations analogous to those of surging glaciers, and which may be relevant to large-scale surges
A. C. Fowler, C. Johnson
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High basal melting forming a channel at the grounding line of Ross Ice Shelf, Antarctica
Geophysical Research Letters, 2016 Antarctica's ice shelves are thinning at an increasing rate, affecting their buttressing ability. Channels in the ice shelf base unevenly distribute melting, and their evolution provides insight into changing subglacial and oceanic conditions.
Oliver J. Marsh +6 more
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