Results 11 to 20 of about 1,304,319 (320)
Stochastic ice stream dynamics. [PDF]
Proc Natl Acad Sci U S A, 2016 Significance Ice streams form the backbone of the flow field of ice sheets. They are known to exhibit a complex spatiotemporal dynamics, which is largely not well understood. Understanding the controls on such dynamics is crucial to sea level change projections as well as to the interpretation of paleorecords.
Mantelli E, Bertagni MB, Ridolfi L.
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Marine ice sheet instability and ice shelf buttressing of the Minch Ice Stream, northwest Scotland [PDF]
The Cryosphere, 2018 Uncertainties in future sea level projections are dominated by our limited understanding of the dynamical processes that control instabilities of marine ice sheets. The last deglaciation of the British–Irish Ice Sheet offers a valuable example to examine
N. Gandy +7 more
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Ice stream motion facilitated by a shallow-deforming and accreting bed. [PDF]
Nat Commun, 2016 Ice streams drain large portions of ice sheets and play a fundamental role in governing their response to atmospheric and oceanic forcing, with implications for sea-level change. The mechanisms that generate ice stream flow remain elusive.
Spagnolo M +10 more
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Holocene thinning in central Greenland controlled by the Northeast Greenland Ice Stream [PDF]
Nature CommunicationsIce-core records from the interior of the Greenland ice sheet suggest widespread thinning during the Holocene. However, the recurring underestimation of this thinning in numerical models raises concerns about both the veracity of such reconstructions and
Ilaria Tabone +3 more
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Shear margins in upper half of Northeast Greenland Ice Stream were established two millennia ago [PDF]
Nature CommunicationsOnly a few localised ice streams drain most of the ice from the Greenland Ice Sheet. Thus, understanding ice stream behaviour and its temporal variability is crucially important to predict future sea-level change.
Daniela Jansen +19 more
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Geophysical Research Letters, 2019 Ice streams are bounded by abrupt transitions in speed called shear margins. Some shear margins are fixed by subglacial topography, but others are thought to be self‐organizing, evolving by thermal feedback to ice viscosity and basal drag which govern ...
N. Holschuh +2 more
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Dynamics of active subglacial lakes in Recovery Ice Stream. [PDF]
J Geophys Res Earth Surf, 2018 Dow CF +6 more
europepmc +2 more sources
Persistence and variability of ice-stream grounding lines on retrograde bed slopes [PDF]
The Cryosphere, 2016 In many ice streams, basal resistance varies in space and time due to the dynamically evolving properties of subglacial till. These variations can cause internally generated oscillations in ice-stream flow.
A. A. Robel, C. Schoof, E. Tziperman
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Temporal variations in the flow of a large Antarctic ice stream controlled by tidally induced changes in the subglacial water system [PDF]
The Cryosphere, 2015 Observations show that the flow of Rutford Ice Stream (RIS) is strongly modulated by the ocean tides, with the strongest tidal response at the 14.77-day tidal period (Msf). This is striking because this period is absent in the tidal forcing.
S. H. R. Rosier +2 more
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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 ...
Simon Stephenson, C. S. M. Doake
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