Results 1 to 10 of about 401,804 (204)
Modeling the elastic transmission of tidal stresses to great distances inland in channelized ice streams [PDF]
The Cryosphere, 2014 Geodetic surveys suggest that ocean tides can modulate the motion of Antarctic ice streams, even at stations many tens of kilometers inland from the grounding line.
Simons, M., Thompson, J., Tsai, V. C.
core +11 more sources
The role of subtemperate slip in thermally driven ice stream margin migration [PDF]
The Cryosphere, 2018 The amount of ice discharged by an ice stream depends on its width, and the widths of unconfined ice streams such as the Siple Coast ice streams in West Antarctica have been observed to evolve on decadal to centennial timescales.
Gagliardini, Olivier +2 more
core +5 more sources
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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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, Clare Johnson
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Ice flow in the northeast Greenland ice stream [PDF]
Annals of Glaciology, 2000 AbstractWe have measured ice flow and detailed topography in northeastern Greenland using satellite-based synthetic-aperture radar (SAR) interferometry. The subject of this study is the large ice stream that drains this quadrant of the ice sheet. A single SAR interferogram allows the measurement of one component of motion over a several-day-long ...
Ian Joughin +2 more
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Basal mechanics of Ice Stream B, west Antarctica: 2. Undrained plastic bed model [PDF]
, 2000 Based on the results of our studies of the physical conditions beneath Ice Stream B, we formulate a new analytical ice stream model, the undrained plastic bed model (henceforth the UPB model).
Sławek Tulaczyk +2 more
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Energy balance of ice streams [PDF]
Journal of Glaciology, 2000 AbstractAnalysis of the cross-flow transmission of force from the central parts of a well-lubricated ice stream to its margins shows that there is a corresponding shift in the lateral location of motion-induced heat generation. The rate of basal heat generation in the center can be substantially smaller than the local rate of potential energy loss ...
C. F. Raymond
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The role of ice stream dynamics in deglaciation [PDF]
Journal of Geophysical Research: Earth Surface, 2016 Since the mid-Pleistocene transition, deglaciation has occurred only after ice sheets have grown large while experiencing several precession and obliquity cycles, indicating that large ice sheets are more sensitive to Milankovitch forcing than small ice ...
Robel, Alexander A., Tziperman, Eli
core +6 more sources
Sensitivity of Heinrich-type ice-sheet surge characteristics to boundary forcing perturbations [PDF]
Climate of the Past, 2023 Heinrich-type ice-sheet surges are one of the prominent signals of glacial climate variability. They are characterised as abrupt, quasi-periodic episodes of ice-sheet instabilities during which large numbers of icebergs are released from the Laurentide ...
C. Schannwell +3 more
doaj +1 more source
Shear-margin melting causes stronger transient ice discharge than ice-stream melting in idealized simulations [PDF]
The Cryosphere, 2022 Basal ice-shelf melting is the key driver of Antarctica's increasing sea-level contribution. In diminishing the buttressing force of the ice shelves that fringe the ice sheet, the melting increases the ice discharge into the ocean.
J. Feldmann +7 more
doaj +1 more source