The role of subtemperate slip in thermally driven ice stream margin migration [PDF]
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
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Modeling the elastic transmission of tidal stresses to great distances inland in channelized ice streams [PDF]
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.
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Clouds in the atmospheres of extrasolar planets. IV. On the scattering greenhouse effect of CO2 ice particles: Numerical radiative transfer studies [PDF]
Owing to their wavelengths dependent absorption and scattering properties, clouds have a strong impact on the climate of planetary atmospheres. Especially, the potential greenhouse effect of CO2 ice clouds in the atmospheres of terrestrial extrasolar ...
Kitzmann, D.+2 more
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Dynamic behaviour of rutford ice stream [PDF]
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
openaire +4 more sources
Ice-sheet surging and ice-stream formation [PDF]
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
C. Johnson, Andrew C. Fowler
openaire +3 more sources
Basal mechanics of Ice Stream B, west Antarctica: 2. Undrained plastic bed model [PDF]
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).
Engelhardt, Hermann F.+2 more
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Computation of a combined spherical-elastic and viscous-half-space earth model for ice sheet simulation [PDF]
This report starts by describing the continuum model used by Lingle & Clark (1985) to approximate the deformation of the earth under changing ice sheet and ocean loads.
Cathles+7 more
core +3 more sources
Ice flow in the northeast Greenland ice stream [PDF]
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 ...
Joughin, IR, Fahnestock, M, Bamber, JL
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The role of ice stream dynamics in deglaciation [PDF]
AbstractSince 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 sheets are.
Alexander A. Robel+3 more
openaire +7 more sources
Analytical Models of Exoplanetary Atmospheres. IV. Improved Two-stream Radiative Transfer for the Treatment of Aerosols [PDF]
We present a novel generalization of the two-stream method of radiative transfer, which allows for the accurate treatment of radiative transfer in the presence of strong infrared scattering by aerosols.
Heng, Kevin, Kitzmann, Daniel
core +3 more sources