Results 11 to 20 of about 1,312,001 (200)

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, Phillips E, Piotrowski JA, Rea BR, Clark CD, Stokes CR, Carr SJ, Ely JC, Ribolini A, Wysota W, Szuman I.   +10 more
europepmc   +2 more sources

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, M. A. Fahnestock, Jonathan Bamber   +2 more
openalex   +3 more sources

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
openalex   +2 more sources

Dynamics of active subglacial lakes in Recovery Ice Stream. [PDF]

J Geophys Res Earth Surf, 2018
Dow CF, Werder MA, Babonis G, Nowicki S, Walker RT, Csatho B, Morlighem M.   +6 more
europepmc   +2 more sources

The role of ice stream dynamics in deglaciation [PDF]

Journal of Geophysical Research: Earth Surface, 2016
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.
A. Robel, E. Tziperman
semanticscholar   +5 more sources

Holocene ice-stream shutdown and drainage basin reconfiguration in northeast Greenland

Nature Geoscience, 2022
Reliable knowledge of ice discharge dynamics for the Greenland ice sheet via its ice streams is essential if we are to understand its stability under future climate scenarios.
S. Franke, P. Bons, Julien Westhoff, I. Weikusat, T. Binder, Kyra Streng, D. Steinhage, V. Helm, O. Eisen, J. Paden, G. Eagles, D. Jansen   +11 more
semanticscholar   +1 more source

A dynamic saline groundwater system mapped beneath an Antarctic ice stream

Science, 2022
Antarctica’s fast-flowing ice streams drain the ice sheet, with their velocity modulated by subglacial water systems. Current knowledge of these water systems is limited to the shallow portions near the ice-bed interface, but hypothesized deeper ...
C. Gustafson, K. Key, M. Siegfried, J. P. Winberry, H. Fricker, R. Venturelli, A. Michaud   +6 more
semanticscholar   +1 more source

Maximum extent and readvance dynamics of the Irish Sea Ice Stream and Irish Sea Glacier since the Last Glacial Maximum

Journal of Quaternary Science, 2021
The BRITICE‐CHRONO Project has generated a suite of recently published radiocarbon ages from deglacial sequences offshore in the Celtic and Irish seas and terrestrial cosmogenic nuclide and optically stimulated luminescence ages from adjacent onshore ...
J. Scourse, R. Chiverrell, R. Smedley, D. Small, M. Burke, M. Saher, K. V. Landeghem, G. Duller, C. Ó. Cofaigh, M. Bateman, S. Benetti, S. Bradley, L. Callard, D. Evans, D. Fabel, Geraint T. H. Jenkins, S. Mccarron, A. Medialdea, S. Moreton, Xianjiao Ou, D. Praeg, D. Roberts, H. Roberts, C. Clark   +23 more
semanticscholar   +1 more source

Antarctic palaeo-ice streams [PDF]

Earth-Science Reviews, 2012
We review the geomorphological, sedimentological and chronological evidence for palaeo-ice streams on the continental shelf of Antarctica and use this information to investigate basal conditions and processes, and to identify factors controlling grounding-line retreat.
Livingstone, Stephen J., Ó Cofaigh, Colm, Stokes, Chris R., Hillenbrand, Claus-Dieter, Vieli, Andreas, Jamieson, Stewart S.R.   +5 more
openaire   +6 more sources

Thermal controls on ice stream shear margins

Journal of Glaciology, 2021
Ice stream discharge responds to a balance between gravity, basal friction and lateral drag. Appreciable viscous heating occurs in shear margins between ice streams and adjacent slow-moving ice ridges, altering the temperature-dependent viscosity ...
Pierce G. Hunter, C. Meyer, B. Minchew, M. Haseloff, A. Rempel   +4 more
semanticscholar   +1 more source