Results 1 to 10 of about 16,380 (300)
Frequency response of ice streams. [PDF]
Proc Math Phys Eng Sci, 2012 Changes at the grounding line of ice streams have consequences for inland ice dynamics and hence sea level. Despite substantial evidence documenting upstream propagation of frontal change, the mechanisms by which these changes are transmitted inland are not well understood.
Williams CR, Hindmarsh RC, Arthern RJ.
europepmc +7 more sources
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.
Richard F Katz
exaly +6 more sources
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.
Stephen J Livingstone +2 more
exaly +8 more sources
A new approach to inferring basal drag and ice rheology in ice streams, with applications to West Antarctic Ice Streams [PDF]
Journal of Glaciology, 2021 Drag at the bed and along the lateral margins are the primary forces resisting flow in outlet glaciers. Simultaneously inferring these parameters is challenging since basal drag and ice viscosity are coupled in the momentum balance, which governs ice ...
Meghana Ranganathan +3 more
doaj +5 more sources
Ice-stream flow switching by up-ice propagation of instabilities along glacial marginal troughs [PDF]
The Cryosphere, 2019 Ice-stream networks constitute the arteries of ice sheets through which large volumes of glacial ice are rapidly delivered from the continent to the ocean.
E. Brouard, P. Lajeunesse
doaj +1 more source
Subglacial hydrological control on flow of an Antarctic Peninsula palaeo-ice stream [PDF]
The Cryosphere, 2019 Basal hydrological systems play an important role in controlling the dynamic behaviour of ice streams. Data showing their morphology and relationship to geological substrates beneath modern ice streams are, however, sparse and difficult to collect.
R. D. Larter +13 more
doaj +1 more source
Journal of Glaciology, 2023 Investigations of the time-dependent behavior of marine ice sheets and their sensitivity to basal conditions require numerical models because existing theoretical analyses focus only on steady-state configurations primarily with a power-law basal shear ...
Olga Sergienko, Marianne Haseloff
doaj +1 more source
Modelled subglacial floods and tunnel valleys control the life cycle of transitory ice streams [PDF]
The Cryosphere, 2018 Ice streams are corridors of fast-flowing ice that control mass transfers from continental ice sheets to oceans. Their flow speeds are known to accelerate and decelerate, their activity can switch on and off, and even their locations can shift ...
T. Lelandais +6 more
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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.
J. Thompson, M. Simons, V. C. Tsai
doaj +1 more source
Bed topography and marine ice-sheet stability
Journal of Glaciology, 2022 This paper examines the effect of basal topography and strength on the grounding-line position, flux and stability of rapidly-sliding ice streams.
Olga V. Sergienko, Duncan J. Wingham
doaj +1 more source