Results 31 to 40 of about 1,304,319 (320)
Ice Streams of the Laurentide Ice Sheet [PDF]
Géographie physique et Quaternaire, 2006 Ice streams had a major influence on the configuration and the stability of the Laurentide Ice Sheet. Their identification is crucial for an understanding of ice sheet behaviour and their importance is reflected by the recent increase in paleo-ice stream research.
Winsborrow, Monica C.M. +2 more
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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
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
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Footprint of the Baltic Ice Stream: geomorphic evidence for shifting ice stream pathways
Boreas, 2023 The Baltic Ice Stream, a large fast‐flowing sector of the last Fennoscandian Ice Sheet that occupied the present‐day Baltic Sea basin, was first conceptualized in the earliest days of glacial geological research in Scandinavia. Landform and sedimentological evidence from the terrestrial margins support the concept and numerical ice‐sheet models ...
Sarah L. Greenwood +4 more
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Upstream flow effects revealed in the EastGRIP ice core using Monte Carlo inversion of a two-dimensional ice-flow model [PDF]
The Cryosphere, 2021 The Northeast Greenland Ice Stream (NEGIS) is the largest active ice stream on the Greenland Ice Sheet (GrIS) and a crucial contributor to the ice-sheet mass balance.
T. A. Gerber +8 more
doaj +1 more source
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
Of isbræ and ice streams [PDF]
Annals of Glaciology, 2003 AbstractFast-flowing ice streams and outlet glaciers provide the major avenues for ice flow from past and present ice sheets. These ice streams move faster than the surrounding ice sheet by a factor of 100 or more. Several mechanisms for fast ice-stream flow have been identified, leading to a spectrum of different ice-stream types.
Martin Truffer, Keith A. Echelmeyer
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Palaeo-ice streams: an introduction [PDF]
Boreas, 2003 [FIRST PARAGRAPH] Ice streams are narrow fast-flowing zones within ice sheets, and in the case of Antarctica are responsible for draining up to 90% of the mass from the ice sheet. It has been shown that Quaternary ice sheets were profoundly, and arguably catastrophically, influenced by the operation of transitory ice streaming.
Clark, C.D. +2 more
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A new approach to inferring basal drag and ice rheology in ice streams, with applications to West Antarctic Ice Streams [PDF]
Journal of Glaciology, 2020 AbstractDrag 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 flow.
Meghana Ranganathan +3 more
openaire +6 more sources
Journal of Glaciology, 2023 Surging and streaming of glaciers are modulated by meltwater availability and pressure which controls mechanical coupling at their beds. Using laboratory-scale experimental modelling and palaeoglaciological mapping, we explore how subglacial drainage ...
Édouard Ravier +3 more
doaj +1 more source