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Frequency response of ice streams [PDF]
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 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 +3 more
openaire +4 more sources
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
openaire +3 more sources
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
openaire +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
openaire +2 more sources
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
openaire +3 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, 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
Annals of Glaciology, 2020 Here we use polarimetric measurements from an Autonomous phase-sensitive Radio-Echo Sounder (ApRES) to investigate ice fabric within Whillans Ice Stream, West Antarctica.
T. Jordan +3 more
semanticscholar +1 more source
Sensitivity of the Northeast Greenland Ice Stream to Geothermal Heat
Journal of Geophysical Research: Earth Surface, 2020 Recent observations of ice flow surface velocities have helped improve our understanding of basal processes on Greenland and Antarctica, though these processes still constitute some of the largest uncertainties driving ice flow change today.
Silje Smith-Johnsen +3 more
semanticscholar +1 more source
How dynamic are ice-stream beds? [PDF]
The Cryosphere, 2017 Abstract. Projections of sea-level rise contributions from West Antarctica's dynamically thinning ice streams contain high uncertainty because some of the key processes involved are extremely challenging to observe. An especially poorly observed parameter is sub-decadal stability of ice-stream beds, which may be important for subglacial traction, till ...
Damon Davies +8 more
openaire +8 more sources
Exceptionally high heat flux needed to sustain the Northeast Greenland Ice Stream
The Cryosphere, 2020 . The Northeast Greenland Ice Stream (NEGIS) currently drains more than 10 % of the Greenland Ice Sheet area and has recently undergone significant dynamic changes.
Silje Smith-Johnsen +4 more
semanticscholar +1 more source