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 +2 more sources
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 +6 more sources
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
doaj +3 more sources
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 +5 more sources
Basal topographic controls on the stability of the West Antarctic ice sheet: lessons from Foundation Ice Stream [PDF]
Annals of Glaciology, 2017 Using observations of basal topography, ice thickness and modern accumulation rates, we use theory and a dynamic flowline model to examine the sensitivity of Antarctica's Foundation Ice Stream to changes in sea level, accumulation and buttressing at the ...
Kathleen Huybers +2 more
doaj +2 more sources
Footprint of the Baltic Ice Stream: geomorphic evidence for shifting ice stream pathways [PDF]
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 +3 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
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
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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
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Repeated ice streaming on the northwest Greenland continental shelf since the onset of the Middle Pleistocene Transition [PDF]
The Cryosphere, 2020 Ice streams provide a fundamental control on ice sheet discharge and depositional patterns along glaciated margins. This paper investigates ancient ice streams by presenting the first 3D seismic geomorphological analysis of a major glacigenic succession ...
A. M. W. Newton +4 more
doaj +1 more source