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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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
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Sensitivity of the Weddell Sea sector ice streams to sub-shelf melting and surface accumulation [PDF]
The Cryosphere, 2014 A recent ocean modelling study indicates that possible changes in circulation may bring warm deep-ocean water into direct contact with the grounding lines of the Filchner–Ronne ice streams, suggesting the potential for future ice losses from this sector ...
A. P. Wright +10 more
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Radar attenuation demonstrates advective cooling in the Siple Coast ice streams
Journal of Glaciology, 2023 Ice streams are warmed by shear strain, both vertical shear near the bed and lateral shear at the margins. Warm ice deforms more easily, establishing a positive feedback loop in an ice stream where fast flow leads to warm ice and then to even faster flow.
Benjamin H. Hills +4 more
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Journal of Glaciology, 2023 The dynamics of the Greenland Ice Sheet are affected by surface meltwater reaching the base of the ice, altering ice contact with the bedrock. Lack of understanding of this evolution hampers the ability to predict the effects of increasing temperatures ...
Signe H. Larsen +5 more
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A geomorphological overview of glacial landforms on the Icelandic continental shelf [PDF]
, 2009 The availability of a bathymetric database that covers about 80% of the Icelandic shelf has made it possible to produce a geomorphological map of the glacial landforms.
Clark, C.D., Spagnolo, M.
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Stochastic ice stream dynamics [PDF]
Proceedings of the National Academy of Sciences, 2016 Significance Ice streams form the backbone of the flow field of ice sheets. They are known to exhibit a complex spatiotemporal dynamics, which is largely not well understood. Understanding the controls on such dynamics is crucial to sea level change projections as well as to the interpretation of paleorecords.
MANTELLI, ELISA +2 more
openaire +3 more sources
Thermomechanical modelling of the Scandinavian ice sheet: implications for ice-stream formation [PDF]
, 1999 This work attempts to explain the fan-like landform assemblages observed in satellite images of the area covered by the former Scandinavian ice sheet (SIS). These assemblages have been interpreted as evidence of large ice streams within the SIS.
Baldwin, DJ, Payne, AJ
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Englacial Pore Water Localizes Shear in Temperate Ice Stream Margins [PDF]
, 2019 The margins of fast‐moving ice streams are characterized by steep velocity gradients. Some of these gradients cannot be explained by a temperature‐dependent viscosity alone.
Haseloff, Marianne +2 more
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