Stochastic ice stream dynamics [PDF]
Proc Natl Acad Sci U S A, 2016 Ice streams are narrow corridors of fast-flowing ice that constitute the arterial drainage network of ice sheets. Therefore, changes in ice stream flow are key to understanding paleoclimate, sea level changes, and rapid disintegration of ice sheets ...
MANTELLI, ELISA +2 more
core +6 more sources
Crystal orientation fabric anisotropy causes directional hardening of the Northeast Greenland Ice Stream [PDF]
Nature Communications, 2023 The dynamic mass loss of ice sheets constitutes one of the biggest uncertainties in projections of ice-sheet evolution. One central, understudied aspect of ice flow is how the bulk orientation of the crystal orientation fabric translates to the ...
Tamara Annina Gerber +22 more
doaj +2 more sources
Interplay of grounding-line dynamics and sub-shelf melting during retreat of the Bjørnøyrenna Ice Stream [PDF]
Scientific Reports, 2018 The Barents Sea Ice Sheet was a marine-based ice sheet, i.e., it rested on the Barents Sea floor during the Last Glacial Maximum (21 ky BP). The Bjørnøyrenna Ice Stream was the largest ice stream draining the Barents Sea Ice Sheet and is regarded as an ...
Michele Petrini +9 more
doaj +2 more sources
Shear-margin melting causes stronger transient ice discharge than ice-stream melting in idealized simulations [PDF]
The Cryosphere, 2022 Basal ice-shelf melting is the key driver of Antarctica's increasing sea-level contribution. In diminishing the buttressing force of the ice shelves that fringe the ice sheet, the melting increases the ice discharge into the ocean.
J. Feldmann +7 more
doaj +3 more sources
Marine ice sheet instability and ice shelf buttressing of the Minch Ice Stream, northwest Scotland [PDF]
The Cryosphere, 2018 Uncertainties in future sea level projections are dominated by our limited understanding of the dynamical processes that control instabilities of marine ice sheets. The last deglaciation of the British–Irish Ice Sheet offers a valuable example to examine
N. Gandy +7 more
doaj +3 more sources
Holocene thinning in central Greenland controlled by the Northeast Greenland Ice Stream [PDF]
Nature CommunicationsIce-core records from the interior of the Greenland ice sheet suggest widespread thinning during the Holocene. However, the recurring underestimation of this thinning in numerical models raises concerns about both the veracity of such reconstructions and
Ilaria Tabone +3 more
doaj +2 more sources
Ice-stream response to ocean tides and the form of the basal sliding law [PDF]
The Cryosphere, 2011 The response of ice streams to ocean tides is investigated. Numerical modelling experiments are conducted using a two-dimensional flow-line model of coupled ice-stream and ice-shelf flow.
G. H. Gudmundsson
doaj +3 more sources
Shear margins in upper half of Northeast Greenland Ice Stream were established two millennia ago [PDF]
Nature CommunicationsOnly a few localised ice streams drain most of the ice from the Greenland Ice Sheet. Thus, understanding ice stream behaviour and its temporal variability is crucially important to predict future sea-level change.
Daniela Jansen +19 more
doaj +2 more sources
Contrasts in hydrology between regions of basal deformation and sliding beneath Rutford Ice Stream, West Antarctica, mapped using radar and seismic data [PDF]
Geophysical Research Letters, 2008 Spatially coincident radar and seismic data collected two weeks apart on Rutford Ice Stream were analyzed to investigate the mechanical and hydrological characteristics of the ice‐bed interface.
T. Murray +3 more
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The BEAMISH hot water drill system and its use on the Rutford Ice Stream, Antarctica [PDF]
Annals of Glaciology, 2021 During the 2018/19 Antarctic field season, the British Antarctic Survey (BAS) Basal conditions on Rutford Ice Stream: BEd Access, Monitoring and Ice Sheet History’ (BEAMISH) project drilled three holes through the Rutford Ice Stream, West Antarctica.
Paul G. D. Anker +3 more
doaj +2 more sources