The role of ice stream dynamics in deglaciation [PDF]
Journal of Geophysical Research: Earth Surface, 2016 Since the mid-Pleistocene transition, deglaciation has occurred only after ice sheets have grown large while experiencing several precession and obliquity cycles, indicating that large ice sheets are more sensitive to Milankovitch forcing than small ice ...
Robel, Alexander A., Tziperman, Eli
core +6 more sources
The role of subtemperate slip in thermally driven ice stream margin migration [PDF]
, 2018 The amount of ice discharged by an ice stream depends on its width, and the widths of unconfined ice streams such as the Siple Coast ice streams in West Antarctica have been observed to evolve on decadal to centennial timescales.
Gagliardini, Olivier +2 more
core +3 more sources
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
core +2 more sources
Interaction and Variability of Ice Streams under a Triple-Valued Sliding Law and Non-Newtonian Rheology [PDF]
, 2014 Ice streams are regions of fast flowing glacier ice that transport a significant portion of the total ice flux from present ice sheets. The flow pattern of ice streams can vary both temporally and spatially. In particular, ice streams can become stagnant
Sayag, Roiy, Tziperman, Eli
core +2 more sources
Centurial‐millenial ice‐rafted debris pulses from ablating marine ice sheets [PDF]
, 2001 We use an ice‐sheet model to show that (i) margins of marine ice‐sheets can be expected to be frozen to the bed, except where ice‐streams discharge; (ii) 20–50km retreats induced by ablation rates of 2 m/yr provide sufficient debris flux through the ...
Hindmarsh, Richard C.A., Jenkins, Adrian
core +1 more source
Subglacial sediments: A regional geological template for ice flow in West Antarctica [PDF]
, 2001 We use aerogeophysical data to estimate the distribution of marine subglacial sediments and fault“bounded sedimentary basins beneath the West Antarctic Ice Sheet (WAIS).
Arko, Robert A. +6 more
core +2 more sources
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.
core +5 more sources
Significant groundwater contribution to Antarctic ice streams hydrologic budget [PDF]
, 2014 Satellite observations have revealed active hydrologic systems beneath Antarctic ice streams, but sources and sinks of water within these systems are uncertain. Here we use numerical simulations of ice streams to estimate the generation, flux, and budget
Bougamont, M +4 more
core +1 more source
Modeling the elastic transmission of tidal stresses to great distances inland in channelized ice streams [PDF]
, 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.
Simons, M., Thompson, J., Tsai, V. C.
core +3 more sources
A temperate former West Antarctic ice sheet suggested by an extensive zone of bed channels [PDF]
, 2014 Several recent studies predict that the West Antarctic Ice Sheet will become increasingly unstable under warmer conditions. Insights on such change can be assisted through investigations of the subglacial landscape, which contains imprints of former ice ...
Anne M. Le Brocq +41 more
core +1 more source