Results 31 to 40 of about 1,312,001 (200)
Bed topography and subglacial landforms in the onset region of the Northeast Greenland Ice Stream
Annals of Glaciology, 2020 The Northeast Greenland Ice Stream (NEGIS) is an important dynamic component for the total mass balance of the Greenland ice sheet, as it reaches up to the central divide and drains 12% of the ice sheet.
S. Franke +7 more
semanticscholar +1 more source
Journal of Geophysical Research: Earth Surface, 2020 The ice stream geometry and large ice surface velocities at the onset region of the Northeast Greenland Ice Stream (NEGIS) are not yet well reproduced by ice sheet models.
S. Franke +6 more
semanticscholar +1 more source
Subglacial hydrology and the formation of ice streams [PDF]
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2014 Antarctic ice streams are associated with pressurized subglacial meltwater but the role this water plays in the dynamics of the streams is not known. To address this, we present a model of subglacial water flow below ice sheets, and particularly below ice streams.
Andrew C. Fowler +3 more
openaire +4 more sources
Tidal controls on the flow of ice streams [PDF]
Geophysical Research Letters, 2016 AbstractThe flow of many Antarctic ice streams is known to be significantly influenced by tides. In the past, modeling studies have implemented the tidal forces acting on a coupled ice stream/ice shelf system in a number of different ways, but the consequences that this has on the modeled response of ice streams to tides have, until now, not been ...
Rosier, Sebastian H.R. +1 more
openaire +3 more sources
Journal of Glaciology, 2018 Ice rheology governs how glaciers flow and respond to environmental change. The rheology of glacier ice evolves in response to a variety of mechanisms, including damage, heating, melting and the development of crystalline fabric.
B. Minchew +4 more
semanticscholar +1 more source
Englacial Pore Water Localizes Shear in Temperate Ice Stream Margins
Journal of Geophysical Research: Earth Surface, 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.
M. Haseloff, Ian Hewitt, Richard F. Katz
semanticscholar +1 more source
The motion of ice stream margins [PDF]
Journal of Fluid Mechanics, 2013 AbstractThe recent article by Schoof (J. Fluid Mech., vol. 712, 2012, pp. 552–578) provides a technically demanding solution to the problem of determining ice-stream margin evolution. It is important in opening the way to the future theoretical description of how the ice sheets will melt and sea level will rise as the climate warms.
openaire +3 more sources
Meltwater generation in ice stream shear margins: case study in Antarctic ice streams
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2022 Liquid water within glacier ice and at the glacier beds exerts a significant control on ice flow and glacier stability through a number of processes, including altering the rheology of the ice and lubricating the bed. Some of this water is generated as melt in regions of rapid deformation, including shear margins, due to heating by viscous dissipation.
Meghana Ranganathan +3 more
openaire +2 more sources
Enhanced Firn Densification in High‐Accumulation Shear Margins of the NE Greenland Ice Stream
Journal of Geophysical Research: Earth Surface, 2019 Firn thickness across the NE Greenland Ice Stream is a function of accumulated strain, with thinner firn in the high‐strain margins of the ice stream. We present a novel technique for extracting firn density from previously collected seismic reflection ...
K. Riverman +7 more
semanticscholar +1 more source
On the pulling power of ice streams [PDF]
Journal of Glaciology, 1992 AbstractGravity wants to pull an ice sheet to the center of the Earth, but cannot because the Earth’s crust is in the way, so ice is pushed out sideways instead. Or is it? The ice sheet “sees” nothing preventing it from spreading out except air, which is much less massive than ice. Therefore, does not ice rush forward to fill this relative vacuum; does
openaire +2 more sources