Results 41 to 50 of about 1,312,001 (200)
GSA Bulletin, 2018 Marine terminating ice streams are a major component of contemporary ice sheets and are likely to have a fundamental influence on their future evolution and concomitant contribution to sea-level rise.
D. Small +13 more
semanticscholar +1 more source
Journal of Geophysical Research: Earth Surface, 2018 Antarctic mass balance and contribution to sea level rise are dominated by the flow of ice through narrow conduits called ice streams. These regions of relatively fast flow drain over 90% of the ice sheet and generate significant amounts of frictional ...
C. Meyer +3 more
semanticscholar +1 more source
Retreat of the Smith Sound Ice Stream in the Early Holocene
Boreas, 2019 Nares Strait, a major connection between the Arctic Ocean and Baffin Bay, was blocked by coalescent Innuitian and Greenland ice sheets during the last glaciation. This paper focuses on the events and processes leading to the opening of the strait and the
A. Jennings +4 more
semanticscholar +1 more source
Marine ice sheet instability and ice shelf buttressing of the Minch Ice Stream, northwest Scotland
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.
N. Gandy +7 more
semanticscholar +1 more source
Basal melt beneath Whillans Ice Stream and Ice Streams A and C, West Antarctica [PDF]
Annals of Glaciology, 2003 AbstractWe have used a recently derived map of the velocity of Whillans Ice Stream and Ice Streams A and C, West Antarctica, to help estimate basal melt. Ice temperature was modeled with a simple vertical advection–diffusion equation,“tuned” to match temperature profiles.
Slawek Tulaczyk +2 more
openaire +2 more sources
Modeling ice stream flow [PDF]
Eos, Transactions American Geophysical Union, 2011 Ice flow speed within an ice sheet can vary from a few meters to thousands of meters per year. Fast flowing ice streams can affect sea level, and their flow variation is one factor that determines whether an ice sheet is gaining or losing mass. But different ice streams exhibit different behaviors, and these spatial and temporal variations are not well
openaire +1 more source
Superimposition of ribbed moraines on a palaeo‐ice‐stream bed: implications for ice stream dynamics and shutdown [PDF]
Earth Surface Processes and Landforms, 2008 AbstractThe sediments and landforms preserved on palaeo‐ice‐stream beds can provide important information about their subglacial conditions and flow mechanisms, and the processes accompanying their shutdown. In this paper, detailed observations of an intriguing subglacial landform assemblage of ribbed moraines superimposed on glacial lineations on the ...
Stokes, C.R. +3 more
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The role of subtemperate slip in thermally driven ice stream margin migration
The Cryosphere, 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.
M. Haseloff, C. Schoof, O. Gagliardini
semanticscholar +1 more source
Rapid ice sheet retreat triggered by ice stream debuttressing: Evidence from the North Sea
, 2016 Using high-resolution bathymetric and shallow seismic data from the North Sea, we have mapped hitherto unknown glacial landforms that connect and resolve longstanding gaps in the Quaternary geological history of the basin. We use these data combined with
H. Sejrup, C. Clark, B. O. Hjelstuen
semanticscholar +1 more source
Reviews of Geophysics, 1977 Solar heat is the acknowledged driving force for climatic change. However, ice sheets are also capable of causing climatic change. This property of ice sheets derives from the facts that ice and rock are crystalline whereas the oceans and atmosphere are fluids and that ice sheets are massive enough to depress the earth's crust well below sea level ...
openaire +4 more sources