Results 21 to 30 of about 1,037,031 (170)

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, H. Corr, A. Forieri, A. M. Smith   +3 more
doaj   +3 more sources

Ice sheet extent and early deglacial history of the southwestern sector of the Greenland ice sheet [PDF]

, 2009
The offshore and coastal geomorphology of southwest Greenland records evidence for the advance and decay of the Greenland Ice Sheet during the Last Glacial Maximum.
Xu, S., Davies, Bethan J., Schnabel, C., Xu, Sheng, Sheng, X., Simpson, M.J.R., Simpson., M.J.R, Huybrechts, P., Roberts, David H., Long, A.J., Huybrechts, Philipe, Long, Antony J., Davies, B., Simpson, Matthew J.R., Schnabel, Christoph, Roberts, D.H., Davies, B.J.   +16 more
core   +6 more sources

Sensitivity of Heinrich-type ice-sheet surge characteristics to boundary forcing perturbations [PDF]

Climate of the Past, 2023
Heinrich-type ice-sheet surges are one of the prominent signals of glacial climate variability. They are characterised as abrupt, quasi-periodic episodes of ice-sheet instabilities during which large numbers of icebergs are released from the Laurentide ...
C. Schannwell, U. Mikolajewicz, F. Ziemen, M.-L. Kapsch   +3 more
doaj   +1 more source

The role of subtemperate slip in thermally driven ice stream margin migration [PDF]

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, M. Haseloff, M. Haseloff, C. Schoof, O. Gagliardini   +4 more
doaj   +1 more source

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, Knut Christianson, Robert W. Jacobel, Howard Conway, Rickard Pettersson   +4 more
doaj   +1 more source

PISM simulations of idealized shear-margin vs. ice-stream melt

, 2022
PISM model output, runs scripts and plotting scripts. The idealized simulations investigate the influence of basal melting in two different ice-shelf regions on the time-dependent response of an isothermal, inherently buttressed ice-sheet-shelf system ...
Feldmann, Johannes
core   +1 more source

Ice-stream demise dynamically conditioned by trough shape and bed strength. [PDF]

Sci Adv, 2019
Ice sheet mass loss is currently dominated by fast-flowing glaciers (ice streams) terminating in the ocean as ice shelves and resting on beds below sea level.
Bradwell T, Small D, Fabel D, Smedley RK, Clark CD, Saher MH, Callard SL, Chiverrell RC, Dove D, Moreton SG, Roberts DH, Duller GAT, Ó Cofaigh C.   +12 more
europepmc   +2 more sources

Airborne radar evidence for tributary flow switching in Institute Ice Stream, West Antarctica: implications for ice sheet configuration and dynamics [PDF]

, 2015
Despite the importance of ice streaming to the evaluation of West Antarctic Ice Sheet (WAIS) stability we know little about mid- to long-term dynamic changes within the Institute Ice Stream (IIS) catchment.
Martin J. Siegert, Hugh F. J. Corr, Corr, Hugh, Bingham, RG, Woodward, John, Ross, Neil, Ross, N, Dunning, SA, Corr, Hugh F.J., Winter, K, Siegert, MJ, Robert G. Bingham, Winter, Kate, Dunning, Stuart, John Woodward, Neil Ross, Siegert, Martin, Corr, HFJ, Kate Winter, Dunning, Stuart A., Siegert, Martin J., Stuart A. Dunning, Bingham, Robert G., Woodward, J   +23 more
core   +1 more source

Deformation in Rutford Ice Stream, West Antarctica: measuring shear-wave anisotropy from icequakes [PDF]

, 2013
Ice streams provide major drainage pathways for the Antarctic ice sheet. The stress distribution and style of flow in such ice streams produce elastic and rheological anisotropy, which informs ice-flow modelling as to how ice masses respond to external
Baird, A.F., Smith, A.M., Baird, A F, Stuart, G.W., Harland, S. R., Stuart, G. W., Kendall, J-M, Pritchard, H.D., Harland, S.R., Smith, A. M., Pritchard, H. D., Kendall, J.-M., Brisbourne, A.M., Brisbourne, A. M., Lloyd, G.E., Lloyd, G. E.   +15 more
core   +1 more source

Potential subglacial lake locations and meltwater drainage pathways beneath the Antarctic and Greenland ice sheets [PDF]

, 2013
We use the Shreve hydraulic potential equation as a simplified approach to investigate potential subglacial lake locations and meltwater drainage pathways beneath the Antarctic and Greenland ice sheets. We validate the method by demonstrating its ability
Clark, Chris, Woodward, J., Livingstone, Stephen, Woodward, John, Clark, C.D., Kingslake, J., Livingstone, S.J., Livingstone, S. J., Clark, C. D., J. Kingslake, Kingslake, Jonathan, C. D. Clark, S. J. Livingstone, J. Woodward   +13 more
core   +2 more sources