Results 81 to 90 of about 917,323 (294)

Impacts of Ice-Shelf Melting on Water-Mass Transformation in the Southern Ocean from E3SM Simulations

Journal of Climate, 2020
The Southern Ocean overturning circulation is driven by winds, heat fluxes, and freshwater sources. Among these sources of freshwater, Antarctic sea ice formation and melting play the dominant role.
Hyein Jeong, X. Asay-Davis, A. Turner, Darin Comeau, S. Price, R. Abernathey, M. Veneziani, M. Petersen, M. Hoffman, M. Mazloff, T. Ringler   +10 more
semanticscholar   +1 more source

Representation of sharp rifts and faults mechanics in modeling ice shelf flow dynamics: Application to Brunt/Stancomb-Wills Ice Shelf, Antarctica [PDF]

, 2014
Ice shelves play a major role in buttressing ice sheet flow into the ocean, hence the importance of accurate numerical modeling of their stress regime. Commonly used ice flow models assume a continuous medium and are therefore complicated by the presence
Borstad, C. P., Khazendar, A., Larour, E., Morlighem, M., Rignot, E., Seroussi, H.   +5 more
core   +1 more source

Dynamics of the Ross Ice Shelf

Eos, Transactions American Geophysical Union, 1991
The Ross Ice Shelf and the Ross Sea have been examined as part of the study of Antarctic coastal cyclones conducted at the Byrd Polar Research Center [Bromwich, 1991], using Advanced Very High Resolution Radiometer (AVHRR) data at 1.1‐km resolution. Several glaciological features appear clearly on the images (Figure 1).
Casassa, Gino, Turner, John
openaire   +3 more sources

Ice-Ocean Interaction On Ronne Ice Shelf, Antarctica [PDF]

Annals of Glaciology, 1990
A detailed glaciological study of Ronne Ice Shelf has been undertaken along a flowline extending from Rutford Ice Stream grounding line to the ice front. Measurements of velocity, surface elevation, ice thickness, surface temperature and accumulation rate have been made at a total of 28 sites; at 17 of these ice deformation rates are also known ...
Jenkins, Adrian, Doake, C. S. M.
openaire   +4 more sources

Modeling ice‐ocean interaction in ice‐shelf crevasses [PDF]

Journal of Geophysical Research: Oceans, 2014
AbstractOcean freezing within ice‐shelf basal crevasses could potentially act as a stabilizing influence on ice shelves; however, ice‐ocean interaction and ocean dynamics within these crevasses are as yet poorly understood. To this end, an idealized 2‐D model of an ice‐shelf basal crevasse has been developed using Fluidity, a finite‐element ocean model
Jordan, J.R., Holland, P.R., Jenkins, A., Piggott, M.D., Kimura, S.   +4 more
openaire   +6 more sources

Flow and retreat of the Late Quaternary Pine Island-Thwaites palaeo-ice stream, West Antarctica [PDF]

, 2010
Multibeam swath bathymetry and sub-bottom profiler data are used to establish constraints on the flow and retreat history of a major palaeo-ice stream that carried the combined discharge from the parts of the West Antarctic Ice Sheet now occupied by the ...
Alastair G. C. Graham, Alley, Anandakrishnan, Anderson, Anderson, Canals, Clark, Claus-Dieter Hillenbrand, Conway, Domack, Dowdeswell, Dowdeswell, Dowdeswell, Dowdeswell, Evans, Evans, Gerhard Kuhn, Graham, Heroy, Holt, Hubbard, Hughes, Jacobs, James A. Smith, Jeffrey Evans, Julian A. Dowdeswell, Karsten Gohl, King, Larter, Larter, Lowe, Lowe, Mosola, Nitsche, Noormets, Nygård, Ottesen, Ottesen, Payne, Pritchard, Pudsey, Rignot, Rignot, Rignot, Rignot, Rignot, Robert D. Larter, Schoof, Scott, Sharpe, Shaw, Shepherd, Shepherd, Shipp, Shipp, Smith, Stokes, Stokes, Stokes, Tara Deen, Thoma, Vaughan, Vaughan, Vaughan, Vaughan, Walker, Weertman, Wellner, Ó Cofaigh, Ó Cofaigh, Ó Cofaigh, Ó Cofaigh   +71 more
core   +1 more source

Diagnosing the sensitivity of grounding-line flux to changes in sub-ice-shelf melting [PDF]

The Cryosphere, 2020
Using a numerical ice flow model, we study changes in ice shelf buttressing and grounding-line flux due to localized ice thickness perturbations, a proxy for localized changes in sub-ice-shelf melting. From our experiments, applied to idealized (MISMIP+)
T. Zhang, S. F. Price, M. J. Hoffman, M. Perego, X. Asay-Davis   +4 more
doaj   +1 more source

The Grounding of an Ice Shelf in the Central Arctic Ocean: A Modeling Experiment [PDF]

, 2003
A numerical ice sheet model was used in a first test towards evaluating the hypothesis that, during a period of large-scale glaciation, an ice shelf emanating from the Barents/Kara Seas grounded across parts of the Lomonosov Ridge to a depth of around ...
Jakobsson, Martin, Paton, Mark, Siegert, M   +2 more
core   +1 more source

Influence of basal melting on ice surface fracture and glacier retreat: A case study at Pine Island Glacier [PDF]

Polish Polar Research
Pine Island Glacier (PIG) is one of the most dynamic ice streams in West Antarctica, with significant basal melting and ice shelf retreat profoundly influencing its behavior.
Boya Yan, Baojun Zhang, Pei Jiang, Qian Li, Yunsi Wu, Mingliang Liu   +5 more
doaj   +1 more source

Automated Extraction of Antarctic Glacier and Ice Shelf Fronts from Sentinel-1 Imagery Using Deep Learning

Remote Sensing, 2019
Sea level rise contribution from the Antarctic ice sheet is influenced by changes in glacier and ice shelf front position. Still, little is known about seasonal glacier and ice shelf front fluctuations as the manual delineation of calving fronts from ...
C. Baumhoer, A. Dietz, C. Kneisel, C. Kuenzer   +3 more
semanticscholar   +1 more source