Results 31 to 40 of about 407 (118)

Glacial cycles and ice-sheet modelling [PDF]

Climatic Change, 1982
An attempt is made to simulate the Pleistocene glacial cycles with a numerical model of the Northern Hemisphere ice sheets. This model treats the vertically-integrated ice flow along a meridian, including computation of bedrock adjustment and temperature distribution in the ice. Basal melt water is traced and controls ice-mass discharge.
openaire   +2 more sources

Dynamically coupling full Stokes and shallow shelf approximation for marine ice sheet flow using Elmer/Ice (v8.3) [PDF]

Geoscientific Model Development, 2018
Ice flow forced by gravity is governed by the full Stokes (FS) equations, which are computationally expensive to solve due to the nonlinearity introduced by the rheology. Therefore, approximations to the FS equations are commonly used, especially when
E. C. H. van Dongen, E. C. H. van Dongen, E. C. H. van Dongen, E. C. H. van Dongen, N. Kirchner, N. Kirchner, M. B. van Gijzen, R. S. W. van de Wal, T. Zwinger, G. Cheng, G. Cheng, P. Lötstedt, P. Lötstedt, L. von Sydow, L. von Sydow   +14 more
doaj   +1 more source

initMIP-Antarctica: an ice sheet model initialization experiment of ISMIP6 [PDF]

The Cryosphere, 2019
Ice sheet numerical modeling is an important tool to estimate the dynamic contribution of the Antarctic ice sheet to sea level rise over the coming centuries.
H. Seroussi, S. Nowicki, E. Simon, A. Abe-Ouchi, T. Albrecht, J. Brondex, S. Cornford, C. Dumas, F. Gillet-Chaulet, H. Goelzer, H. Goelzer, N. R. Golledge, J. M. Gregory, R. Greve, M. J. Hoffman, A. Humbert, A. Humbert, P. Huybrechts, T. Kleiner, E. Larour, G. Leguy, W. H. Lipscomb, D. Lowry, M. Mengel, M. Morlighem, F. Pattyn, A. J. Payne, D. Pollard, S. F. Price, A. Quiquet, T. J. Reerink, T. J. Reerink, R. Reese, C. B. Rodehacke, C. B. Rodehacke, N.-J. Schlegel, A. Shepherd, S. Sun, J. Sutter, J. Sutter, J. Van Breedam, R. S. W. van de Wal, R. S. W. van de Wal, R. Winkelmann, R. Winkelmann, T. Zhang   +45 more
doaj   +1 more source

Performance analysis of high-resolution ice-sheet simulations

Journal of Glaciology, 2023
Numerical glacier and ice-sheet models compute evolving ice geometry and velocity fields using various stress-balance approximations and boundary conditions. At high spatial resolution, with horizontal mesh/grid resolutions of a few kilometers or smaller,
Ed Bueler
doaj   +1 more source

Altimetry, gravimetry, GPS and viscoelastic modeling data for the joint inversion for glacial isostatic adjustment in Antarctica (ESA STSE Project REGINA) [PDF]

Earth System Science Data, 2018
The poorly known correction for the ongoing deformation of the solid Earth caused by glacial isostatic adjustment (GIA) is a major uncertainty in determining the mass balance of the Antarctic ice sheet from measurements of satellite gravimetry and to ...
I. Sasgen, A. Martín-Español, A. Horvath, V. Klemann, E. J. Petrie, B. Wouters, M. Horwath, R. Pail, J. L. Bamber, P. J. Clarke, H. Konrad, H. Konrad, T. Wilson, M. R. Drinkwater   +13 more
doaj   +1 more source

The impact of spatially varying ice sheet basal conditions on sliding at glacial time scales

Journal of Glaciology, 2023
Spatially variable basal conditions are thought to govern how ice sheets behave at glacial time scales (>1000 years) and responsible for changes in dynamics between the core and peripheral regions of the Laurentide and Fennoscandian ice sheets.
Evan J. Gowan, Sebastian Hinck, Lu Niu, Caroline Clason, Gerrit Lohmann   +4 more
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Global ice sheet modeling [PDF]

, 1994
The University of Maine conducted this study for Pacific Northwest Laboratory (PNL) as part of a global climate modeling task for site characterization of the potential nuclear waste respository site at Yucca Mountain, NV. The purpose of the study was to develop a global ice sheet dynamics model that will forecast the three-dimensional configuration of
Hughes, T.J., Fastook, J.L.
openaire   +2 more sources

The Mathematical Model of Ice Sheets and the Calculation of the Evolution of the Greenland Ice Sheet [PDF]

Journal of Glaciology, 1985
Abstract An evolutionary mathematical model of ice sheets is presented. The model takes into account the basic climatic and geophysical parameters, with temperature parameterization. Some numerical data derived from experiments on the Greenland ice sheet are received.
S.S Grigoryan, S.A Buyanov, M.S Krass, P.A Shumskiy   +3 more
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Performance portable ice-sheet modeling with MALI

The International Journal of High Performance Computing Applications, 2023
High-resolution simulations of polar ice sheets play a crucial role in the ongoing effort to develop more accurate and reliable Earth system models for probabilistic sea-level projections. These simulations often require a massive amount of memory and computation from large supercomputing clusters to provide sufficient accuracy and resolution ...
Jerry Watkins, Max Carlson, Kyle Shan, Irina Tezaur, Mauro Perego, Luca Bertagna, Carolyn Kao, Matthew J. Hoffman 0004, Stephen F. Price   +8 more
openaire   +4 more sources

Projections of Future Sea Level Contributions from the Greenland and Antarctic Ice Sheets: Challenges Beyond Dynamical Ice Sheet Modeling

Oceanography, 2018
As Earth’s climate warms, rising sea levels are becoming a great concern. Providing substantiated and well-informed guidance on the amount and rate of future sea level rise is important, but remains challenging.
Sophie Nowicki, Helene Seroussi
doaj   +1 more source