Results 31 to 40 of about 3,442,527 (297)

The Impact of Basal Roughness on Inland Thwaites Glacier Sliding

Geophysical Research Letters, 2022
Swath radar technology enables three‐dimensional mapping of modern glacier beds over large areas at resolutions that are higher than those typically used in ice‐flow models.
Andrew O. Hoffman, Knut Christianson, Nicholas Holschuh, Elizabeth Case, Jonathan Kingslake, Robert Arthern   +5 more
doaj   +1 more source

A Thermohydrodynamic Model of an Ice Sheet [PDF]

Journal of Glaciology, 1980
Abstract The purpose of this paper is to consider an ice-sheet model based on joint solution to the dynamic equations and equations of heat conductivity in which the surface relief is one of the unknown functions. The proposed model is applicable to calculations of the Antarctic ice sheet. Results of a numerical experiment for present
M. Ya. Verbitsky, D. V. Chalikov
openaire   +1 more source

Range of 21st century ice mass changes in the Filchner-Ronne region of Antarctica

Journal of Glaciology, 2023
Increases in ocean temperatures in the Filchner Ronne region of Antarctica are likely to result in increased ice mass loss and sea level rise. We constrain projections of the 21st century sea level contribution of this region using process-based ice ...
Andrew Johnson, Andy Aschwanden, Torsten Albrecht, Regine Hock   +3 more
doaj   +1 more source

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

A stochastic parameterization of ice sheet surface mass balance for the Stochastic Ice-Sheet and Sea-Level System Model (StISSM v1.0) [PDF]

Geoscientific Model Development
Many scientific and societal questions that draw on ice sheet modeling necessitate sampling a wide range of potential climatic changes and realizations of internal climate variability.
L. Ultee, L. Ultee, A. A. Robel, S. Castruccio   +3 more
doaj   +1 more source

Evidence for the stability of the West Antarctic Ice Sheet divide for 1.4 million years [PDF]

, 2016
Past fluctuations of the West Antarctic Ice Sheet (WAIS) are of fundamental interest because of the possibility of WAIS collapse in the future and a consequent rise in global sea level.
Sugden, David, Stuart, Finlay, Freeman, Stewart, Freeman, Stewart P.H.T., Woodward, John, Marrero, Shasta, Steig, Eric J., Stuart, Finlay M., Westoby, M. J., Westoby, Matt, Sugden, David E., Marrero, Shasta M., Freeman, Stewart P. H. T., Dunning, Stuart, Winter, Kate, Hein, Andrew, Westoby, Matthew J., Hein, Andrew S., Dunning, Stuart A., Steig, Eric, Steig, Eric.J., Hein, Andrew; id_orcid   +21 more
core   +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

Simulating Marine Isotope Stage 7 with a coupled climate–ice sheet model [PDF]

Climate of the Past, 2020
It is widely accepted that orbital variations are responsible for the generation of glacial cycles during the late Pleistocene. However, the relative contributions of the orbital forcing compared to CO2 variations and other feedback mechanisms causing ...
D. Choudhury, D. Choudhury, A. Timmermann, A. Timmermann, F. Schloesser, M. Heinemann, D. Pollard   +6 more
doaj   +1 more source

Emergence of the Shackleton Range from beneath the Antarctic Ice Sheet due to glacial erosion [PDF]

, 2014
This paper explores the long-term evolution of a subglacial fjord landscape in the Shackleton Range, Antarctica. We propose that prolonged ice-sheet erosion across a passive continental margin caused troughs to deepen and lower the surrounding ice-sheet ...
Kerr, A. R., Hein, AS, Sugden, David, Stuart, F. M., Hein, A. S.; id_orcid, Sugden, DE, Fogwill, C. J., Kubik, PW, Kubik, P. W., Stuart, FM, Fogwill, CJ ; https://orcid.org/, Kerr, AR   +11 more
core   +1 more source

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