Marine ice-sheet profiles and stability under Coulomb basal conditions [PDF]
, 2015 The behavior of marine-terminating ice sheets, such as the West Antarctic ice sheet, is of interest due to the possibility of rapid grounding-line retreat and consequent catastrophic loss of ice.
Stewart, Andrew L. +2 more
core +2 more sources
Implementation of higher-order vertical finite elements in ISSM v4.13 for improved ice sheet flow modeling over paleoclimate timescales [PDF]
Geoscientific Model Development, 2018 Paleoclimate proxies are being used in conjunction with ice sheet modeling experiments to determine how the Greenland ice sheet responded to past changes, particularly during the last deglaciation.
J. K. Cuzzone +5 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
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Observing and Modeling Ice Sheet Surface Mass Balance [PDF]
Reviews of Geophysics, 2019 AbstractSurface mass balance (SMB) provides mass input to the surface of the Antarctic and Greenland Ice Sheets and therefore comprises an important control on ice sheet mass balance and resulting contribution to global sea level change. As ice sheet SMB varies highly across multiple scales of space (meters to hundreds of kilometers) and time (hourly ...
Jan T. M. Lenaerts +3 more
openaire +6 more sources
The impact of the North American glacial topography on the evolution of the Eurasian ice sheet over the last glacial cycle [PDF]
Climate of the Past, 2016 Modeling studies have shown that the continental-scale ice sheets in North America and Eurasia in the last glacial cycle had a large influence on the atmospheric circulation and thus yielded a climate distinctly different from the present.
J. Liakka, M. Löfverström, F. Colleoni
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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 +4 more
doaj +1 more source
Exposure age and ice-sheet model constraints on Pliocene East Antarctic ice sheet dynamics [PDF]
Nature Communications, 2015 AbstractThe Late Pliocene epoch is a potential analogue for future climate in a warming world. Here we reconstruct Plio-Pleistocene East Antarctic Ice Sheet (EAIS) variability using cosmogenic nuclide exposure ages and model simulations to better understand ice sheet behaviour under such warm conditions.
Yamane, Masako +6 more
openaire +2 more sources
Age estimates of isochronous reflection horizons by combining ice core, survey, and synthetic radar data. [PDF]
, 2004 Ice core records and ice-penetrating radar data contain complementary information on glacial subsurface structure and composition, providing various opportunities for interpreting past and present environmental conditions.
Eisen, Olaf +3 more
core +1 more source
Modelling landscape evolution under ice sheets [PDF]
Geomorphology, 2008 We use an ice sheet model (GLIMMER) with an erosion component to examine the evolution of landscapes under ice sheets over long time scales in hypothetical situations. GLIMMER is a fully coupled thermomechanical 3-dimensional ice sheet model with a sliding component.
Jamieson, S.S.R. +2 more
openaire +4 more sources
Journal of GlaciologyThe observed retreat of the grounding line of the present-day ice sheets and the simulated grounding-line retreat of ice sheets under changing climate conditions are often interpreted as indications of marine ice-sheet instability (MISI), driven by a ...
Olga Sergienko, Duncan John Wingham
doaj +1 more source