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The Greenland-Ice-Sheet evolution over the last 24 000 years: insights from model simulations evaluated against ice-extent markers [PDF]

The Cryosphere
Continental ice sheets retain a long-term memory stored in their geometry and thermal properties. In Greenland, this creates a disequilibrium with the present climate, as the ice sheet is still adjusting to past changes that occurred over millennial ...
T. P. M. Leger, T. P. M. Leger, J. C. Ely, C. D. Clark, S. L. Bradley, R. E. Archer, J. Zhu   +6 more
doaj   +1 more source

Modelling dynamic ice-sheet boundaries and grounding line migration using the level set method

Journal of Glaciology, 2020
Computing predictions of future sea level that include well-defined uncertainty bounds requires models that are capable of robustly simulating the evolution of ice sheets and glaciers.
M. Alamgir Hossain, Sam Pimentel, John M. Stockie   +2 more
doaj   +1 more source

A steady-state model reconstruction of the patagonian ice sheet during the last glacial maximum

Quaternary Science Advances, 2023
During the Last Glacial Maximum (LGM), the Patagonian Ice Sheet (PIS) was the largest Quaternary ice mass in the Southern Hemisphere outside of Antarctica. Although the margins of the LGM ice sheet are now well established through end-moraine mapping and
Ingo W. Wolff, Neil F. Glasser, Stephan Harrison, Joanne Laura Wood, Alun Hubbard   +4 more
doaj   +1 more source

Tracer transport in an isochronal ice-sheet model

Journal of Glaciology, 2017
The full history of ice sheet and climate interactions is recorded in the vertical profiles of geochemical tracers in polar ice sheets. Numerical simulations of these archives promise great advances both in the interpretation of these reconstructions and
ANDREAS BORN
doaj   +1 more source

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, Brooke Medley, Michiel R. van den Broeke, Bert Wouters   +3 more
openaire   +6 more sources

The configuration of Northern Hemisphere ice sheets through the Quaternary

Nature Communications, 2019
How global climatic changes are translated into ice-sheet fluctuations and sea-level change is not well understood. Here the authors present a compilation of empirical data and numerical modelling results of pre-LGM Northern Hemisphere ice sheet changes ...
Christine L. Batchelor, Martin Margold, Mario Krapp, Della K. Murton, April S. Dalton, Philip L. Gibbard, Chris R. Stokes, Julian B. Murton, Andrea Manica   +8 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, Yokoyama, Yusuke, Abe-Ouchi, Ayako, Obrochta, Stephen, Saito, Fuyuki, Moriwaki, Kiichi, Matsuzaki, Hiroyuki   +6 more
openaire   +2 more sources

Ice flux evolution in fast flowing areas of the Greenland ice sheet over the 20th and 21st centuries

Journal of Glaciology, 2017
This study investigates the evolution of Greenland ice sheet flux focusing on five of the main fast flowing regions (Petermann glacier, North East Greenland Ice Stream, Kangerdlugssuaq glacier, Helheim glacier and Jakobshavn glacier) in response to 20th ...
DANIELE PEANO, FLORENCE COLLEONI, AURÉLIEN QUIQUET, SIMONA MASINA   +3 more
doaj   +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., Hulton, N.R.J., Hagdorn, M.   +2 more
openaire   +4 more sources

Basal hydrofractures near sticky patches

Journal of Glaciology, 2023
Basal crevasses are macroscopic structural discontinuities at the base of ice sheets and glaciers that arise by fracture. Motivated by observations and by the mechanics of elastic fracture, we hypothesise that spatial variations in basal stress (in the ...
Hanwen Zhang, Timothy Davis, Richard F. Katz, Laura A. Stevens, Dave A. May   +4 more
doaj   +1 more source