Results 51 to 60 of about 7,703 (211)

Comparing a thermo-mechanical Weichselian Ice Sheet reconstruction to reconstructions based on the sea level equation: aspects of ice configurations and glacial isostatic adjustment [PDF]

Solid Earth, 2014
In this study we compare a recent reconstruction of the Weichselian Ice Sheet as simulated by the University of Maine ice sheet model (UMISM) to two reconstructions commonly used in glacial isostatic adjustment (GIA) modelling: ICE-5G and ANU (Australian
P. Schmidt, B. Lund, J-O. Näslund, J. Fastook   +3 more
doaj   +1 more source

Hysteresis of the Antarctic Ice Sheet With a Coupled Climate‐Ice‐Sheet Model

Geophysical Research Letters
AbstractThe stability of the Antarctic ice sheet under different fixed levels and orbital configurations is explored using a coupled climate‐ice sheet model, starting from either a pre‐industrial ice sheet or an ice‐free, isostatically rebounded geometry.
Gaëlle Leloup, Aurélien Quiquet, Didier Roche, Christophe Dumas, Didier Paillard   +4 more
openaire   +5 more sources

The potential of marine ice cliff instability for Amundsen Sea glaciers revisited

Annals of Glaciology
Marine ice cliff instability (MICI) is the hypothesis that self-sustained retreat of ice sheets can be initiated when sufficiently tall ice cliffs are exposed.
Sainan Sun, Gudmundur Hilmar Gudmundsson
doaj   +1 more source

Modelling the diversion of erratic boulders by the Valais Glacier during the last glacial maximum

Journal of Glaciology, 2017
In this study, a modelling approach was used to investigate the cause of the diversion of erratic boulders from Mont Blanc and southern Valais by the Valais Glacier to the Solothurn lobe during the Last Glacial Maximum (LGM). Using the Parallel Ice Sheet
GUILLAUME JOUVET, JULIEN SEGUINOT, SUSAN IVY-OCHS, MARTIN FUNK   +3 more
doaj   +1 more source

Community heat flow recommendations: suitable basal boundary conditions for Greenland and Antarctica in ISMIP7

GEUS Bulletin
Geothermal heat flow (GHF) influences ice sheet thermal conditions, affecting ice flow by sliding and deformation. However, GHF distribution under polar ice sheets remains poorly constrained, with few direct borehole-derived estimates and large ...
Mareen Lösing, William Colgan, Tobias Stål, Jörg Ebbing, Anne G. Busck, Tong Zhang, Hélène Seroussi, Felicity S. McCormack, Dominik Fahrner, Leigh Stearns, Synne H. Svendsen, Anya Reading   +11 more
doaj   +1 more source

Thermomechanical polythermal ice-sheet model

, 2006
thesis
openaire   +4 more sources

Simulating the Holocene evolution of Ryder Glacier, North Greenland [PDF]

The Cryosphere
The Greenland Ice Sheet's negative mass balance is driven by a sensitivity to a warming atmosphere and ocean. The fidelity of ice-sheet models in accounting for ice–ocean interaction is inherently uncertain and often constrained against recent ...
J. Barnett, J. Barnett, F. A. Holmes, F. A. Holmes, J. Cuzzone, H. Åkesson, M. Morlighem, M. O'Regan, M. O'Regan, J. Nilsson, J. Nilsson, N. Kirchner, N. Kirchner, N. Kirchner, M. Jakobsson, M. Jakobsson   +15 more
doaj   +1 more source

Evolution of the large-scale atmospheric circulation in response to changing ice sheets over the last glacial cycle [PDF]

Climate of the Past, 2014
We present modelling results of the atmospheric circulation at the cold periods of marine isotope stage 5b (MIS 5b), MIS 4 and the Last Glacial Maximum (LGM), as well as the interglacial.
M. Löfverström, R. Caballero, J. Nilsson, J. Kleman   +3 more
doaj   +1 more source

A technique for generating consistent ice sheet initial conditions for coupled ice sheet/climate models [PDF]

Geoscientific Model Development, 2013
Abstract. A transient technique for generating ice sheet preindustrial initial conditions for long-term coupled ice sheet/climate model simulations is developed and demonstrated over the Greenland ice sheet using the Community Earth System Model (CESM).
J. G. Fyke, W. J. Sacks, W. H. Lipscomb
openaire   +3 more sources

A facet-based numerical model to retrieve ice sheet topography from Sentinel-3 altimetry [PDF]

The Cryosphere
In this study, we present a facet-based numerical model dedicated to ice sheet radar altimetry. The model simulates Sentinel-3 UnFocused-Synthetic Aperture Radar (UF-SAR) waveforms by calculating the backscattered radar signal over the 10 m facets of the
J. Aublanc, F. Boy, F. Borde, P. Féménias   +3 more
doaj   +1 more source