Results 21 to 30 of about 122,661 (305)

Ice mass loss sensitivity to the Antarctic ice sheet basal thermal state

Nature Communications, 2022
This study uses ice sheet modeling experiments to show that thawing portions of the Antarctic ice sheet bed can increase century-scale mass loss, particularly in the Wilkes and Enderby Land regions of East Antarctica.
Eliza J. Dawson, Dustin M. Schroeder, Winnie Chu, Elisa Mantelli, Hélène Seroussi   +4 more
doaj   +1 more source

Simulating higher-order fabric structure in a coupled, anisotropic ice-flow model: application to Dome C

Journal of Glaciology, 2023
Ice-crystal fabric can induce mechanical anisotropy that significantly affects flow, but ice-flow models generally do not include fabric development or its effect upon flow.
David A. Lilien, Nicholas M. Rathmann, Christine S. Hvidberg, Aslak Grinsted, M. Reza Ershadi, Reinhard Drews, Dorthe Dahl-Jensen   +6 more
doaj   +1 more source

Future sea-level projections with a coupled atmosphere-ocean-ice-sheet model

Nature Communications, 2023
Most global sea level projections ignore the active role of ice-sheet-climate coupling. Including this effect, a new modeling system simulates irreversible Antarctic ice-sheet loss and accelerating sea level rise for global mean temperatures >1.8oC.
Jun-Young Park, Fabian Schloesser, Axel Timmermann, Dipayan Choudhury, June-Yi Lee, Arjun Babu Nellikkattil   +5 more
doaj   +1 more source

Sensitivity of isochrones to surface mass balance and dynamics

Journal of Glaciology, 2023
The interior of an ice sheet consists of layers of accumulated snow, which contain important information on accumulation and ice dynamics that are imprinted on layer shapes over time.
Alexios Theofilopoulos, Andreas Born
doaj   +1 more source

GRANTSISM: An Excel™ ice sheet model for use in introductory Earth science courses [PDF]

, 2018
GRANTISM (GReenland and ANTarctic Ice Sheet Model) is an educational Excel™ model introduced by Pattyn (2006). Here, GRANTISM is amended to simulate the Svalbard-Barents-Sea Ice Sheet during the Last Glacial Maximum, an analogue for the contemporary West
Gowan, Evan J., Ingólfsson, Ólafur, Jakobsson, Martin, Kirchner, Nina, Noormets, Riko, Pattyn, Frank, van Dongen, Eef   +6 more
core   +2 more sources

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

Past rates of accumulation in central West Antarctica [PDF]

, 2004
The spatial variation in ice accumulation is critical to the form and stability of ice sheets. In West Antarctica, knowledge of present ice accumulation rates is restricted to sparse measurements and interpolations across data free regions, while ...
Ackert, Antony J. Payne, Bull, Dansgaard, Fahnestock, Fortuin, Grootes, Hamilton, Hammer, Huybrechts, Lorius, Martin J. Siegert, Nereson, Petit, Philberth, Raynaud, Stone, Vaughan, Vaughan, Welch, Whillans   +20 more
core   +1 more source

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

Modeling the Antarctic ice sheet [PDF]

Annals of Glaciology, 1997
A three-dimensional (3-D), high-resolution, non-linearly viscous, non-isothermal ice-sheet model is employed to calculate the “present-day” equilibrium regime of the Antarctic ice sheet and its evolution during the last glacial cycle.
Mikhail Verbitsky, Barry Saltzman
openaire   +1 more source

Investigating the multi-millennial evolution and stability of the Greenland ice sheet using remapped surface mass balance forcing [PDF]

The Cryosphere
Surface mass balance (SMB) forcing for projections of the future evolution of the Greenland ice sheet with stand-alone modeling approaches has been commonly derived from regional climate models (RCMs) on a fixed ice sheet topography.
C. Rahlves, C. Rahlves, H. Goelzer, A. Born, P. M. Langebroek   +4 more
doaj   +1 more source