Results 31 to 40 of about 306,492 (342)

Simulating ice-shelf extent using damage mechanics

open access: yesJournal of Glaciology, 2022
Inaccurate representations of iceberg calving from ice shelves are a large source of uncertainty in mass-loss projections from the Antarctic ice sheet. Here, we address this limitation by implementing and testing a continuum damage-mechanics model in a ...
Samuel B. Kachuck   +4 more
doaj   +1 more source

Glacial-cycle simulations of the Antarctic Ice Sheet with the Parallel Ice Sheet Model (PISM) – Part 2: Parameter ensemble analysis

open access: yes, 2020
. The Parallel Ice Sheet Model (PISM) is applied to the Antarctic Ice Sheet over the last two glacial cycles ( ≈210  000 years) with a resolution of 16  km .
T. Albrecht, R. Winkelmann, A. Levermann
semanticscholar   +1 more source

Global ice sheet modeling [PDF]

open access: yes, 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

Modeling the Antarctic ice sheet [PDF]

open access: yesAnnals 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

Tracer transport in an isochronal ice-sheet model

open access: yesJournal 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

ATAT 1.1, the Automated Timing Accordance Tool for comparing ice-sheet model output with geochronological data [PDF]

open access: yesGeoscientific Model Development, 2019
Earth's extant ice sheets are of great societal importance given their ongoing and potential future contributions to sea-level rise. Numerical models of ice sheets are designed to simulate ice-sheet behaviour in response to climate changes but to be ...
J. C. Ely   +3 more
doaj   +1 more source

Glacial cycles and ice-sheet modelling [PDF]

open access: yesClimatic 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   +3 more sources

Quantitative sub-ice and marine tracing of Antarctic sediment provenance (TASP v1.0) [PDF]

open access: yesGeoscientific Model Development
Ice sheet models should be able to accurately simulate palaeo ice sheets to have confidence in their projections of future polar ice sheet mass loss and resulting global sea level rise.
J. W. Marschalek   +6 more
doaj   +1 more source

Antarctic ice sheet response to sudden and sustained ice-shelf collapse (ABUMIP)

open access: yesJournal of Glaciology, 2020
Antarctica's ice shelves modulate the grounded ice flow, and weakening of ice shelves due to climate forcing will decrease their ‘buttressing’ effect, causing a response in the grounded ice.
Sainan Sun   +28 more
doaj   +1 more source

Glacial-cycle simulations of the Antarctic Ice Sheet with the Parallel Ice Sheet Model (PISM) – Part 1: Boundary conditions and climatic forcing

open access: yes, 2020
. Simulations of the glacial–interglacial history of the Antarctic Ice Sheet provide insights into dynamic threshold behavior and estimates of the ice sheet's contributions to global sea-level changes for the past, present and future.
T. Albrecht, R. Winkelmann, A. Levermann
semanticscholar   +1 more source

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