Results 31 to 40 of about 544,035 (290)
Effective Rheology Across the Fragmentation Transition for Sea Ice and Ice Shelves [PDF]
Geophysical Research Letters, 2019 AbstractSea ice and ice shelves can be described by a viscoelastic rheology that is approximately linear elastic and brittle at high strain rates and viscously shear thinning at low strain rates. Brittle ice easily fractures under compressive shear and forms shear bands as the material undergoes a transition to a fragmented, granular state.
J.A. Åström, D.I. Benn
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Implementation of a brittle sea ice rheology in an Eulerian, finite-difference, C-grid modeling framework: impact on the simulated deformation of sea ice in the Arctic [PDF]
Geoscientific Model DevelopmentWe have implemented the brittle Bingham–Maxwell sea ice rheology (BBM) into SI3, the sea ice component of NEMO. After discussing the numerical aspects and requirements that are specific to the implementation of a brittle rheology in the Eulerian, finite-
L. Brodeau +3 more
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On the influence of model physics on simulations of Arctic and Antarctic sea ice [PDF]
The Cryosphere, 2011 Two hindcast (1983–2007) simulations are performed with the global, ocean-sea ice models NEMO-LIM2 and NEMO-LIM3 driven by atmospheric reanalyses and climatologies.
F. Massonnet +5 more
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Modelling the influence of marine ice on the dynamics of an idealised ice shelf
Journal of Glaciology, 2023 Understanding the dynamic behaviour of ice shelves, specifically the controls on their ability to buttress the flow of ice into the ocean, is critical for predicting future ice-sheet contributions to sea level rise.
Lisa Craw +4 more
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, 2022 Simulating sea ice drift and deformation in the Arctic Ocean is still a challenge because of the multiscale interaction of sea ice floes that compose the Arctic Sea ice cover.
Rampal, Pierre +16 more
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Short-Term Rheology of Polycrystalline Ice [PDF]
Journal of Glaciology, 1978 AbstractDeformation characteristics of polycrystalline ice and their dependence on time, temperature, and stress have been analysed on the basis of a phenomenological relation which describes creep in terms of initial elastic, delayed elastic, and permanent strain. It is shown that the effective modulus of ice observed in the laboratory or in the field
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Impact of Variable Atmospheric and Oceanic Form Drag on Simulations of Arctic Sea Ice [PDF]
, 2014 Over Arctic sea ice, pressure ridges and floe and melt pond edges all introduce discrete obstructions to the flow of air or water past the ice and are a source of form drag.
Laxon, Seymour W. +19 more
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The emplacement of an obsidian dyke through thin ice : Hrafntinnuhryggur, Krafla Iceland. [PDF]
, 2009 An eruption along a 2.5 km-long rhyolitic dyke at Krafla volcano, northern Iceland during the last glacial period formed a ridge of obsidian (Hrafntinnuhryggur).
Castro, Jonathan M., Tuffen, Hugh
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Cyclic strengthening of lake ice
Journal of Glaciology, 2021 Further to systematic experiments on the flexural strength of laboratory-grown, fresh water ice loaded cyclically, this paper describes results from new experiments of the same kind on lake ice harvested in Svalbard. The experiments were conducted at −12
Andrii Murdza +3 more
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Journal of Glaciology, 2016 Englacial temperature is a major control on ice rheology and flow. However, it is difficult to measure at the glacier to ice-sheet scale. As a result, ice-sheet models must make assumptions about englacial temperature and rheology, which affect sea level
DUSTIN M. SCHROEDER +3 more
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