Non-normal flow rules affect fracture angles in sea ice viscous–plastic rheologies [PDF]
The Cryosphere, 2021 The standard viscous–plastic (VP) sea ice model with an elliptical yield curve and a normal flow rule has at least two issues. First, it does not simulate fracture angles below 30∘ in uni-axial compression, in contrast with observations of linear ...
D. Ringeisen +3 more
doaj +1 more source
Improving the spatial distribution of modeled Arctic sea ice thickness [PDF]
, 2005 The spatial distribution of ice thickness/draft in the Arctic Ocean is examined using a sea ice model. A comparison of model predictions with submarine observations of sea ice draft made during cruises between 1987 and 1997 reveals that the model has the
Laxon, SW +5 more
core +1 more source
The anomalous pressure drop behaviour of ice slurries flowing through constrictions [PDF]
, 2008 The effective ‘viscosity’ for ice slurry containing more than say 30 to 40% ice fraction is many orders of magnitude higher than that for water. However, this work suggests that such slurries, when flowing through constrictions, can incur lower pressure ...
Rhys, T. D. L. +3 more
core +1 more source
Tuning parameters of a sea ice model using machine learning [PDF]
Geoscientific Model DevelopmentWe developed a new method for tuning sea ice rheology parameters, which consists of two components: a new metric for characterising sea ice deformation patterns and a machine learning (ML)-based approach for tuning rheology parameters. We applied the new
A. Korosov, Y. Ying, E. Ólason
doaj +1 more source
Rheology of Ice II and Ice III from High‐Pressure Extrusion [PDF]
Geophysical Research Letters, 1986 Rheological parameters for ice II and ice III, needed in tectonic models of the icy satellites of the major planets, are obtained from extrusion experiments and compared with the rheology of ice I at pressures ∼2 kbar and temperatures ∼240K. Ice II has a higher effective viscosity (by a factor ∼10) than ice I at similar stress levels, whereas ice III ...
Echelmeyer, Keith, Kamb, Barclay
openaire +2 more sources
A unified framework for large-scale fabric evolution models and anisotropic rheologies [PDF]
The CryosphereIce is anisotropic, with its viscosity varying by an order of magnitude in different directions when ice crystals align. However, how this variation affects ice flow is not well understood.
D. H. Richards +5 more
doaj +1 more source
Landfast sea ice material properties derived from ice bridge simulations using the Maxwell elasto-brittle rheology [PDF]
The Cryosphere, 2020 The Maxwell elasto-brittle (MEB) rheology is implemented in the Eulerian finite-difference (FD) modeling framework commonly used in classical viscous-plastic (VP) models.
M. Plante +3 more
doaj +1 more source
A hybrid ice-mélange model based on particle and continuum methods [PDF]
The CryosphereIce mélange, a composite of sea ice and icebergs, can have a major influence on sea-ice–ocean interactions. However, ice mélange has not been represented in climate models because numerically efficient realizations do not exist.
S. Kahl, C. Mehlmann, D. Notz
doaj +1 more source
Arctic sea ice mass balance in a new coupled ice–ocean model using a brittle rheology framework [PDF]
The Cryosphere, 2023 Sea ice is a key component of the Earth's climate system as it modulates the energy exchanges and associated feedback processes at the air–sea interface in polar regions.
G. Boutin +7 more
doaj +1 more source
Investigation into the transportation and melting of thick ice slurries in pipes [PDF]
, 2008 This paper presents the results of experiments and modelling carried out on ice slurries flowing in uninsulated steel pipes with a nominal diameter of 50 mm. The slurries used were formed from 4.75% NaCl aqueous solution and had ice mass fractions in the
Quarini, GL +5 more
core +1 more source