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
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Le Journal de Physique Colloques, 1985 A new method for calculating the stress field in bounded ice shelves is used to compare strain rate and deviatoric stress on the Ross Ice Shelf, Antarctica. The analysis shows that strain rate (per second) increases as the third power of deviatoric stress (in newtons per square meter), with a constant of proportionality equal to 2.3 x 10
Jezek, K., Alley, R., Thomas, R.
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Rheology of planetary ices [PDF]
, 1996 The brittle and ductile rheology of ices of water, ammonia, methane, and other volatiles, in combination with rock particles and each other, have a primary influence of the evolution and ongoing tectonics of icy moons of the outer solar system. Laboratory experiments help constrain the rheology of solar system ices. Standard experimental techniques can
Durham, W.B., Kirby, S.H., Stern, L.A.
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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
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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
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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
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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
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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
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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
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Volcano-ice interactions at Prestahnukur, Iceland : rhyolite eruption during the last interglacial-glacial transition. [PDF]
, 2006 Prestahnukur is a 570m high rhyolite glaciovolcanic edifice in Iceland's Western Rift Zone with a volume of 0.6 km3. Uniform whole rock, mineral and glass compositions suggest that Prestahnukur was constructed during the eruption of one magma batch.
Tindle, A.G. +21 more
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