Results 11 to 20 of about 4,984 (254)
Granular effects in sea ice rheology in the marginal ice zone. [PDF]
Philos Trans A Math Phys Eng Sci, 2022 Sea ice in the marginal ice zone (MIZ) consists of relatively small floes with a wide size span. In response to oceanic and atmospheric forcing, it behaves as an approximately two-dimensional, highly polydisperse granular material. The established viscous-plastic rheologies used in continuum sea ice models are not suitable for the MIZ; the
Herman A.
europepmc +6 more sources
Dynamics of ice mass deformation: Linking processes to rheology, texture, and microstructure
Geochemistry, Geophysics, Geosystems, 2013 Prediction of glacier and polar ice sheet dynamics is a major challenge, especially in view of changing climate. The flow behavior of an ice mass is fundamentally linked to processes at the grain and subgrain scale.
Sandra Piazolo +4 more
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Ice bridges and ridges in the Maxwell-EB sea ice rheology [PDF]
The Cryosphere, 2017 This paper presents a first implementation of a new rheological model for sea ice on geophysical scales. This continuum model, called Maxwell elasto-brittle (Maxwell-EB), is based on a Maxwell constitutive law, a progressive damage mechanism that is ...
V. Dansereau +4 more
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Semi-brittle rheology and ice dynamics in DynEarthSol3D [PDF]
The Cryosphere, 2017 We present a semi-brittle rheology and explore its potential for simulating glacier and ice sheet deformation using a numerical model, DynEarthSol3D (DES), in simple, idealized experiments.
L. C. Logan +4 more
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Rheology of Commercial and Model Ice Creams
Applied Rheology, 2008 The rheologies of a shear-frozen commercial ice cream and of a model ice cream foam have been studied at − 5ºC and other temperatures by capillary rheometry on a commercial manufacturing line and in a Multi-Pass Rheometer, respectively. Both were 50 vol%
Martin P.J. +4 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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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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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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