Processes controlling the downstream evolution of ice rheology in glacier shear margins: case study on Rutford Ice Stream, West Antarctica [PDF]
Journal of Glaciology, 2018 Ice rheology governs how glaciers flow and respond to environmental change. The rheology of glacier ice evolves in response to a variety of mechanisms, including damage, heating, melting and the development of crystalline fabric.
BRENT M. MINCHEW +4 more
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Rheology of an Ice-Floe Field [PDF]
Annals of Glaciology, 1984 The aim of the paper is (1) to develop theory to describe sea ice as a collection of finite-sized floes and (2) to construct a rheology based on this description.Successful sea-ice models have considered the ice to be a two-dimensional continuum with a nonlinear plastic rheology, a two-dimensional yield curve being used to determine the internal ice ...
Iain Bratchie
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A new approach to inferring basal drag and ice rheology in ice streams, with applications to West Antarctic Ice Streams [PDF]
Journal of Glaciology, 2021 Drag at the bed and along the lateral margins are the primary forces resisting flow in outlet glaciers. Simultaneously inferring these parameters is challenging since basal drag and ice viscosity are coupled in the momentum balance, which governs ice ...
Meghana Ranganathan +3 more
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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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The Effect Of Rheology On Seasonal Sea-Ice Simulations [PDF]
Annals of Glaciology, 1990 On the seasonal time scales relevant to numerical investigations of climate, the rheology used in large-scale sea ice models significantly affects the ice thickness build-up and ice velocity fields. Plastic rheologies with a normal flow rule have been used to-date in seasonal dynamic thermodynamic simulations.
Bill Ip, W.D. Hibler, Greg Flato
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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
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Sea Ice Rheology Experiment (SIREx): 2. Evaluating Linear Kinematic Features in High-Resolution Sea Ice Simulations [PDF]
, 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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Comparison of sea ice kinematics at different resolutions modeled with a grid hierarchy in the Community Earth System Model (version 1.2.1) [PDF]
Geoscientific Model Development, 2021 High-resolution sea ice modeling is becoming widely available for both operational forecasts and climate studies. In traditional Eulerian grid-based models, small-scale sea ice kinematics represent the most prominent feature of high-resolution ...
S. Xu +7 more
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Variational inference of ice shelf rheology with physics-informed machine learning
Journal of Glaciology, 2023 Floating ice shelves that fringe the coast of Antarctica resist the flow of grounded ice into the ocean. One of the key factors governing the amount of flow resistance an ice shelf provides is the rigidity (related to viscosity) of the ice that ...
Bryan Riel, Brent Minchew
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Pressure drop of flowing ice slurries in industrial heat exchangers [PDF]
, 2009 Experiments were conducted to determine the characteristics of ice flows through industrial heat exchangers (a Tetra Plex (R) C6-SR and a Tetra Spiraflo (R) MTC70/W-3).
Quarini, G.L. +8 more
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