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 +4 more sources
Impact of rheology on probabilistic forecasts of sea ice trajectories: application for search and rescue operations in the Arctic [PDF]
The Cryosphere, 2018 We present a sensitivity analysis and discuss the probabilistic forecast capabilities of the novel sea ice model neXtSIM used in hindcast mode. The study pertains to the response of the model to the uncertainty on winds using probabilistic forecasts ...
M. Rabatel +4 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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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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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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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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Drivers of Pine Island Glacier speed-up between 1996 and 2016 [PDF]
The Cryosphere, 2021 Pine Island Glacier in West Antarctica is among the fastest changing glaciers worldwide. Over the last 2 decades, the glacier has lost in excess of a trillion tons of ice, or the equivalent of 3 mm of sea level rise.
J. De Rydt +3 more
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Presentation and evaluation of the Arctic sea ice forecasting system neXtSIM-F [PDF]
The Cryosphere, 2021 The neXtSIM-F (neXtSIM forecast) forecasting system consists of a stand-alone sea ice model, neXtSIM (neXt-generation Sea Ice Model), forced by the TOPAZ ocean forecast and the ECMWF atmospheric forecast, combined with daily data assimilation of sea ice ...
T. Williams +4 more
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On the nonlinear viscosity of the orthotropic bulk rheology
Journal of Glaciology, 2022 We compare different ways the bulk flow nonlinearity of glacier ice can be captured in an orthotropic rheology. Specifically, we compare the unapproximated orthotropic rheology, derived from plastic potential theory, to existing approximations that ...
Nicholas M. Rathmann, David A. Lilien
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Large-scale englacial folding and deep-ice stratigraphy within the West Antarctic Ice Sheet [PDF]
The Cryosphere, 2020 It has been hypothesized that complex englacial structures identified within the East Antarctic and Greenland ice sheets are generated by (i) water freezing to the ice sheet base and evolving under ice flow, (ii) deformation of ice of varying rheology ...
N. Ross, H. Corr, M. Siegert
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