2004: A continuum anisotropic model of sea ice dynamics
We develop the essential ingredients of a new, continuum and anisotropic model of sea-ice dynamics designed for eventual use in climate simulation. These ingredients are a constitutive law for sea-ice stress, relating stress to the material properties of sea ice and to internal variables describing...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.570.501 2023-05-15T18:16:08+02:00 2004: A continuum anisotropic model of sea ice dynamics Er V. Wilchinsky Daniel L. Feltham The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.501 http://www.cpom.org/people/dlf/continuumanisotropicmodel.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.501 http://www.cpom.org/people/dlf/continuumanisotropicmodel.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.cpom.org/people/dlf/continuumanisotropicmodel.pdf sea ice anisotropic plastic flawed continuum rheology text ftciteseerx 2016-01-08T12:30:22Z We develop the essential ingredients of a new, continuum and anisotropic model of sea-ice dynamics designed for eventual use in climate simulation. These ingredients are a constitutive law for sea-ice stress, relating stress to the material properties of sea ice and to internal variables describing the sea-ice state, and equations describ-ing the evolution of these variables. The sea-ice cover is treated as a densely flawed two-dimensional continuum consisting of a uniform field of thick ice that is uniformly permeated with narrow linear regions of thinner ice called leads. Lead orientation, thickness and width distributions are described by second-rank tensor internal vari-ables: the structure, thickness and width tensors, whose dynamics are governed by corresponding evolution equations accounting for processes such as new lead gen-eration and rotation as the ice cover deforms. These evolution equations contain contractions of higher-order tensor expressions that require closures. We develop a sea-ice stress constitutive law that relates sea-ice stress to the structure tensor, thick-ness tensor and strain rate. For the special case of empty leads (containing no ice), linear closures are adopted and we present calculations for simple shear, convergence and divergence. Text Sea ice Unknown |
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sea ice anisotropic plastic flawed continuum rheology |
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sea ice anisotropic plastic flawed continuum rheology Er V. Wilchinsky Daniel L. Feltham 2004: A continuum anisotropic model of sea ice dynamics |
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sea ice anisotropic plastic flawed continuum rheology |
description |
We develop the essential ingredients of a new, continuum and anisotropic model of sea-ice dynamics designed for eventual use in climate simulation. These ingredients are a constitutive law for sea-ice stress, relating stress to the material properties of sea ice and to internal variables describing the sea-ice state, and equations describ-ing the evolution of these variables. The sea-ice cover is treated as a densely flawed two-dimensional continuum consisting of a uniform field of thick ice that is uniformly permeated with narrow linear regions of thinner ice called leads. Lead orientation, thickness and width distributions are described by second-rank tensor internal vari-ables: the structure, thickness and width tensors, whose dynamics are governed by corresponding evolution equations accounting for processes such as new lead gen-eration and rotation as the ice cover deforms. These evolution equations contain contractions of higher-order tensor expressions that require closures. We develop a sea-ice stress constitutive law that relates sea-ice stress to the structure tensor, thick-ness tensor and strain rate. For the special case of empty leads (containing no ice), linear closures are adopted and we present calculations for simple shear, convergence and divergence. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Er V. Wilchinsky Daniel L. Feltham |
author_facet |
Er V. Wilchinsky Daniel L. Feltham |
author_sort |
Er V. Wilchinsky |
title |
2004: A continuum anisotropic model of sea ice dynamics |
title_short |
2004: A continuum anisotropic model of sea ice dynamics |
title_full |
2004: A continuum anisotropic model of sea ice dynamics |
title_fullStr |
2004: A continuum anisotropic model of sea ice dynamics |
title_full_unstemmed |
2004: A continuum anisotropic model of sea ice dynamics |
title_sort |
2004: a continuum anisotropic model of sea ice dynamics |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.501 http://www.cpom.org/people/dlf/continuumanisotropicmodel.pdf |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
http://www.cpom.org/people/dlf/continuumanisotropicmodel.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.570.501 http://www.cpom.org/people/dlf/continuumanisotropicmodel.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766189573856034816 |