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    Modeling Sea Ice as a Granular Material, Including the Dilatancy Effect

    Source: Journal of Physical Oceanography:;1997:;Volume( 027 ):;issue: 011::page 2342
    Author:
    Tremblay, L-B.
    ,
    Mysak, L. A.
    DOI: 10.1175/1520-0485(1997)027<2342:MSIAAG>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: A dynamic sea ice model based on granular material rheology is presented. The sea ice model is coupled to both a mixed layer ocean model and a one-layer thermodynamic atmospheric model, which allows for an ice albedo feedback. Land is represented by a 6-m thick layer with a constant base temperature. A 10-year integration including both thermodynamic and dynamic effects and incorporating prescribed climatological wind stress and ocean current data was performed in order for the model to reach a stable periodic seasonal cycle. The commonly observed lead complexes, along which sliding and opening of adjacent ice floes occur in the Arctic sea ice cover, are well reproduced in this simulation. In particular, shear lines extending from the western Canadian Archipelago toward the central Arctic, often observed in winter satellite images, are present. The ice edge is well positioned both in winter and summer using this thermodynamically coupled ocean?ice?atmosphere model. The results also yield a sea ice circulation and thickness distribution over the Arctic, which are in good agreement with observations. The model also produces an increase in ice formation associated with the dilatation of the ice medium along sliding lines. In this model, incident energy absorbed by the ocean melts ice laterally and warms the mixed layer, causing a smaller ice retreat in the summer. This cures a problem common to many existing thermodynamic?dynamic sea ice models.
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      Modeling Sea Ice as a Granular Material, Including the Dilatancy Effect

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4165946
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    • Journal of Physical Oceanography

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    contributor authorTremblay, L-B.
    contributor authorMysak, L. A.
    date accessioned2017-06-09T14:52:46Z
    date available2017-06-09T14:52:46Z
    date copyright1997/11/01
    date issued1997
    identifier issn0022-3670
    identifier otherams-28791.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4165946
    description abstractA dynamic sea ice model based on granular material rheology is presented. The sea ice model is coupled to both a mixed layer ocean model and a one-layer thermodynamic atmospheric model, which allows for an ice albedo feedback. Land is represented by a 6-m thick layer with a constant base temperature. A 10-year integration including both thermodynamic and dynamic effects and incorporating prescribed climatological wind stress and ocean current data was performed in order for the model to reach a stable periodic seasonal cycle. The commonly observed lead complexes, along which sliding and opening of adjacent ice floes occur in the Arctic sea ice cover, are well reproduced in this simulation. In particular, shear lines extending from the western Canadian Archipelago toward the central Arctic, often observed in winter satellite images, are present. The ice edge is well positioned both in winter and summer using this thermodynamically coupled ocean?ice?atmosphere model. The results also yield a sea ice circulation and thickness distribution over the Arctic, which are in good agreement with observations. The model also produces an increase in ice formation associated with the dilatation of the ice medium along sliding lines. In this model, incident energy absorbed by the ocean melts ice laterally and warms the mixed layer, causing a smaller ice retreat in the summer. This cures a problem common to many existing thermodynamic?dynamic sea ice models.
    publisherAmerican Meteorological Society
    titleModeling Sea Ice as a Granular Material, Including the Dilatancy Effect
    typeJournal Paper
    journal volume27
    journal issue11
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/1520-0485(1997)027<2342:MSIAAG>2.0.CO;2
    journal fristpage2342
    journal lastpage2360
    treeJournal of Physical Oceanography:;1997:;Volume( 027 ):;issue: 011
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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