Results 261 to 270 of about 5,134,596 (298)

Modeling ice dynamics of coastal seas

Journal of Geophysical Research: Oceans, 1988
A coupled sea ice, barotropic ocean model with a 1‐km resolution and a seaward domain of 200 km quantifies three coastal processes: coupling of ice motion to wind‐driven coastal currents, ice thickness redistribution under compaction at the coast, and formation of coastal shear zones.
James E. Overland, Carol H. Pease
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Sea Ice Dynamics Models

2001
Four sea ice dynamics models (elastic-plastic, viscous-plastic, elastic-viscousplastic, and anisotropic elastic-plastic) are reviewed, with the goal of introducing common terminology and notation. Thickness distribution is used to describe ice conditions, which are also approximated by a two-layer model and generalized by an oriented thickness ...
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Arctic Coastal Sea Ice Dynamics

Offshore Technology Conference, 1974
Abstract In the period March through August, 1973, sea ice movement was observed off Barrow, Alaska, on the Chuck chi Sea coast with a land based radar. It is concluded that during the breakup period, July and early August, the ice movement is predominantly determined by ocean currents parallel to the coast and that
J.C. Rogers, W.H. Sackinger, R.D. Nelson
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Modeling Sea-Ice Dynamics

1985
Publisher Summary This chapter discusses various aspects of the modeling of sea-ice dynamics. Large areas of polar oceans are covered with a thin, variably thick layer of ice formed mainly from freezing seawater and accumulated snowfall. The understanding of the dynamic characteristics of the ice cover is important for understanding air–sea ...
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Investigations of Sea Ice Dynamics in the Baltic Sea

2001
The Baltic Sea is a semi-enclosed basin in the seasonal sea ice zone. This ice dynamics problem offers its own particular regime of spatial scales below the large polar seas: the horizontal size of the basins is 100–300 km, the thickness of undeformed ice is up to 1 m, and ice ridges are typically 5–15 m thick.
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A Model for Waves-in-Ice and Sea Ice Dynamics in the Marginal Ice Zone

OTC Arctic Technology Conference, 2011
Abstract Waves can drastically transform the properties and behavior of the ice cover in a very short time. Consequently, they potentially represent a severe threat for personnel and make offshore operations challenging (for example during platform evacuation) if not anticipated.
D. Dumont, L. Bertino, S. Sandven, A.L. Kohout   +3 more
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A finite-element treatment of sea ice dynamics for different ice rheologies

International Journal for Numerical and Analytical Methods in Geomechanics, 1998
Summary: The effects of four different rheologies on the evolution of a large-scale sea ice pack are determined and compared. Two rheologies are of viscous-plastic form, and two are viscous fluid relations. The initial pack domain is rectangular, and the motion is driven by wind stress and resisted by ocean drag.
Schulkes, R. M.S.M., Morland, L. W., Staroszczyk, R.   +2 more
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A material coordinate treatment of the sea–ice dynamics equations

Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 1998
A finite element algorithm is constructed for a material coordinate formulation of the equations of sea-ice dynamics, using quadratic elements and fully implicit time steps. The material coordinate description allows the nodes of a fixed finite element mesh to define the same material elements as time proceeds, which avoids interpolation of nodal ...
Morland, L. W., Staroszczyk, R.
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A Dynamic Thermodynamic Sea Ice Model

Journal of Physical Oceanography, 1979
Abstract A numerical model for the simulation of sea ice circulation and thickness over a seasonal cycle is presented. This model is used to investigate the effects of ice dynamics on Arctic ice thickness and air-sea heat flux characteristics by carrying out several numerical simulations over the entire Arctic Ocean region.
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Remote sensing of ice dynamics in the Beaufort Sea

Arctic summer sea ice extent has undergone dramatic declines over the past several decades, particularly in the Beaufort Sea. The comprehension of the sea ice decline requires an understanding of the annual sea ice retreat during the summer melt season.
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