Results 201 to 210 of about 197,109 (229)
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Polar Geography, 1977
Abstract The article discusses climatic characteristics in the drift‐ice zone, including circulation conditions, radiation regime, temperature and pressure fields, cloud micro‐structure and the climate of the free atmosphere. The significance of climatic studies in this region is emphasized in connection with plans for resource development and ...
A. F. Treshnikov, A. V. Voskresenskiy
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Abstract The article discusses climatic characteristics in the drift‐ice zone, including circulation conditions, radiation regime, temperature and pressure fields, cloud micro‐structure and the climate of the free atmosphere. The significance of climatic studies in this region is emphasized in connection with plans for resource development and ...
A. F. Treshnikov, A. V. Voskresenskiy
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Simulation and forecasting of ice drift as a tool for autonomous under ice operations [PDF]
2020 IEEE/OES Autonomous Underwater Vehicles Symposium (AUV)(50043), 2020 This paper explores the use of model based ensemble forecasting and Gaussian process (GP) modelling of ice drift as a risk reducing and situational awareness tool for supporting under ice operations with autonomous underwater vehicles (AUVs). Ice tethered navigation buoys will be used to guide the vehicle under the ice and back to the ice-relative ...
Mo-Bjorkelund, Tore +2 more
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A model of a drifting ice cover
Journal of Applied Mathematics and Mechanics, 1994zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Ice Ages and the Drift of Continents
The Journal of Geology, 1924The theory of the "drift of continents" as proposed by the late Dr. Wegener was supposed to account readily for the Pleistocene and the Permo-Carboniferous ice ages, and this was considered one of the most important proofs of its validity. In the following paper it is shown that his theory fails completely in this respect, and it is considered that the
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A new free drift sea ice velocity dataset for improved representations of ice drift trajectories
2020<p>Previous work shows that tracking the motion of sea ice in a Lagrangian framework can be used to produce skillful seasonal forecasts of sea ice at the pan-Arctic scale (Williams et al. 2016) and at the regional scale (Brunette et al.
Charles Brunette +2 more
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Ice studies on drifting stations
Polar Geography, 1977Abstract Ice cover studies, affecting one of the basic elements of the Arctic environment, have played an important part of the research programs of the Soviet Union's North Pole drift‐ice stations. These research programs have included investigations of the heat exchange between atmosphere and ocean, predetermining the formation of ice cover with a ...
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2011
This chapter presents the material structure of sea ice from local scale to large scale. Ice floes form granular drift ice fields, for which continuum approximations are used when the scale of interest is much larger than the floe size. These fields are char- acterized by their ice type, ice compactness, floe size and shape, and ice thickness, as shown
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This chapter presents the material structure of sea ice from local scale to large scale. Ice floes form granular drift ice fields, for which continuum approximations are used when the scale of interest is much larger than the floe size. These fields are char- acterized by their ice type, ice compactness, floe size and shape, and ice thickness, as shown
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2013
In this chapter, sea ice drift is discussed in terms of statistical properties of individual Lagrangian trajectories. It is first shown that the Arctic sea ice velocity field can be objectively decomposed into a mean field and fluctuations. The mean field shows intra-annual (between winter and summer) as well as some interannual variability.
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In this chapter, sea ice drift is discussed in terms of statistical properties of individual Lagrangian trajectories. It is first shown that the Arctic sea ice velocity field can be objectively decomposed into a mean field and fluctuations. The mean field shows intra-annual (between winter and summer) as well as some interannual variability.
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The equilibrium drift of Ice Station Alpha
Journal of Geophysical Research, 1962The problem of the equilibrium (unaccelerated) drift of an ice floe (no internal resistance) is solved by a treatment similar to Shuleikin's. Curves of drift angle, drift speed, and wind factor as functions of wind speed are computed for two different sets of parameters and compared with Shuleikin's curves for one of the sets.
Richard J. Reed, William J. Campbell
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Journal of Waterway, Port, Coastal, and Ocean Engineering, 1987
The mean wave drift force on a vertical axisymmetric ice floe in regular waves is computed using available computation methods for linear wave diffraction and radiation by a floating rigid body. The computed results for a fixed vertical cylinder are shown to be in good agreement with the corresponding analytical solution.
Susan Frankenstein, Nobuhisa Kobayashi
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The mean wave drift force on a vertical axisymmetric ice floe in regular waves is computed using available computation methods for linear wave diffraction and radiation by a floating rigid body. The computed results for a fixed vertical cylinder are shown to be in good agreement with the corresponding analytical solution.
Susan Frankenstein, Nobuhisa Kobayashi
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