Ice Drift

Ice Drift


the movement of ice at sea by winds and currents.

Numerous observations of drifting ice in the Arctic Ocean have shown that the velocity of the drift depends on wind velocity and, over longer periods, on the velocity of the relatively slow but steadier surface currents. The deflecting force of the earth’s rotation causes a deviation whereby ice drifts in a direction to the right of the direction of the wind in arctic latitudes and to the left of the direction of the wind in antarctic latitudes. On the average, this deviation is close to 30°, decreasing with an increase in wind velocity and increasing when the wind is less strong. The wind coefficient (the ratio of drift velocity to wind velocity) is close to 0.02. Because of friction, ice that is drifting under the influence of the wind carries the closest surrounding water along with it. Changes in the velocity and direction of the wind may sharply (in the course of several hours) alter a previously established pattern in the ice drift. The proximity of continental shorelines, the presence of islands and shallows, and the nature of the relief of the ocean floor all have a significant influence on the direction of the drift.


Zubov, N. N. Dinamicheskaia okeanologiia. Moscow-Leningrad, 1947.
Shuleikin, V. V. “Teoriia dreifa ledianykh polei v ee sovremennom sostoianii.” In Pamiati lu. M. Shokal’skogo, part 2. Moscow-Leningrad, 1950.
Gordienko, P. A. “Dreif 1’dov v tsentral’noi chasti Severnogo Ledovitogo okeana.” In the collection Problemy Severa, issue 1. Moscow, 1958.


References in periodicals archive ?
In a large restricted basin like the Gulf of Finland, wind-driven sea ice drift has large horizontal gradients due to the vicinity of landlocked fast ice, causing sea-ice ridging in the compressive regions and opening of pack ice in the divergent regions.
The first direct evidence that marked changes to Antarctic sea ice drift have occurred over the last 20 years, in response to changing winds, has been published by researchers from NERC's British Antarctic Survey (BAS) and NASA's Jet Propulsion Laboratory (JPL), Pasadena California.
This is all part and parcel of traveling in the Arctic and Peary himself would have suffered from negative ice drift, but for it to happen so close to the Pole felt like daylight robbery.
The Global Ice Center has been collecting and monitoring global sea ice data, including ice concentration, ice thickness and ice drift, since its opening in July 2008, in order to provide unified global sea ice information to shipping companies.
The progress in simulating the above "standard output" variables and ice drift velocity has increased the interest in the deformation-related model variables like the ridge height, the fraction of deformed ice and the rate of ice compression.
as the sun touches the point where the swell runs to the brink everything flares for a moment in green like the dry flash of a lighter in an ice drift in 1927 admiral byrd observed the ray for over half an hour along the scarped floes
However, Wadhams says the difference in thickness between 1976 and 1987 does not represent a general thinning due to warmer temperatures, but instead stems from a radical change in the pattern of ice drift.
From the NASCAR[R] Raceway Challenge to the Russian Tundra Ice Drift Challenge, the game features tracks from across four continents.
In addition to wave and sea ice forecast models, the project will develop satellite observation methods for waves in ice and other ice properties in the MIZ such as ice concentration, ice types, ice thickness, ice drift and ice edge c
For every ten miles we walk a day, the ice drift will push us back two miles each night.
Firstly, oil spills Nos 3-5 were mostly in the ship channel where oil could drift almost freely under the wind and currents, whereas the simulated ice drift was based only on wind forcing.