Drift ice, also called brash ice, is sea ice that is not attached to the shoreline or any other fixed object (shoals, grounded icebergs, etc.). [1][2][3] Unlike fast ice, which is "fastened" to a fixed object, drift ice is carried along by winds and sea currents, hence its name.

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May 12, 2018 · Drift ice refers to the pieces of ice which are detached hence they are moved by winds and ocean currents. Drift ice differs from the fast ice in that, fast ice is either attached to the shorelines or objects such as the grounded icebergs and shoals.

May 25, 2018 · The drift of sea ice is forced by winds and ocean currents. The drift ice medium is described by ice state, a set of material properties, and rheology. Three drift regimes are distinguished: stationary ice (no motion), free drift (no internal friction), and plastic drift.

Alternatively and unlike fast ice, drift ice occurs further offshore in very wide areas and encompasses ice that is free to move with currents and winds. The physical boundary between fast ice and drift ice is the fast ice boundary. The drift ice zone may be further divided into a shear zone, a marginal ice zone and a central pack. [4]

The main reason for sea ice to drift is the wind. In the Arctic, there is a permanent anticyclone. This anticyclone generates prevailing winds that control the three main “currents” of the drift ice in this region. However, because the Earth rotates, the ice does not follow the exact direction of the wind: the direction in which the ice ...

Dec 2, 2014 · The difference between drift ice, pack ice and fjord ice and some Spitsbergen-specific background about all this ice.

Gridded sea-ice drift vector fields obtained from satellite image processing. It is a low resolution product (62. resolution). Ice motion vectors with a time span of 48 hours are estimated by an advanced cross-correlation method (the Continuous MCC, CMCC).

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