frazil ice

There are several ways to control frazil ice build up.

Frazil ice is the first stage in the formation of sea ice.

Frazil ice formation may also be started by snowfall, rather than supercooling.

Man-made structures are often the objects to which frazil ice adheres.

Since frazil ice is found below the surface of water, it is difficult to detect its formation.

The accumulation of frazil ice often causes flooding or damage to objects such as trash racks.

Usually what happens is the frazil ice accumulates on the upstream side of objects and sticks to them.

The frazil ice accumulates as more gets deposited.

David Deck for the design of a frazil ice control structure to mitigate recurrent flooding.

Back flushing is another technology that uses the idea of cancelling out the differential pressure caused by the frazil ice accumulation.

Close spacing keeps out more small floating debris or fish, but may plug up easily with frazil ice in cold climates.

Frazil ice is a collection of loose, randomly oriented needle-shaped ice crystals in water.

Frazil ice forms in supercooled water which occurs because the surface water loses heat to cooler air above.

The growth will extend upstream and increase in width until the point where the frazil ice accumulations bridge together and block the water.

Although still in the experimental stages, blasting with dynamite is one form of vibrational control that will break loose any frazil ice accumulation.

The first ice that forms in a polynya are loose ice crystals called frazil ice.

In windier regions, as in the Southern Ocean, frazil ice accumulation may occur along the downwind side of leads.

The uppermost layer of the ocean is supercooled to slightly below the freezing point, at which time tiny ice platelets (frazil ice) form.

As water cools, it releases heat that turns into frazil ice" that can cluster together into a pan-shaped formation.

Grease ice is the second stage in the formation of solid sea ice after ice floes and then frazil ice.

Redirecting this water to potential frazil ice accumulation regions could raise the water temperature 0.1-0.2 C, often enough to prevent supercooled water from developing.

The ice cover is composed of juxtaposed frazil ice pans and break-away border ice pieces that consolidate in the river flow direction.

If the level of turbulence is sufficient, the frazil ice will be mixed down into the upper layer and form a surface layer of grease ice.

The supercooled water will already be encouraging the formation of small ice crystals (frazil ice) and the crystals get taken to the bottom of the water body.

Frazil ice has also been demonstrated to form beneath temperate (or "warm-based") glaciers as water flows quickly uphill and supercools due to a rapid loss of pressure.