Fast ice

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fast ice[edit | edit source]

(
Also called landfast ice.) Sea ice that is immobile due to its attachment to a coast, usually extending offshore to about the 20-m isobath.

In protected bays and inlets, fast ice is smooth and level, typically reaching a thickness of between 2 and 2.5 m. Along exposed coastlines, fast ice may be greatly deformed.


In meteorological literature, often used with particular reference to the disappearance of free electrons by their attachment to neutral oxygen atoms or molecules, thus forming negative ions.

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