Needle Ice definitions

Needle Ice

A form of periglacial ground ice that consists of groups ice slivers at or immediately below the ground surface. Needle ice is about a few centimeters long.
Found on http://www.physicalgeography.net/physgeoglos/n.html

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needle ice

thin, elongated ice crystals that form perpendicular to the ground surface.
Found on https://nsidc.org/cryosphere/glossary?page=16

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