| Term: | Needle ice |
| Definition: |
Thin, elongated ice crystals that form perpendicular to the ground surface. NSIDCCryosphere
Thin, elongated ice crystals that form perpendicular to the ground surface IPAPermafrost Thin, elongated ice crystals that form perpendicular to the ground surface. Single crystals are rarer. The optimum ground temperature range between 0C and -5C, with a temperature gradient between 0.3 and 0.5C/cm. TrombottoGeocryology 1.Same as candle ice. 2.Same as frazil. AMSglossary 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. PhysicalGeography GCW |