| Term: | Needle ice |
| Definition: | 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. |
| Term: | Needle ice |
| Definition: | Thin, elongated ice crystals that form perpendicular to the ground surface. |
| Term: | Needle ice |
| Definition: | Thin, elongated ice crystals that form perpendicular to the ground surface |
| Term: | Needle ice |
| Definition: | 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. |
| Term: | Needle ice |
| Definition: | 1.Same as candle ice. 2.Same as frazil. |