A form of periglacial ground ice that consists of almost pure ice that often exists as an extensive horizontal layer. The ice layer grows because of the active migration of water from around the featu
re. These features are found just below the active layer.
Ice in discrete layers or Ice lenses, formed by Ice Segregation. It can range in thickness from hairline to more than 10 m. It commonly occurs in alternating layers of Ice and soil.
A seiche is a standing wave in an enclosed or partially enclosed body of water. Seiches and seiche-related phenomena have been observed on lakes, reservoirs, bays and seas. The key requirement for for
mation of a seiche is that the body of water be at least partially bounded, allowing natural phenomena to form a standing wave.