{"thcode":3,"term":{"code":1056,"name":"snow regions","parent":112,"scope":"(a) Broad expanses of terrain covered with snow, relatively smooth and uniform in appearance, occurring usually at high latitudes or in mountainous regions above the snowline, and persisting throughout the year. (b) Regions of permanent snow cover, as at the heads of glaciers. [Glossary of Geology, 4th ed.]"},"uf":[{"name":"snowfields","usewith":false}],"bt":[{"code":112,"name":"biogeographic regions","parent":928,"scope":"Geographic regions characterized chiefly by the dominant forms of plant life and the prevailing climate. [Adapted from American Heritage Dic. of the English Language, 4th ed.]"},{"code":928,"name":"regions","parent":1,"scope":"(a) Large, indefinite portions of the earth's surface. (b) Specified districts or territories. (c) Areas of interest or activity; spheres. (d) Ecology. Parts of the earth characterized by distinctive animal or plant life. [Adapted from American Heritage Dic. of the English Language, 4th ed.]"},{"code":1,"name":"Categories","parent":null,"scope":null}],"nt":[],"rt":[{"code":529,"name":"ice masses","parent":525,"scope":"Fields of ice, formed in regions of perennial frost. [USGS Circ 1048]"}]}