{"thcode":3,"term":{"code":529,"name":"ice masses","parent":525,"scope":"Fields of ice, formed in regions of perennial frost. [USGS Circ 1048]"},"uf":[{"name":"ice fields","usewith":false},{"name":"ice patches","usewith":false},{"name":"ice sheets","usewith":false},{"name":"icebergs","usewith":false},{"name":"icecap depressions","usewith":false},{"name":"icecap domes","usewith":false},{"name":"icecaps","usewith":false},{"name":"icefalls","usewith":false}],"bt":[{"code":525,"name":"hydrographic features","parent":1,"scope":"For natural bodies of water. For constructed waterways, reservoirs, and such, use 'hydrographic structures'."},{"code":1,"name":"Categories","parent":null,"scope":null}],"nt":[{"code":447,"name":"glacier features","parent":529,"scope":"Bodies or streams of ice moving outward and downslope from an area of accumulation; areas of relatively permanent snow or ice on the top or side of a mountain or mountainous area. [USGS Feature Class Definitions <http:\/\/geonames.usgs.gov\/domestic\/feature_class.htm>]"}],"rt":[{"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.]"}]}