https://cdn.earthdata.nasa.gov/conduit/upload/5182/KeywordsCommunityGuide_Baseline_v1_SIGNED_FINAL.pdf 23.7 2026-04-15T10:53:30.610Z https://gcmd.earthdata.nasa.gov/KeywordViewer/scheme/sciencekeywords/099ab1ae-f4d2-48cc-be2f-86bd58ffc4ca GLACIERS/ICE SHEETS Date=2020-01-15 User Id=tstevens Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=GLACIERS/ICE SHEETS [099ab1ae-f4d2-48cc-be2f-86bd58ffc4ca,84281] - BASINS [b58fc6f1-2fb5-4e3a-9553-f041fe75960b,559667] Date=2020-01-15 User Id=tstevens Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=GLACIERS/ICE SHEETS [099ab1ae-f4d2-48cc-be2f-86bd58ffc4ca,84281] - COASTLINE [18d136b8-728f-438b-90cb-3c82956e1c2c,559663] Date=2020-01-15 User Id=tstevens Entity=NarrowerRelation Operation=INSERT User Note=Insert Concept System Note=add narrower relation New Value=GLACIERS/ICE SHEETS [099ab1ae-f4d2-48cc-be2f-86bd58ffc4ca,84281] - ICE SHELVES [98d5bed0-0d07-495a-9c8a-b5eedd04192f,559655] Glaciers are masses of land ice, formed by the further recrystallization of firn, flowing continuously from higher to lower elevations. Ice sheets are a continuous sheet of land ice that covers a very large area and moves outward inmany directions. This type of ice mass is so thick as to mask the land surface contours, in contrast to the smaller and thinner highland ice. The continental glacier of Greenland is sometimes called the Inland Ice. This term is often used to describe the great ice masses that characterized the ice ages. 2020-01-15 08:06:57.0