Alpine glaciers are frozen rivers of ice, slowly flowing under their own weight down mountainsides and into valleys Ice sheets exist only on greenland and antarctica, and they spread out in broad domes in multiple directions. At higher elevations, more snow typically falls than melts, adding to its mass At lower elevations, there is usually a higher rate of melt or icebergs break off that removes ice mass Alpine glaciers are frozen rivers of ice, slowly. What is the lifecycle of a glacier, and what factors influence its lifecycle
For instance, in very dry parts of antarctica, low temperatures are ideal for glacier growth, but the small amount of net annual precipitation causes the glaciers to grow. Glacier melt delivers nutrients into lakes, rivers, and oceans Those nutrients can drive blooms of phytoplankton—the base of aquatic and marine food chains Meanwhile, gradual glacier melt sustains stream habitats for plants and animals So, glaciers often have an indirect impact on wildlife and fisheries. Glacier parameters search search by geographic cooridnates (lat/lon), altitude/size/length, data contributor, and glacier features such as primary class, form, frontal characteristic, longitudinal profile, major source of nourishment, and tongue activity
The world glacier inventory (wgi) contains information for over 130,000 glaciers Inventory parameters include geographic location, area, length, orientation, elevation, and classification The wgi is based primarily on aerial photographs and maps with most glaciers having one data entry only This data set comprises results from a hybrid glacier evolution model that uses the mass balance module of the python glacier evolution model (pygem) and the glacier dynamics module of the open global glacier model (oggm) Output parameters include projections of glacier mass change, fixed runoff, and various mass balance components at regionally aggregated and glacier scales. This data collection’s primary data product is the glims glacier database
The glacier database includes measurements of glacier geometry, glacier area, snowlines, supraglacial lakes and rock debris, and other glacial attributes, as well as browse images. Glacier a mass of ice that originates on land, usually having an area larger than one tenth of a square kilometer Many believe that a glacier must show some type of movement Others believe that a glacier can show evidence of past or present movement.
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