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Glacier Quick Facts | National Snow and Ice Data Center The largest glacier, by area, is the Seller Glacier on the Antarctic Peninsula, measuring over 7,000 square kilometers (2,700 square miles) The largest ice crystals that make up a glacier can be as large as apples However, there are many other ice masses on Earth that are much larger than the largest glacier
Glaciers - National Snow and Ice Data Center What is a glacier? A glacier is an accumulation of ice and snow that slowly flows over land At higher elevations, more snow typically falls than melts, adding to its mass Eventually, the surplus of built-up ice begins to flow downhill At lower elevations, there is usually a higher rate of melt or icebergs break off that removes ice mass
Science of Glaciers - National Snow and Ice Data Center The Taylor Glacier is an Antarctic glacier about 54 kilometers (34 miles) long, flowing from the plateau of Victoria Land into the western end of Taylor Valley — Credit: Eli Duke Flickr Valley commonly originate from mountain glaciers or icefields, these glaciers spill down valleys, looking much like giant tongues
Learn - National Snow and Ice Data Center Quick facts, basic science, and information about snow, ice, and why the cryosphere matters The cryosphere includes all of the snow and ice-covered regions across the planet
Why Glaciers Matter - National Snow and Ice Data Center 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
Ice Sheet Quick Facts - National Snow and Ice Data Center Is an ice sheet different from a glacier? Ice sheets are much larger than glaciers An ice sheet is a mass of glacial land ice, extending more than 50,000 square kilometers (20,000 square miles) Ice sheets can cover underlying canyons and mountain ranges During the last ice age, ice sheets also covered much of North America and Scandinavia
glacier - National Snow and Ice Data Center 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
Seeking the world’s largest glaciers - National Snow and Ice Data Center Antarctica’s Pine Island Glacier, which is widely thought to be the largest glacier in the world, did not make the top three from either data set This is because, according to the GLIMS definition of a glacier, Pine Island Glacier is not a true glacier at all—it is an ice stream flowing into the Amundsen Sea faster than the rest of the
Quick Facts About Ice Shelves - National Snow and Ice Data Center A glacier in Alaska calves a chunk of ice into the water — Credit: Magdalena Kula Manchee Unsplash Calving occurs when chunks of ice break off from ice shelves, glaciers, and icebergs Unique to Antarctica, giant flat icebergs, or tabular icebergs can occur The process can take a decade or longer Some are the size of small countries or US
Ice Sheets Today | National Snow and Ice Data Center Melting on the Antarctic Ice Sheet for the 2024 to 2025 season began with above average melt extents in all regions, but melt extent dropped to nearly zero or below average from February 1 to March 15 Net accumulation of snow, part of the ice sheet’s surface mass balance, was far above average