- Blackfoot Glacier
Infobox_Glacier | glacier_name = Blackfoot Glacier
caption = Blackfoot Glacier at left was once joined to Jackson Glacier on the right
type = Mountain glacier
location =Montana , U.S.
coordinates = coord|48|35|34|N|113|40|07|W|type:glacier
area = 430 acres (1.74 km²)
length = 1 mile (1.6 km)
thickness =
terminus = Moraine
status = RetreatingBlackfoot Glacier is the largest of the remaining 27 glaciers in Glacier National Park and is located to the north of Blackfoot Mountain. [cite web| title =Blackfoot Glacier, USGS Mount Jackson (MT) Topo Map| work =| publisher =TopoQuest| date =| url =http://www.topoquest.com/map.php?lat=48.59273&lon=-113.66872&datum=nad83&zoom=4| format =Map| accessdate = 2008-05-15] The glacier was most recently measured in 1993 at 430 acres (1.74 km²), yet when first documented in 1850, the glacier also included the now separate
Jackson Glacier and together, they covered 1,875 acres (7.59 km².) Blackfoot Glacier is retreating rapidly, as are all of the glaciers in the park. In 1850, there were an estimated 150 glaciers in the park. Glaciologists have stated that by the year 2030, all the glaciers in the park may diisappear. [cite journal| last =Myrna| first =H.| authorlink =| coauthors =P. Hall, Daniel B. Fagre| title =Modeled Climate-Induced Glacier Change in Glacier National Park, 1850-2100| journal =Bioscience| volume =52| issue =2| pages =131–140| month =February | year =2003| url =http://www.nrmsc.usgs.gov/products/GCC/Bioscience_Hall_03.pdf| format =pdf| doi =| id =| accessdate = 2008-01-19] Jackson and Blackfoot glaciers have been selected for monitoring by theU.S. Geological Survey 's Glacier Monitoring Research program, which is researching changes to themass balance of glaciers in and surrounding Glacier National Park. The glacier is being monitored using remote sensing equipment andrepeat photography , where images of the glacier are taken from identical locations periodically. [cite web| last = | year = 2007| url = http://www.nrmsc.usgs.gov/research/Secondary_Network.htm| title = Monitoring and Assessing Glacier Changes and Their Associated Hydrologic and Ecologic Effects in Glacier National Park | publisher = U.S. Geological Survey, Northern Rocky Mountain Science Center| accessdate = 2008-01-19]ee also
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List of glaciers Cited references
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