- Bolam Glacier
Infobox_Glacier | glacier_name = Bolam Glacier
type = Mountain glacier
coordinates = coord|41|25|14|N|122|12|7|W|type:glacier_region:US-CA|display=inline,title
area = 0.4 miles² (1.1 km²)
length = 1.4 miles (2.2 km)
thickness = average 70 ft (21 m)
terminus = moraine
status = expandingThe Bolam Glacier is a
glaciersituated on the northern flank of Mount Shasta, in the U.S. stateof California. [cite web| last =| first =| coauthors =| title = Existing Glaciers of Mount Shasta | publisher =College of the Siskiyous| url =http://www.siskiyous.edu/shasta/env/glacial/exi.htm| format =| accessdate = 2007-01-23 ] [cite web| last =| first =| coauthors =| title =Glaciers of California|work=Glaciers of the American West| publisher =Glaciers Online| url =http://glaciers.research.pdx.edu/california.php| format =| accessdate = 2007-01-23] It is the second longest glacier in California behind the nearby Whitney Glacier, and the fourth largest and most voluminous after the neighboring Hotlum Glacier, Whitney Glacier, and Wintun Glacier. [cite web | last = Driedger | first = Carolyn L. | coauthors = Kennard, Paul M. | url = http://pubs.er.usgs.gov/usgspubs/pp/pp1365 | title = Ice volumes on Cascade volcanoes; Mount Rainier, Mount Hood, Three Sisters, and Mount Shasta | publisher = U.S. Geological Survey Professional Paper 1365 | date=1986 | accessdate = 2007-03-06] . The Bolam Glacier flows from a cirque on the north side of Mount Shasta's main summit, with the moving ice starting below a large bergschrundwhich spans the glacier at 12,600 ft (3,840 m) Google Earthelevation for GNIS coordinates.] . Above that, permanent snow and ice extends towards the summit to about 13,500 ft (4,100 m). The glacier flows north down a steep slope and terminates near 9,800 ft (3,000 m).
In 2002, scientists made the first detailed survey of Mount Shasta's glaciers in 50 years. They found that seven of the glaciers have grown over the period 1951-2002, with the Hotlum and Wintun nearly doubling, the Bolam increasing by half, and the Whitney and Konwakiton Glaciers growing by a third. [cite book | last = Harris | first = Stephen L. | title = Fire Mountains of the West: The Cascade and Mono Lake Volcanoes (3rd ed.) | publisher =
Mountain Press Publishing Company| date = 2005 | pages = p. 109 | isbn = 0-87842-511-X ] [cite web| last =Wong| first =Kathleen| coauthors =| title=California Glaciers|work=California Wild| publisher =California Academy of Sciences| url =http://www.calacademy.org/calwild/2005fall/stories/glaciers.html| format =| accessdate = 2007-01-23] [cite news | last =Whitney| first =David| title =A growing glacier: Mount Shasta bucks global trend, and researchers cite warming phenomena| publisher =The Bee| date =2006-09-04| url =http://dwb.sacbee.com/content/news/story/14317368p-15234887c.html| accessdate = 2007-01-23]
List of glaciers
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