Everything about Glacier Bay totally explained
Glacier Bay is a
bay in south-eastern
Alaska,
United States. It runs north northwest to south south-east for about 105 km (65 miles) between two pinchets of Alaska. It ranges from 5-30 km (3-20 miles) wide. Glacier Bay and the surrounding land is the site of the
Glacier Bay National Park and Preserve. The area is a popular
cruise ship destination, with several ships leaving
Seattle each week during the summer with Glacier Bay as the end destination.
The explorer Captain
George Vancouver found
Icy Strait, at the south end of Glacier Bay, choked with ice in 1794. Glacier Bay itself was almost entirely iced over. In
1879 naturalist
John Muir found that the ice had retreated almost all the way up the bay. By
1916 Grand Pacific Glacier was at the head of
Tarr Inlet, about 100 km (65 miles) from Glacier Bay's mouth. This is the fastest documented glacial retreat ever. Scientists are hoping to learn how glacial activity relates to
climate changes from the retreat.
Plants progressively moved in as the glacier retreated, so a 200-year-old
spruce and
hemlock forest presently exists at the entrance, grading up to more primitive plants such as mosses and lichens at the head of the bay. Because of current local climate change due to
global warming, some glaciers are now retreating at a rate of up to a quarter of a mile per year.
Glacier Bay contains sixteen
glaciers, twelve of which reach shorelines and calve (shed broken pieces of ice) to produce
icebergs.
Other images
Image:NOAA Riggs Glacier 1992.jpg|Riggs Glacier, 1992
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Image:Glacier Bay Alaska.jpg
Image:Glacier Bay alaska .jpg
Image:Inside Passage (14).jpg
Image:Lamplugh Glacier.JPG
Further Information
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