Taku glacier
The Glacier Taku is a coastal glacier of the Alaska of South-east, just in the south-east of the town of Juneau.
The glacier was initially named Glacier Schultze in 1883 then Glacier Foster in 1890, but Taku , the name that the local améridiens Tlingit had for the glacier, was essential. It is in the Coast Mountains and occurs in the Icecap of Juneau ( Juneau Icefield ) of which it is the largest glacier and one the coastal glaciers southernmost of the northern hemisphere.
The glacier, which converges towards the Taku River in the Taku bay, has several times progressed, in its history, until it blocks the river, creating a lake, followed by a dramatic rupture of the ice-barrage. Most recent from these projections of the glacier goes back to 1750. The glacier has advanced of 7,5 kilometers since 1890. It is the only glacier which advances of the 20 more important glaciers coming from the Juneau Icefield . If this continuous advance, it will block the river again. Since 1946, the glacier is observed annually by the Juneau Icefield Research Program , which noted an advance of the glacier since 1988 of 17 meters per annum. This advance is caused by a positive balance of the mass of the glacier (more ice which is formed than of ice which melts). Until now, the glacier, because of this positive balance of mass, seemed insensitive with the climate warming which impacts all the other surrounding glaciers. The recent inversion of this balance between 1989 and 2005 is not sufficient for still stopping this advance but is this undoubtedly first sign which the glacier will not progress any more in the future.
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