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Posts tagged Lake Viedma

Milky Blue of Argentine Glacial Lakes

49.5S 72.6W

February 27th, 2013 Category: Lakes

Argentina and Chile – January 25th, 2013

Visible in the lower left quadrant of this image are three bright blue glacial lakes in Argentine Patagonia: Argentino Lake, Lake Viedma and Lake San Martín (below to above).

A glacial lake is a lake with origins in a melted glacier. They are formed when a glacier erodes the land, and then melts, filling the hole or space that they have created. The scouring action of the glaciers pulverizes minerals in the rock over which the glacier passes. These pulverized minerals become sediment at the bottom of the lake, and some of the rock flour becomes suspended in the water column, giving the water a milky blue color.

Milky Blue Glacier Lakes in Patagonia by Chile-Argentina Border

49.5S 72.6W

February 10th, 2012 Category: Glaciers and Ice Caps, Lakes

Argentina - February 6th, 2012

Glacial lakes appearing bright blue in color can be observed in Patagonia by the Andes Mountains and the border between Chile (west) and Argentina (east). The lakes are, from top to bottom, Lake O’Higgins/San Martín (the former name is used in Chile, the latter in Argentina), Viedma Lake and Argentino Lake.

Lake O’Higgins / San Martín is located between the Aysén Region and the Santa Cruz Province. It has a surface area of 1,058 km², an elevation of 250 metres above mean sea level, and a shoreline length of 525 km. Viewed from above, the lake consists of a series of finger-shaped flooded valleys, of which 554 km² are in Chile and 459 km² in Argentina, although sources differ on the precise split, presumably reflecting water level variability. The lake is the deepest in the Americas with a maximum depth of 836 metres near O’Higgins Glacier, and its characteristic milky light-blue color comes from rock flour suspended in its waters.

Viedma Lake, approximately 50 miles (80 kilometers) long, is a major elongated trough lake formed from melting glacial ice. Lake Viedma is fed primarily by the Viedma Glacier at its the western end. The Viedma Glacier measures 3 miles (5 kilometers) wide at its terminus at Lake Viedma. The brown landscape is a result of ice scouring, which left virtually no vegetation on the steep-walled valleys. Water from lake Viedma flows into Lake Argentino through the La Leona River.

Lago Argentino is the biggest freshwater lake in Argentina, with a surface area of 1466 km2 (maximum width: 20 mi). It has an average depth of 150 m, and a maximum depth of 500 m. The lake lies within the Los Glaciares National Park, in a landscape with numerous glaciers and is fed by the glacial meltwater of several rivers, the water from Lake Viedma brought by the La Leona River, and many mountain streams. Its drainage basin amounts to more than 17000 km2.

Lakes by Chile-Argentina Border and Tierra del Fuego

54.7S 65.6W

September 21st, 2011 Category: Lakes

Argentina - August 16th, 2011

This image stretches across the Argentine province of Santa Cruz to Tierra del Fuego, shared by Chile and Argentina. Visible in the lower right corner is Mitre Peninsula, the easternmost part of Isla Grande de Tierra del Fuego.

The land to the east is snow-free, while that to the west, by the Andes Mountains, is snow-covered. Visible amidst the snow are three bright blue lakes: Lake O’Higgins/San Martín, Lake Viedma and Lake Argentino (from north to south).

The lake known as O’Higgins in Chile and San Martín in Argentina, is located in Patagonia, between the Aysén Region and the Santa Cruz Province. Its surface is of 1,058 km² at 250 metres above mean sea level, and has a shoreline length of 525 km. Viewed from above, the lake consists of a series of finger-shaped flooded valleys, of which approximately 554 km² are in Chile and 459 km² in Argentina.

Viedma Lake, approximately 50 miles (80 kilometers) long in southern Patagonia near the border between Chile and Argentina, is a major elongated trough lake formed from melting glacial ice. The Viedma Glacier measures 3 miles (5 kilometers) wide at its terminus at Lake Viedma.

Lago Argentino is a lake in the Patagonian province of Santa Cruz, Argentina. It is the biggest freshwater lake in Argentina, with a surface area of 1,466 km2 (566 sq mi) (maximum width: 20 mi (32 km)). It has an average depth of 150 m (492 ft), and a maximum depth of 500 m (1,640 ft).

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