Earth Snapshot RSS Feed Twitter

Posts tagged Santa Cruz Province

Climate Change and Argentina’s Glacial Lakes

50.2S 72.4W

February 20th, 2013 Category: Lakes

Argentina – January 26th, 2013

In Southern Santa Cruz province, Argentina’s Lake Viedma (center) is a large -1.088 km2 (420 sq.mi)- body of water, slightly smaller than Lake Argentino (below) into which it flows. It is located next to the Southern Ice Field and Viedma Glacier flows into the lake.

Argentino Lake 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). The fjords at the northwestern end of Lago Argentino are fed by five glaciers, the largest of which is the Upsala glacier. Scientists have predicted that climate change may cause the lake’s temperature to increase by 2ºC or 3ºC.

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.

Deseado River and Topography of Santa Cruz Province, Argentina

47.7S 65.8W

June 21st, 2010 Category: Rivers

Argentina - June 6th, 2010

Argentina - June 6th, 2010

The Deseado River in southern Argentina appears as a whitish line cutting across the brown Patagonian terrain in the lower portion of this image. The river rises in Buenos Aires Lake in the Andes of southern Chile and Argentina. It flows generally eastward and southeastward through Santa Cruz province.

Near Koluel Kayke and Jaramillo it sometimes disappears into the dry soils of Patagonia, but it reemerges and empties into the Atlantic at Puerto Deseado. The total length of the Deseado is approximately 380 miles (610 km). It is used for irrigation along its lower course.

Upon opening the full image, many plateaus are visible inland, in the province of Santa Cruz. The terrain near the shore is flatter and criss-crossed by roads that appear as straight, light tan lines.

Sediments from the Deseado River Near Puerto Deseado, Argentina

47.7S 65.8W

March 23rd, 2010 Category: Rivers, Sediments

Argentina - February 25th, 2010

Argentina - February 25th, 2010

Greenish sediments spill past Puerto Deseado, originally called Port Desire, a city of about 15,000 inhabitants and a fishing port in Patagonia. The city is located in the Santa Cruz Province of Argentina, on the estuary of the Deseado River.

The Deseado River is born from the glacier-thaw Buenos Aires Lake on the northwestern part of the province at the Andes range, and travels for 615 km before reaching the Atlantic Coast. On its way southeast, its water is tapped for irrigation.

The river sometimes disappears under the arid terrain, to re-emerge before reaching Puerto Deseado on Santa Cruz’s coastline, where it produces a deep-water natural port.

Baker Channel and Nearby Lakes in Patagonia – March 21st, 2010

46.4S 71.8W

March 21st, 2010 Category: Image of the day, Lakes, Mountains, Rivers

Chile and Argentina - February 25th, 2010

Chile and Argentina - February 25th, 2010

The large lake stretching from Argentina (right) into Chile (left) in the upper portion of this image is known as Buenos Aires Lake in Argentina and General Carrera Lake in Chile. The lake has a surface of 1,850 km² of which 970 km² are in the Chilean Aisén Region, and 880 km² to the Argentine Santa Cruz Province, which makes it the biggest lake in Chile, and the fourth largest in Argentina.

Several other lakes, inlets and channels can be seen by the Andes Mountains in Chile. One of these is Baker Channel, also known as Calen Inlet, located in the Aisén Region (lower left quadrant). The Baker River discharges into Martinez Inlet, the northern part of this large estuary (appearing greenish tan with sediments).

It penetrates the mainland about 75 mi and opens into Tarn Bay at the south-east corner of the Gulf of Penas. Baker Channel also receives the waters of the O’Higgins/San Martín Lake through the Pascua River. The lake’s far-reaching fjord-like arms extend approximately from lat. 49° 11′ to 48° 22′ S. Its north-west arm is that which drains into the mentioned river.