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Posts tagged Atacama Desert

Green Water by Mejillones Peninsula, Chile

23.1S 70.4W

February 20th, 2011 Category: Deserts, Phytoplankton

Chile - February 10th, 2011

The Mejillones Peninsula reaches out into the Pacific from Chilean coastline. It marks the country’s widest point along a parallel (362 km).

A green stain, created by sediments or phytoplankton, can be observed in the water both north and south of the peninsula. Inland, the dry terrain belongs to the Atacama Desert, the world’s driest desert.

Chile, from the Antofagasta Region to the Los Lagos Region

36.6S 72.1W

February 26th, 2010 Category: Lakes, Mountains

Chile - February 12th, 2010

Chile - February 12th, 2010

The Andes Mountains run vertically through the center of this image, separating Chile (west) from Argentina (east). Upon opening the full image, much of the coast of Chile is visible, stretching from the Antofagasta Region in the north to the Los Lagos Region in the south.

The Antofagasta Region has a mostly desert climate, part of the Atacama Desert, with variations in the amount of annual rainfall from the coast to the highland desert. This varies greatly from the Los Lagos Region, which generally has a natural vegatation of Valdivian temperate rain forest. The coastal part, except for south of Chiloé Island, has a temperate climate with cold winter rain. To the south, the climate is characterized by constant rain and not having dry seasons.

Across the Andes in Argentina, in the lower right corner, is  the Ezequiel Ramos Mexía Reservoir, created by the El Chocón Dam on the Limay River in northwestern Argentine Patagonia. The dam is used to regulate the flow of the Limay River, for irrigation, and for the generation of hydroelectricity.

Salt Flats and Atacama Desert, Bolivia and Chile

20.1S 67.5W

February 21st, 2010 Category: Salt Flats

Chile and Bolivia - February 12th, 2010

Chile and Bolivia - February 12th, 2010

The Salar de Uyuni (larger) and the Salar de Coipasa (smaller) stand out as bright reflective white areas in the center of the upper half of this image. The salares, or salt flats, are located in Bolivia, close to the Chilean border.

To the south, in Chile, the Mejillones Peninsula protrudes into the Pacific from the otherwise generally smooth coastline. The Atacama Desert, the world’s driest desert, is visible to the east of the peninsula.

Salar de Arizona on the Andean High Plateau, Argentina

24.7S 67.7W

November 12th, 2009 Category: Volcanoes

Argentina - September 29th, 2009

Argentina - September 29th, 2009

The Central Andean dry puna is an ecoregion located in the Andean High plateau, in South America. It is a part of the Puna grassland, occupying the southwestern portion of the Altiplano, and is located east of the Atacama Desert.

Salt Flats, locally known as Salares, are a characteristic feature of this ecoregion. Among the largest of these is the Salar de Arizaro, visible as a large, flat light grey area in this orthorectified image.

It is the largest salar of Puna, Argentina, with a surface area of 1500 km2, and the third largest salar in the Andes, after the Salar de Uyuni in Bolivia and the Salar de Atacama in Chile. The salar is used for metallic and non-metallic mining, as is it rich in salt, iron, marble, onyx and copper.

Also visible in the upper left corner, near the salar, is the Aracar Volcano. It is a large conical stratovolcano in northwestern Argentina, just east of the Chilean border. It has an uneroded summit crater about 1.5 km in diameter which contains a small crater lake.

It is located on the edge of the Puna de Atacama, a high desert plateau east of the Atacama Desert. The only observed volcanic activity was a possible steam or ash plume on March 28, 1993, seen from the village of Tolar Grande about 50 km southeast of the volcano.

Antofalla Volcano and the Salar de Antofalla, Argentina – November 8th, 2009

25.8S 67.7W

November 8th, 2009 Category: Image of the day, Volcanoes

Argentina - September 29th, 2009

Argentina - September 29th, 2009

The Salar de Antofalla runs horizontally through this orthorectified image of northwestern Argentina. It is a large playa of over 140 km (87 mi) in length, appearing here as a long and flat light grey area.

A cluster of volcanoes can be seen in the upper left quadrant, west of the salar. One of the largest of these is Antofalla, a big and very remote stratovolcano in Catamarca Province. It is located on the edge of the Puna de Atacama, a high desert plateau east of the Atacama Desert.