File:Central Andes Mountains, Salar de Arizaro, Argentina.jpg
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|DescriptionCentral Andes Mountains, Salar de Arizaro, Argentina.jpg||
English: This image was taken by an astronaut looking south-east across the South American continent when the International Space Station (ISS) was almost directly over the Atacama Desert near Chile’s Pacific coast. The high plains (3000–5000 meters) of the Andes Mountains, also known as the Puna, appear in the foreground, with a line of young volcanoes facing the much lower Atacama Desert (1000–2000 m elevation). Several salt-crusted dry lakes (known as salars in Spanish) occupy the basins between major thrust faults in the Puna. Salar de Arizaro (foreground) is the largest of the dry lakes in this view. The Atlantic Ocean coastline, where Argentina’s capital city of Buenos Aires sits along the Río de la Plata, is dimly visible at image top left. Near image centre, the transition between two distinct geological zones, the Puna and the Sierras Pampeanas, creates a striking landscape contrast. Compared to the Puna, the Sierras Pampeanas mountains are lower in elevation and have fewer young volcanoes. Sharp-crested ridges are separated by wide, low valleys in this region. The Salinas Grandes—ephemeral shallow salt lakes—occupies one of these valleys. The general colour change from reds and browns in the foreground to blues and greens in the upper part of the image reflects the major climatic regions: the deserts of the Atacama and Puna versus the grassy plains of central Argentina, where rainfall is sufficient to promote lush prairie grass, known locally as the pampas. The Salinas Grandes mark an intermediate, semiarid region.
|Date||17 May 2010|
|Source||NASA Earth Observatory|
|Author||The NASA Expedition 23 crew|
|View this and other nearby images on:||( Info)-25.999944444444;-67.500027777778|
|This image or video was catalogued by Johnson Space Centre of the United States National Aeronautics and Space Administration (NASA) under Photo ID: ISS023-E-28353.
This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing for more information.
Taken with a Nikon D3S digital camera fitted with an 80 mm lens. Provided by the ISS Crew Earth Observations experiment and Image Science & Analysis Laboratory, Johnson Space Centre.
|Public domainPublic domainfalse|
|This file is in the public domain because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)||
|Annotations||This image is annotated: View the annotations at Commons|
Salar de Arizaro
Puna (High Andes)
Rio de la Plata
|Camera manufacturer||NIKON CORPORATION|
|Camera model||NIKON D3S|
|Exposure time||1/640 sec (0.0015625)|
|ISO speed rating||400|
|Date and time of data generation||12:32, 26 April 2010|
|Lens focal length||80 mm|
|Horizontal resolution||240 dpi|
|Vertical resolution||240 dpi|
|Software used||GIMP 2.6.8|
|File change date and time||13:25, 17 May 2010|
|Exposure Program||Aperture priority|
|Date and time of digitizing||12:32, 26 April 2010|
|Maximum land aperture||3 APEX (f/2.83)|
|Flash||Flash did not fire|
|Sensing method||One-chip colour area sensor|
|Custom image processing||Normal process|
|Exposure mode||Auto exposure|
|White balance||Auto white balance|
|Digital zoom ratio||1|
|Focal length in 35 mm film||80 mm|
|Scene capture type||Standard|
|Subject distance range||Unknown|
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