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Central Andes Mountains, Salar de Arizaro, Argentina
 

 

 

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Summary

Description
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(2010-05-17)
Source NASA Earth Observatory
Author The NASA Expedition 23 crew

Camera location

25° 59' 59.8" S, 67° 30' 0.1" W

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Shuttle.svg This image or video was catalogued by Johnson Space Center of the United States National Aeronautics and Space Administration (NASA) under Photo ID: ISS023-E-28353.
This tag does not indicate the copyright status or the source of the attached work. A normal copyright tag and a source are 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 Center.

Licensing

Public domain This file is in the public domain because it was 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.)

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Licensing:
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EXIF data:
File name central_andes_mountains__salar_de_arizaro__argentina.jpg
Size, bytes 8021863
Mime type image/jpeg
Image input equipment manufacturer NIKON CORPORATION
Image input equipment model NIKON D3S
Orientation of image 1
Image resolution in width direction 240/1
Image resolution in height direction 240/1
Unit of X and Y resolution 2
Exposure time 1/640
F number 11/1
Exposure program 3
ISO speed rating 400
Exif version 0221
Lens focal length 800/10
Date and time original image was generated 2010:04:26 12:32:14
Date and time image was made digital data 2010:04:26 12:32:14
Shutter speed 9321928/1000000
Aperture 6918863/1000000
Exposure bias 0/6
Maximum lens aperture 30/10
Metering mode 5
User comments ASCIINASA#2007934
Color space information 1
Exif image width 2800
Exif image length 4256
Sensing method 2
Scene type 
CFA pattern 
Digital zoom ratio 1/1
Focal length in 35 mm film 80
Gain control 1
Software used GIMP 2.6.8
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