File:ISS035-E-25019 (cropped).jpg
Original file (1,042 × 1,164 pixels, file size: 165 KB, MIME type: image/jpeg)
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Summary
DescriptionISS035-E-25019 (cropped).jpg |
English: This striking and detailed astronaut photograph from the International Space Station shows water of different color within subbasins of the Laguna (lake) Verde in the high Andes of northwest Argentina. The lake floor as a local low point lies at 4095 m (13,438 feet) above sea level, whereas the peak of the local volcano west of the lake (not shown) reaches over 3000 meters higher (6818 m, 22,368 feet). Laguna Verde (58 km wide, 36 km long) often appears green, giving rise to its formal name.
This image shows the turquoise tint in the central subbasin (image center), with a yellow to black tinge to water in the southern subbasin at image left (also known locally as Laguna Negro). The northernmost basin at image right appears quite black, and the large gray zone comprising much of the rest of Laguna Verde is likely a combination of shallow water, only inches deep, and sunglint reflecting off the water surface. The reason for the color differences lays in the fact the many different families of salt-loving organisms occupy hypersaline lakes such as Laguna Verde. These appear as different colors - often bright -- depending on the salinities and temperatures of each water body or subbasin. The rest of the lake floor is dry and appears white from the build-up of thick salt deposits. Parallel lines around the southern subbasin (Laguna Negro) indicate prior shorelines of this shrinking water body - evaporation removes water but leaves ephemeral shorelines marked with white salt. |
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Date | ||||
Source | NASA | |||
Author | NASA | |||
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Camera location | 27° 30′ 00″ S, 68° 42′ 00″ W | View this and other nearby images on: OpenStreetMap | -27.500000; -68.700000 |
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Licensing
Public domainPublic domainfalsefalse |
This file is in the public domain in the United States 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.) | ||
Warnings:
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Items portrayed in this file
depicts
20 April 2013
27°30'S, 68°42'W
0.0025 second
10
400 millimetre
200
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 07:00, 18 September 2020 | 1,042 × 1,164 (165 KB) | Jo-Jo Eumerus | File:ISS035-E-25019.jpg cropped 63 % horizontally, 73 % vertically using CropTool with lossless mode. |
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Metadata
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If the file has been modified from its original state, some details may not fully reflect the modified file.
Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D3S |
Exposure time | 1/400 sec (0.0025) |
F-number | f/10 |
ISO speed rating | 200 |
Date and time of data generation | 15:12, 20 April 2013 |
Lens focal length | 400 mm |
User comments | NASA 2008336 |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CS6 (Windows) |
File change date and time | 17:54, 22 April 2013 |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 15:12, 20 April 2013 |
Shutter speed | 8.643856 |
APEX aperture | 6.643856 |
Exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire |
DateTime subseconds | 78 |
DateTimeOriginal subseconds | 78 |
DateTimeDigitized subseconds | 78 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 400 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Serial number of camera | 2008336 |
Lens used | 400.0 mm f/2.8 |
Date metadata was last modified | 12:54, 22 April 2013 |
Rating (out of 5) | 0 |
Unique ID of original document | C699DB641E01ECCFD0FC66B30C4563BB |