File:Alluvial fan in Iran.jpg
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Summary[edit]
DescriptionAlluvial fan in Iran.jpg |
English: Seasonally dry salt lakes and the traces of ephemeral streams occupy many of the valleys of the Zagros Mountains in southern Iran. Much of the time, the rivers and lakes are dry above ground, but subterranean water flows along the same pathways. Where these subterranean streams flow out of the mountains, the water table comes closer to the surface, and it is more readily accessible through wells.
This simulated natural-color image of southeastern Fars province in southern Iran shows a dry river channel carving through arid mountains toward the northeast. The dry river spreads out across the valley floor in a silvery fan. A broad belt of lush agricultural land follows the curve of the fan and stretches out along a road that runs parallel to the ridgeline. The valley-ward margin of the intensely green agricultural belt fades to dull green along streams (or irrigation canals). The image was captured by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite on October 12, 2004. |
Date | |
Source | http://earthobservatory.nasa.gov/IOTD/view.php?id=36041 |
Author | NASA image created by Jesse Allen, using data from NASA/GSFC/METI/ERSDAC/JAROS, and the U.S./Japan ASTER Science Team. Caption by Rebecca Lindsey, based on interpretation provided on the ASTER Project Science Imagery Gallery Website. |
Licensing[edit]
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.) | ||
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 19:38, 2 December 2018 | 1,451 × 1,031 (704 KB) | Ariadacapo (talk | contribs) | Cropped 52 % horizontally, 57 % vertically using CropTool with lossless mode. | |
19:36, 2 December 2018 | 3,000 × 2,400 (3.22 MB) | Ariadacapo (talk | contribs) | Full-size original from source | ||
00:27, 17 February 2010 | 720 × 480 (300 KB) | File Upload Bot (Magnus Manske) (talk | contribs) | {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|Alluvial Fan in Southern Iran NASA image created by Jesse Allen, using data from NASA/GSFC/METI/ERSDAC |
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This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
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Width | 5,661 px |
Height | 5,035 px |
Bits per component |
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Compression scheme | LZW |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 100 dpi |
Vertical resolution | 100 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CS3 Macintosh |
File change date and time | 12:33, 1 December 2008 |
Color space | Uncalibrated |
Image width | 3,000 px |
Image height | 2,400 px |
Date and time of digitizing | 07:33, 1 December 2008 |
Date metadata was last modified | 07:33, 1 December 2008 |