File:Crop Circles in the Saudi Desert (MODIS 2024-03-08).jpg
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Summary
editDescriptionCrop Circles in the Saudi Desert (MODIS 2024-03-08).jpg |
English: March 5, 2024 March 6, 2000
Neat patches of green filled part of the vast tan desert of Wadi As-Sirhan, Saudi Arabia on March 5, 2024, when the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite acquired this true-color image. Located in the north of the country, Wadi As-Sirhan was little more than barren desert just a few decades ago, with rainfall and water so rare that only a few towns clung to survival. Images acquired as recently as 1986 show no green patches at all, just the tan tones typical of arid sand and gravel desert. Since that time, patches of green began to sprout up—slowly at first and then more rapidly—thanks to the introduction of center-pivot irrigation. Sometimes called “precision agriculture,” this approach pumps water up from far underground and delivers it in rotation around a center point, creating a circular agricultural field. Vegetables, fruit, and grains grow abundantly within the circles. Over time, the circular fields have also grown more abundant in the Wadi As-Sirhan and other parts of Saudi Arabia. The water feeding the crop circles comes from an ancient aquifer and is thought to be about 20,000 years old. The al-Disi aquifer sits primarily under Saudi Arabia, but parts of it are located beneath Jordan. Like the oil that lies under the desert, the water within the aquifer is a non-renewable resource. To illustrate the growth of agriculture in the Wadi As-Sirhan over time, today’s Image of the Day compares the image acquired by Terra MODIS on March 5, 2024, with one acquired of the same area by Terra MODIS on March 6, 2000. The expansion of center-pivot agriculture is obvious—and amazing. In these images, actively growing crops form circles of green while fallow fields appear brown. |
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Date | Taken on 5 March 2024 | ||
Source |
Crop Circles in the Saudi Desert (direct link)
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Author | MODIS Land Rapid Response Team, NASA GSFC |
This media is a product of the Terra mission Credit and attribution belongs to the mission team, if not already specified in the "author" row |
Licensing
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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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current | 05:05, 8 March 2024 | 1,096 × 876 (446 KB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of http://modis.gsfc.nasa.gov/gallery/images/image03082024_250m.jpg via Commons:Spacemedia |
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Width | 1,096 px |
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Height | 876 px |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop 22.1 (Macintosh) |
File change date and time | 13:01, 7 March 2024 |
Exif version | 2.31 |
Color space | Uncalibrated |
Unique ID of original document | E48BD9A194AD037252BB66F466042C36 |
Date and time of digitizing | 07:59, 7 March 2024 |
Date metadata was last modified | 08:01, 7 March 2024 |