< ISS005-E-9293 >
| NASA Photo ID | ISS005-E-9293 |
| Focal Length | 800mm |
| Date taken | 2002.08.10 |
| Time taken | 10:38:55 GMT |
Resolutions offered for this image:
540 x 724 pixels 1000 x 1341 pixels 540 x 724 pixels 3032 x 2064 pixels 639 x 435 pixels
540 x 724 pixels 1000 x 1341 pixels 540 x 724 pixels 3032 x 2064 pixels 639 x 435 pixels
Spacecraft nadir point: 29.1° N, 48.1° E
Photo center point: 27.1° N, 45.1° E
Photo center point by machine learning:
Photo center point: 27.1° N, 45.1° E
Photo center point by machine learning:
Nadir to Photo Center: Southwest
Spacecraft Altitude: 211 nautical miles (391km)
Country or Geographic Name: | SAUDI ARABIA |
Features: | SAND DUNES, DEPRESSIONS |
| Features Found Using Machine Learning: | |
Cloud Cover Percentage: | 10 (1-10)% |
Sun Elevation Angle: | 62° |
Sun Azimuth: | 247° |
Camera: | Kodak DCS760c Electronic Still Camera |
Focal Length: | 800mm |
Camera Tilt: | 46 degrees |
Format: | 3060E: 3060 x 2036 pixel CCD, RGBG array |
Film Exposure: | |
| Additional Information | |
| Width | Height | Annotated | Cropped | Purpose | Links |
|---|---|---|---|---|---|
| 540 pixels | 724 pixels | Yes | Yes | Earth From Space collection | Download Image |
| 1000 pixels | 1341 pixels | No | Yes | NASA's Earth Observatory web site | Download Image |
| 540 pixels | 724 pixels | No | Yes | NASA's Earth Observatory web site | Download Image |
| 3032 pixels | 2064 pixels | No | No | Download Image | |
| 639 pixels | 435 pixels | No | No | Download Image |
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No GeoTIFF is available for this photo.Image Caption: Ad Dahna Sand Cordon, Saudi Arabia:
Driven by northwesterly winds, sands from northwest Saudi Arabia have accumulated in the center of the country as great rivers of dunes (cordons) that extend for hundreds of kilometers. About 320 kilometers northwest of Riyadh, the steep, almost cliff-like margin of the Ad Dahna cordon casts a shadow (right center; diagonally across the scene). Two types of dune surface appear: the tracery of numerous linear dunes (center) and a featureless sand sheet (lower left). Dark, older rocks (30-65 million years old--top right) underlie the sand sea and crop out northeast of the cordon. Convergent dry river beds appear top right.
Astronauts have obtained thousands of detailed images of the world's remote deserts, helping scientists better understand local geomorphological features in a regional context.
Driven by northwesterly winds, sands from northwest Saudi Arabia have accumulated in the center of the country as great rivers of dunes (cordons) that extend for hundreds of kilometers. About 320 kilometers northwest of Riyadh, the steep, almost cliff-like margin of the Ad Dahna cordon casts a shadow (right center; diagonally across the scene). Two types of dune surface appear: the tracery of numerous linear dunes (center) and a featureless sand sheet (lower left). Dark, older rocks (30-65 million years old--top right) underlie the sand sea and crop out northeast of the cordon. Convergent dry river beds appear top right.
Astronauts have obtained thousands of detailed images of the world's remote deserts, helping scientists better understand local geomorphological features in a regional context.
