Photo #: ISS005-E-9293 Date: Aug. 2002 Geographic Region: SAUDI ARABIA Feature: SAND DUNES, DEPRESSIONS |
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. |
Images: | All Available Images Low-Resolution 118k |
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Mission: | ISS005 |
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Roll - Frame: | E - 9293 |
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Geographical Name: | SAUDI ARABIA |
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Features: | SAND DUNES, DEPRESSIONS |
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Center Lat x Lon: | 27.1N x 45.1E |
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Film Exposure: | N=Normal exposure, U=Under exposed, O=Over exposed, F=out of Focus |
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Percentage of Cloud Cover-CLDP: | 10 |
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Camera:: | E4 |
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Camera Tilt: | 46 | LO=Low Oblique, HO=High Oblique, NV=Near Vertical |
Camera Focal Length: | 800 |
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Nadir to Photo Center Direction: | SW | The direction from the nadir to the center point, N=North, S=South, E=East, W=West |
Stereo?: | Y=Yes there is an adjacent picture of the same area, N=No there isn't |
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Orbit Number: | 1253 |
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Date: | 20020810 | YYYYMMDD |
Time: | 103855 | GMT HHMMSS |
Nadir Lat: | 29.1N |
Latitude of suborbital point of spacecraft |
Nadir Lon: | 48.1E |
Longitude of suborbital point of spacecraft |
Sun Azimuth: | 247 | Clockwise angle in degrees from north to the sun measured at the nadir point |
Space Craft Altitude: | 211 | nautical miles |
Sun Elevation: | 62 | Angle in degrees between the horizon and the sun, measured at the nadir point |
Land Views: | DUNE |
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Water Views: | RIVER, SEA |
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Atmosphere Views: | |
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Man Made Views: | |
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City Views: | RIYADH |
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Photo is not associated with any sequences |
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