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Astronaut Photography of Earth - Display Record
ISS010-E-13539
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| File Name | File Size (bytes) | Width | Height | Annotated | Cropped | Purpose | Comments | |
|---|---|---|---|---|---|---|---|---|
| View | ISS010-E-13539.JPG | 83294 | 639 | 435 | No | No | ||
| View | ISS010-E-13539.JPG | 309868 | 540 | 357 | Yes | Yes | NASA's Earth Observatory web site | |
| View | ISS010-E-13539.JPG | 309868 | 540 | 357 | Yes | Yes | Earth From Space collection | |
| View | ISS010-E-13539.JPG | 977193 | 1000 | 661 | No | Yes | NASA's Earth Observatory web site |
Large Images to Request for Downloading
| File Name | File Size (bytes) | Width | Height | Annotated | Cropped | Purpose | Comments | |
|---|---|---|---|---|---|---|---|---|
| Request | ISS010-E-13539.JPG | 972081 | 3032 | 2064 | No | No | ||
| Request | ISS010-E-13539.JPG | 977193 | 1000 | 661 | No | Yes | Earth From Space collection |
Download a Keyhole Markup Language (KML) file for use in Google Earth.
Electronic Image Data
Camera Files >> No sound file available.Identification
Mission: ISS010 Roll: E Frame: 13539 Mission ID on the Film or image: ISS010Country or Geographic Name: ALGERIA
Features: ISSAOUANE SAND SEA, STAR DUNES
Center Point Latitude: 26.8 Center Point Longitude: 7.3 (Negative numbers indicate south for latitude and west for longitude)
Stereo: (Yes indicates there is an adjacent picture of the same area)
ONC Map ID: JNC Map ID:
Camera
Camera Tilt: High ObliqueCamera Focal Length: 800mm
Camera: E4: Kodak DCS760C Electronic Still Camera
Film: 3060E : 3060 x 2036 pixel CCD, RGBG array.
Quality
Film Exposure:Percentage of Cloud Cover: 10 (0-10)
Nadir
Date: 20050116 (YYYYMMDD)GMT Time: 142512 (HHMMSS)Nadir Point Latitude: 36.7, Longitude: 19.4 (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction: Southwest
Sun Azimuth: 230 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 188 nautical miles (348 km)
Sun Elevation Angle: 14 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 3185
Captions
Issaouane Erg, AlgeriaThe Issaouane Erg (sand sea) is located in eastern Algeria between the Tinrhert Plateau to the north and the Fadnoun Plateau to the south. Ergs are vast areas of moving sand with little to no vegetation cover. Considered to be part of the Sahara Desert, the Issaouane Erg covers an area of approximately 38,000 km2. These complex dunes form the active southwestern border of the sand sea.
The most common landforms in the image are star dunes and barchan (or crescent) dunes. Small linear dunes appear at top left. Star dunes are formed when sand is transported from variable wind directions, whereas barchan dunes form in a single dominant wind regime. The superimposition of two dune types suggests that wind regimes have changed through time. The active nature of this portion of the Erg is well illustrated by this image—smaller dunes form and migrate along the flanks of the larger dunes and sand ridges. Occasional precipitation fills basins formed by the dunes; as the water evaporates, salt deposits are left behind which appear as bluish-white areas.
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