Astronaut Photography of Earth - Display Record
ISS028-E-44444
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| File Name | File Size (bytes) | Width | Height | Annotated | Cropped | Purpose | Comments | |
|---|---|---|---|---|---|---|---|---|
| View | ISS028-E-44444.JPG | 74027 | 640 | 425 | No | No | ||
| View | ISS028-E-44444.JPG | 320087 | 540 | 390 | Yes | Yes | NASA's Earth Observatory web site | |
| View | ISS028-E-44444.JPG | 1024996 | 1000 | 722 | No | Yes | NASA's Earth Observatory web site | |
| View | ISS028-E-44444.JPG | 1207832 | 4288 | 2848 | No | No |
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Electronic Image Data
Camera Files >> No sound file available.Identification
Mission: ISS028 Roll: E Frame: 44444 Mission ID on the Film or image: ISS028Country or Geographic Name: CHINA
Features: JUNGGAR BASIN, SAND DUNES, IRTYSH RIVER, WETLANDS
Center Point Latitude: 47.7 Center Point Longitude: 86.4 (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: 08Camera Focal Length: 180mm
Camera: N2: Nikon D2Xs
Film: 4288E : 4288 x 2848 pixel CMOS sensor, RGBG imager color filter.
Quality
Film Exposure:Percentage of Cloud Cover: 10 (0-10)
Nadir
Date: 20110908 (YYYYMMDD)GMT Time: 095951 (HHMMSS)Nadir Point Latitude: 47.2, Longitude: 86.4 (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction: North
Sun Azimuth: 248 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 202 nautical miles (374 km)
Sun Elevation Angle: 26 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 1390
Captions
Sand Dunes, Junggar Basin, Northwestern ChinaThis striking astronaut photograph taken from the International Space Station highlights a sand dune field within the Burqin-Haba River-Jimunai Desert near the borders of China, Mongolia, Russia, and Kazakhstan. The dune field (approximately 32 km long) is located immediately to the west-northwest of the city of Burqin (not shown), and is part of the Junggar Basin, a region of active petroleum production in northwestern China. The Irtysh River, with associated wetlands and riparian vegetation (appearing grey-green in the image) flows from its headwaters in the Altay Mountains to the east towards Siberia to the west (right to left across the image).
Tan sandy linear dunes at image center on the south side of the Irtysh River dominate the view. The linear dunes are formed from mobile barchan (crescent-shaped) dunes moving from left to right in this view; the barchans eventually merge to form the large linear dunes which can reach 50 -100 meters in height. Sand moving along the southern edge of the dune field appears to be feeding a southeastern lobe with a separate population of linear dunes (image lower right).
The Burqin-Haba River-Jimunai Desert area also includes darker gravel covered surfaces that form pavements known locally as gobi. These are somewhat indistinguishable from vegetated areas arresting some of the dunes at the resolution of the astronaut photograph, but tend to be located on the flat regions between the dunes.
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