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The Gateway to Astronaut Photography of Earth
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Astronaut Photography of Earth - Display Record
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IdentificationMission: NM21 Roll: 746 Frame: 24 Mission ID on the Film or image: NM21
Country or Geographic Name: UZBEKISTAN
Features: ARAL SEA, SUNGLINT
Center Point: Latitude: 44.5 Longitude: 59.5 (Negative numbers indicate south for latitude and west for longitude)
Stereo: Yes (Yes indicates there is an adjacent picture of the same area)
ONC Map ID: F-05 JNC Map ID: 23
CameraCamera Tilt: 53
Camera Focal Length: 100mm
Camera: HB: Hasselblad
Film: 5046 : Kodak, natural color positive, Lumiere 100/5046, ASA 100, standard base.
QualityFilm Exposure: Normal
Percentage of Cloud Cover: 5 (0-10)
GMT Date: 19960514 (YYYYMMDD) GMT Time: 084801 (HHMMSS)
Nadir Point Latitude: 46.2, Longitude: 55.1 (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction: East
Sun Azimuth: 196 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 210 nautical miles (389 km)
Sun Elevation Angle: 62 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 999
CaptionsNM21-746-024 Aral Sea, Kazakhstan and Uzbekistan Spring-Summer 1996
As a result of the shrinking size (due to the loss of recharge water and a high rate of evaporation) of the Aral Sea, both Vozrozhdeniya Island (irregular-shaped, large) and Barsakel’mes Island (elongated, smaller) are gaining more surface area, which was formerly the sea floor. If sea level continues to drop the Aral Sea could continue to become more compartmentalized (the Little Aral Sea – not in this image – has already been created north of the Aral Sea). As more of the sea bottom is exposed and the islands and peninsulas become connected land, the existing Aral Sea could become several separate bodies of water – forming new lakes. Since much less fresh water now enters the sea (most water diverted for agriculture), salinity levels have steadily increased since 1960. The bright area in the eastern (left) half of the sea is caused by the sun’s reflection off of the water’s surface, a phenomenon known as sunglint or sun glitter. A pipeline right of way and a road (thin, light-colored, lined feature) parallel the west side of the sea.
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Recommended Citation: Earth Science and Remote Sensing Unit, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth." .