Earth from Space - Image Information

LOCATION Direction Photo #: STS51G-46-1 Date: Jun. 1985
Geographic Region: SUDAN

STS51G-046-0001 Sudd Swamp, Sudan June 1985
The Sudd Swamp, a huge environmentally sensitive wetlands area of south-central Sudan, is seen in this photograph that shows only a part of the snarl of lakes, channels, and marshes that covers the region. The Sudd's areal extent varies from approximately 6370 square miles (16 500 square kilometers) in the dry winter season to 12 350 square miles (32 000 square kilometers) during the summer rains. The western branch of the Nile River, the White Nile, provides most of the water for this region. Initially, the word "sudd" was used to describe the great mass of floating, swampy vegetation that covers this region and tends to choke the waterflow through the main channel of the White Nile. The vegetation does function as a stabilizing influence on the rate of waterflow through the swamp. Two major features are visible--the natural attribute is the main channel of the north-flowing White Nile, which can be seen despite the lush, green vegetation that obscures most of the water surface of the river, and the manmade structure is the Jonglei Canal, which is linear, highly reflective, and aligned north-south. The canal is approximately 210 feet (65 meters) wide and has an average depth of 16 feet (5 meters). During the last two decades, the Jonglei Canal has become a controversial engineering project in this part of Africa--to the extent that a civil war curtailed its completion. The purpose for the canal was to help regulate the seasonal fluctuations in this segment of the White Nile and to drain part of the Sudd for agricultural development. Environmentalists and the local farmers proclaim that the construction of the Jonglei Canal upsets the natural rhythm of plants and animals whose migration cycles are impeded by the barrier the canal creates.

Images: All Available Images Low-Resolution 98k
Mission: STS51G  
Roll - Frame: 46 - 1
Geographical Name: SUDAN  
Center Lat x Lon: 7.1N x 31.1E
Film Exposure: U   N=Normal exposure, U=Under exposed, O=Over exposed, F=out of Focus
Percentage of Cloud Cover-CLDP: 5
Camera:: HB
Camera Tilt: 31   LO=Low Oblique, HO=High Oblique, NV=Near Vertical
Camera Focal Length: 100  
Nadir to Photo Center Direction: W   The direction from the nadir to the center point, N=North, S=South, E=East, W=West
Stereo?: Y   Y=Yes there is an adjacent picture of the same area, N=No there isn't
Orbit Number: 30  
Date: 19850619   YYYYMMDD
Time: 081341   GMT HHMMSS
Nadir Lat: 7.2N  
Latitude of suborbital point of spacecraft
Nadir Lon: 33.1E  
Longitude of suborbital point of spacecraft
Sun Azimuth: 51   Clockwise angle in degrees from north to the sun measured at the nadir point
Space Craft Altitude: 197   nautical miles
Sun Elevation: 62   Angle in degrees between the horizon and the sun, measured at the nadir point
Land Views: PLAIN  
Atmosphere Views:  
Man Made Views:  
City Views:  

Photo is not associated with any sequences

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