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  Image: Geographic Location Direction Photo #: STS026-45-5 Date: na 1988
Geographic Region: LIBYA
Feature: KUFRA OASIS, PIVOT IRRIG

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  STS026-045-005 Al Khufrah Oasis, Libya October 1988
Circular features in the desert, which almost always indicate irrigated agriculture, appear in this near-vertical photograph of the Al Khufrah Oasis in southeastern Libya. This center-pivot irrigation system uses ground water that is pumped under pressure into a gantry or tubular arm from a central source. Anchored by a central pivot, the gantry slowly rotates over the area to be irrigated, thereby producing the circular patterns. Although the field diameters vary, these fields are approximately 0.6 mile (1 kilometer) in diameter. Darker colors indicate fields where such crops as wheat and alfalfa are grown; lighter colors show fields that have been harvested recently; fields that are lying fallow, fields that have just been planted, or fields that have been taken out of production. Because hot, dry winds have a devastating effect on plants and livestock in this desert environment, adequate water and suitable soils are not always sufficient for agriculture and livestock production. Visible are a long, north-south-aligned airport runway in the center of the photograph and hexagonal features southwest of the airport runway that are perhaps either more desert agriculture (without center-pivot irrigation) or military sites.
 
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Images: All Available Images Low-Resolution 100k
Mission: STS026  
Roll - Frame: 45 - 5
Geographical Name: LIBYA  
Features: KUFRA OASIS, PIVOT IRRIG  
Center Lat x Lon: 24.0N x 23.5E
Film Exposure: N   N=Normal exposure, U=Under exposed, O=Over exposed, F=out of Focus
Percentage of Cloud Cover-CLDP: 0
 
Camera: HB
 
Camera Tilt: NV   LO=Low Oblique, HO=High Oblique, NV=Near Vertical
Camera Focal Length: 250  
 
Nadir to Photo Center Direction:   The direction from the nadir to the center point, N=North, S=South, E=East, W=West
Stereo?: N   Y=Yes there is an adjacent picture of the same area, N=No there isn't
Orbit Number: 60  
 
Date: 1988____   YYYYMMDD
Time:   GMT HHMMSS
Nadir Lat: N  
Latitude of suborbital point of spacecraft
Nadir Lon: E  
Longitude of suborbital point of spacecraft
Sun Azimuth:   Clockwise angle in degrees from north to the sun measured at the nadir point
Space Craft Altitude:   nautical miles
Sun Elevation:   Angle in degrees between the horizon and the sun, measured at the nadir point
Land Views: DESERT, DUNE  
Water Views:  
Atmosphere Views:  
Man Made Views: PIVOT IRRIGATION, AGRICULTURE  
City Views:  
Photo is not associated with any sequences


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