Earth from Space - Image Information

LOCATION Direction Photo #: ISS049-E-43349 Date: Oct. 2016
Geographic Region: LIBYA
Feature: AL JAWF, AGR., DES.

Al Jawf, Eastern Libya

Astronauts aboard the International Space Station used an 1150 mm lens to capture this photograph of a variety of agricultural patterns near an oasis in eastern Libya. This area is one of the most remote places in Africa, more than 900 kilometers (560 miles) from the nearest major city. The cluster of buildings, roads, and small farming operations near the top of the photo is the town of Al Jawf.

Each farming pattern in the image is related to different irrigation methods. The honeycombs in the center are what remains of the first planned farming method in the Libyan Desert, implemented around 1970. The large circles (about 1 kilometer wide) of center-pivot irrigation systems (lower left) replaced the honeycombs in order to conserve water. The grid system (upper left) is perhaps one of the oldest known to planned agriculture, but it is still used alongside the more modern patterns. (This wider view shows the full extent of the oasis.)

Near Al Jawf, the oasis is covered in lush green gardens and palm trees that survive due to pumping from the largest known fossil water aquifer in the world: the Nubian Sandstone Aquifer. More than 20,000 years ago, the Saharan landscape was wet, and heavy rainfall continuously refilled the aquifer. Today the region receives less than 0.1 inches of rain a year, making this aquifer a non-renewable resource. An agreement was recently hashed out between Libya and the UN Food and Agriculture Organization to improve food security in the region by developing the country's agriculture industry. This means the use of fossil water will continue, and the agricultural patterns we see today are likely to survive for years to come.

Images: All Available Images Low-Resolution 185k
Mission: ISS049  
Roll - Frame: E - 43349
Geographical Name: LIBYA  
Features: AL JAWF, AGR., DES.  
Center Lat x Lon: 24.1N x 23.2E
Film Exposure:   N=Normal exposure, U=Under exposed, O=Over exposed, F=out of Focus
Percentage of Cloud Cover-CLDP: 0
Camera:: N6
Camera Tilt: 29   LO=Low Oblique, HO=High Oblique, NV=Near Vertical
Camera Focal Length: 1150  
Nadir to Photo Center Direction: SW   The direction from the nadir to the center point, N=North, S=South, E=East, W=West
Stereo?:   Y=Yes there is an adjacent picture of the same area, N=No there isn't
Orbit Number:  
Date: 20161022   YYYYMMDD
Time: 071812   GMT HHMMSS
Nadir Lat: 25.1N  
Latitude of suborbital point of spacecraft
Nadir Lon: 24.9E  
Longitude of suborbital point of spacecraft
Sun Azimuth: 127   Clockwise angle in degrees from north to the sun measured at the nadir point
Space Craft Altitude: 215   nautical miles
Sun Elevation: 36   Angle in degrees between the horizon and the sun, measured at the nadir point
Land Views:  
Water Views:  
Atmosphere Views:  
Man Made Views:  
City Views:  

Photo is not associated with any sequences

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