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			Photo #: STS041-86-91 Date: Oct. 1990 Geographic Region: NIGER Feature: PLATEAU DU DJADO



	STS041-086-091 Plateaus of Northeast Niger October 1990 Two major plateaus of arid northeast Niger are impressive in this near-vertical photograph. The southern edge and escarpment of the Plateau du Mangeni are seen along the northern part of the photograph, while the northernmost edge of the Plateau du Djado is discernible near the southern part of the photograph. Although it is difficult to determine accurately elevation differences between the tops of the plateaus and the valley floors, a reasonable estimate is approximately 1000 feet (300 meters) in the more severe topographic relief areas. These plateaus present major obstacles to ground transportation through this part of the Sahara Desert. Barely visible is a trail (light blue line south of the Plateau du Mangeni) that follows the valley floor between the two plateaus in a general northwest-southeast orientation. The prevailing northeast wind creates visible wind streaks in a northeast-southwest alignment along the western half of the photograph, providing evidence of surface wind erosion of these plateaus.

Images:	All Available Images Low-Resolution 144k
Mission:	STS041
Roll - Frame:	86 - 91
Geographical Name:	NIGER
Features:	PLATEAU DU DJADO
Center Lat x Lon:	22.5N x 12.5E
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:	5	LO=Low Oblique, HO=High Oblique, NV=Near Vertical
Camera Focal Length:	250
Nadir to Photo Center Direction:	SE	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:	61
Date:	19901010	YYYYMMDD
Time:	061816	GMT HHMMSS
Nadir Lat:	22.6N	Latitude of suborbital point of spacecraft
Nadir Lon:	12.3E	Longitude of suborbital point of spacecraft
Sun Azimuth:	104	Clockwise angle in degrees from north to the sun measured at the nadir point
Space Craft Altitude:	162	nautical miles
Sun Elevation:	15	Angle in degrees between the horizon and the sun, measured at the nadir point
Land Views:	DESERT, PLATEAU, ESCARPMENT, DUNE
Water Views:
Atmosphere Views:
Man Made Views:
City Views:

Photo is not associated with any sequences

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