Estimated Civilian Population Movement from N´Djamena, Chad (Bridge Zone 1) on 4 February 2008

Wed, 27 Feb 2008 17:38:34 GMT
Product ID: 1109 - English
Published: 27 Feb, 2008
GLIDE: CE-2008-000029-TCD
FootPrint (Lat x Long, WSG84 Geographic, decimal degrees)
TopLeft: 12.092687 x 15.10771
BottomRight: 12.086795 x 15.110122

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This map presents a satellite-based estimation of the number of civilians leaving the capital city of N'Djamena towards Kousseri, Cameroon on Monday, 4 February 2008. This estimate is based on an crowd density analysis of a WorldView-1 satellite image acquired at a spatial resolution of 50 cm. The resulting estimate of 15,000 people represents only pedestrians at two bridge locations at approximately 10:30 UTC, and does not reflect those who crossed later in the day. This is a preliminary estimate, and has not yet been validated in the field. Map Scale for A3: 1:9,000; Projection : UTM Zone 33 North; Datum: WGS 1984
Satellite Data: WorldView-1
Image Resolution: 50 cm (Panchromatic)
Image Date: 4 February 2008
Image Time: Approximately 10:30 UTC
Image Copyright : Digital Globe 2008
Population Analysis: UNOSAT
GIS Data: USGS, NGA, UNJLC, SALB
Road Data : Vectorized from Google Earth
Map Production : UNOSAT (27 February 2008)