ESAESA Informations Locales Belgique
   
Services
CalendrierRSS feedsS'abonner
 
 
 
Bookmark and Share
 
 
 
 
Les satellites guident les personnels humanitaires pour le forage des puits destinés aux réfugiés africains
 
7 septembre 2004

Sudanese refugee's gather outside their tents, Sunday, July 4, 2004, in the Koumouangou refugee camp in Chad near the Sudan border. An estimated 1 million Sudanese have been displaced during the conflict with Arab militias, with at least 200,000 fleeing into neighbouring Chad. Tents are from UNHCR (United Nations High Commission for Refugees).

Credits: AP Photo/Karel Prinsloo
 
 
Optical imagery
Underground water is not visible in optical imagery

Credits: UNHCR/UNOSAT/RTF 2004
 
 
Radar imagery
Underground water can be detected in radar imagery and water storage in alluvial deposits can be revealed down to 20 meters sub-surface.

Credits: UNHCR/UNOSAT/RTF 2004
 
 
Map of satellite and DEM derived drainage network, watersheds, underground water reserves in wadis, dams and water storage and proposed locations for drilling new wells.

Credits: UNHCR/UNOSAT/RTF 2004
 
 
Autres Articles
UN development work guided from spaceWar zone aid workers rely on ESA map from spaceSatellite mapping tools prove invaluable to Médecins Sans Frontières
Related missions
ERS overview
In depth
Earth Observation Market Development (EOMD)
Autres Liens
UNOSATUNHCRRTF
 
 
 
   Copyright 2000 - 2011 © European Space Agency. All rights reserved.