Science et changements planétaires / Sécheresse


Applications opérationnelles de la télédétection pour les études hydrologiques en zone soudano-sahélienne Volume 5, issue 2, Juin 1994

Faculté des sciences agronomiques, Laboratoire d’hydrologie et de télédétection, 2, passage des Déportés, B-5030 Gembloux, Belgique
  • Page(s) : 107-15
  • Published in: 1994

The present study demonstrates the possibility of combining remote-sensing and geographical information Systems (GIS) to assess the runoff potential and cartography of the ground water storage capacity in regions where only fragmentary information is available. Remote-sensing, by identifying physiographical indicators and spatially extrapolating pinpoint data, provides information on the main parameters explaining superficial runoff in accordance with accepted operational forecasting methods such as those of the SCS or Orstom. As to the useful supply of ground water, the region’s cartography is drawn up essentially according to pedological and ground information accumulated, managed and represented in a GIS. The results may then be integrated into models of rain forecast and farming statistics and be used for national planning or environmental monitoring.