Fig. 5From: A new tool for the remote sensing of groundwater tables: satellite images of pastoral wellsTypical satellite imagery of pastoral wells in Batha and Bahr el Ghazal. Top: very high resolution (Worldview) images of 4-pulley wells. Bottom left: very high resolution image of a 2 pulley shaft. Bottom right: high resolution (SPOT) image of a 5 pulley wellBack to article page