Sujet
Fog nets
Légende
A bank of fog rolls over the countryside near Lusikisiki in the Eastern Cape on Sunday October 31, 2004.Fog forms when water vapor cools down and condenses to form tiny water droplets in the atmosphere. Apart from altitude, there is not much difference between clouds and fog. Fog formation is, however, directly affected by near-surface conditions, adiabatic cooling and flow patterns in the atmosphere. Fog collects on the nets and runs down into a tank. Many locations are suitable for fog water collection. Frequent fog episodes even appear in extremely dry regions, or high altitude mountains, where clean drinking water is not always accessible. Fog water may serve as an additional source of water, which in turn, may contribute significantly to the quality of life. (Photo by Christine Nesbitt)
Crédit
Photo12/Africa Media Online
Notre référence
APN09A01_400
Utilisation
uniquement en France, Belgique, Suisse
Model release
Non
Licence
Droits gérés
Format disponible
10,6Mo (330,3Ko) / 20,0cm x 13,3cm / 2362 x 1571 (300dpi)