Impact du vent sur la transparence des eaux de la lagune de l'Ichkeul

Abstract

In the Ichkeul lagoon, the strong wind removes the particles and carries them in suspension because of the shallow water plan (about 1m, on an average). The most frequent wind blows from the West to the North-West sector. During spring and summer the amplitude of their speed fluctuations is moderate. On the contrary, it is pronounced in autumn and winter, a period of both weak and strong wind. The water transparency is evaluated by a Secchi disc. When the continental water supply and the wind turbulences are absent, the water of Ichkeul is clearear.