overturn (limnology)

overturn (limnology)

Zirkulation vuelque (limnologĂ­a) brassage convectif

Definition

The circulation, especially in the fall and spring, of the layers of water in a lake or sea, whereby surface water sinks and mixes with bottom water; it is caused by changes in density differences due to changes in temperature, and is especially common wherever lakes are icebound in winter.

Broader terms

Lakes, hydrologic cycle