Polymictic
Encyclopedia
Polymictic lakes are holomictic
lakes that are too shallow to develop thermal stratification; thus, their waters can mix from top to bottom throughout the ice-free period. Polymictic lakes can be divided into cold polymictic lakes (i.e., those that are ice-covered in winter), and warm polymictic lakes (i.e., polymictic lakes in regions where ice-cover does not develop in winter).
Holomictic
Holomictic lakes are lakes, which, at some time during the year, have a uniform temperature and density from top to bottom, allowing the lake waters to completely mix. Holomictic lakes are non-meromictic lakes....
lakes that are too shallow to develop thermal stratification; thus, their waters can mix from top to bottom throughout the ice-free period. Polymictic lakes can be divided into cold polymictic lakes (i.e., those that are ice-covered in winter), and warm polymictic lakes (i.e., polymictic lakes in regions where ice-cover does not develop in winter).
See also
- AmicticAmicticAmictic lakes are holomictic lakes that are permanently ice-covered. They are restricted to very cold climates .-See also:* Dimictic lake* Holomictic* Meromictic* Monomictic* Polymictic* Thermocline...
- HolomicticHolomicticHolomictic lakes are lakes, which, at some time during the year, have a uniform temperature and density from top to bottom, allowing the lake waters to completely mix. Holomictic lakes are non-meromictic lakes....
- MeromicticMeromicticA meromictic lake has layers of water that do not intermix. In ordinary, "holomictic" lakes, at least once each year there is a physical mixing of the surface and the deep waters...
- MonomicticMonomicticMonomictic lakes are holomictic lakes that mix from top to bottom during one mixing period each year. Monomictic lakes may be subdivided into Cold and Warm types.-Cold monomictic lakes:...
- Dimictic lakeDimictic lakeDimictic lakes are lakes that mix from top to bottom during two mixing periods each year. Dimictic lakes are holomictic, a category which includes all lakes which mix one or more times per year. During winter they are covered by ice...
- ThermoclineThermoclineA thermocline is a thin but distinct layer in a large body of fluid , in which temperature changes more rapidly with depth than it does in the layers above or below...