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Dimictic lakes are holomictic
Holomictic

Holomictic lakes are non-meromictic lakes . Although the permanent ice-cover of amictic lakes prevents mixing, they are also regarded as being holomictic....
 lakes that mix from top to bottom during two mixing periods each year. During winter they are covered by ice. During summer they are thermally stratified, with temperature-derived density differences separating the warm surface waters (the epilimnion
Epilimnion

Epilimnion is the top-most layer in a thermally stratified lake, occurring above the deeper hypolimnion. It is warmer and typically has a higher pH and dissolved oxygen concentration than the hypolimnion....
), from the colder bottom waters (the hypolimnion
Hypolimnion

The hypolimnion is the dense, bottom layer of water in a thermally-stratified lake. It is the layer that lies below the thermocline.Typically the hypolimnion is the coldest layer of a lake in summer, and the warmest layer during winter....
). Mixing typically occurs during the spring and autumn, when the lake is "isothermal" (i.e., at the same temperature from the top to the bottom).






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Dimictic lakes are holomictic
Holomictic

Holomictic lakes are non-meromictic lakes . Although the permanent ice-cover of amictic lakes prevents mixing, they are also regarded as being holomictic....
 lakes that mix from top to bottom during two mixing periods each year. During winter they are covered by ice. During summer they are thermally stratified, with temperature-derived density differences separating the warm surface waters (the epilimnion
Epilimnion

Epilimnion is the top-most layer in a thermally stratified lake, occurring above the deeper hypolimnion. It is warmer and typically has a higher pH and dissolved oxygen concentration than the hypolimnion....
), from the colder bottom waters (the hypolimnion
Hypolimnion

The hypolimnion is the dense, bottom layer of water in a thermally-stratified lake. It is the layer that lies below the thermocline.Typically the hypolimnion is the coldest layer of a lake in summer, and the warmest layer during winter....
).
Lse Stratification
Mixing typically occurs during the spring and autumn, when the lake is "isothermal" (i.e., at the same temperature from the top to the bottom). At this time the water throughout the lake is about 4°C, and, in the absence of any temperature or density differences, the lake readily mixes from top to bottom. These lakes are common in regions with temperate climates.

See also

  • Amictic
    Amictic

    Amictic lakes are holomictic lakes that are permanently ice-covered. They are restricted to very cold climates .ReferencesSee also...
  • Holomictic
    Holomictic

    Holomictic lakes are non-meromictic lakes . Although the permanent ice-cover of amictic lakes prevents mixing, they are also regarded as being holomictic....
  • Meromictic
    Meromictic

    A meromictic lake has layers of water which do not intermix. In ordinary, "holomictic" lakes, at least once each year there is a physical mixing of the surface and the deep waters....
  • Monomictic
    Monomictic

    Monomictic lakes are holomictic lakes that mix from top to bottom during one mixing period each year. Monomictic lakes may be subdivided into two types:...
  • Polymictic
    Polymictic

    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....
  • Thermocline
    Thermocline

    The 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....


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