Monomictic lake

Monomictic 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

Cold monomictic lakes are lakes that are covered by ice throughout much of the year. During their brief "summer", the surface waters remain at or below 4°C. The ice prevents these lakes from mixing in winter. During summer, these lakes lack significant thermal stratification, and they mix thoroughly from top to bottom. These lakes are typical of cold-climate regions (e.g. much of the Arctic).[1]

Warm monomictic lakes

Warm monomictic lakes are lakes that never freeze, and are thermally stratified throughout much of the year. The density difference between the warm surface waters (the epilimnion) and the colder bottom waters (the hypolimnion) prevents these lakes from mixing in summer. During winter, the surface waters cool to a temperature equal to the bottom waters. Lacking significant thermal stratification, these lakes mix thoroughly each winter from top to bottom. These lakes are widely distributed from temperate to tropical climatic regions.[1] One example is South Australia's Blue Lake, where the change in circulation is signaled by a striking change in colour.

Examples of monomictic lakes

gollark: General-purpose user-reprogrammable computing is slowly dying out and it isn't possible to do very much about it.
gollark: Inb4 your eyes automatically filter out any content someone deems objectionable and you can't change it because something something "trusted computing".
gollark: Important internet infrastructure was designed and put into production last millennium when people assumed private networks and just ignored security concerns, and we still run it, sometimes with patches for the bigger problems which aren't actually anywhere near universally deployed.
gollark: Oh, and it's all a giant maze of interlocking abstraction layers which manage to somehow erase decades of Moore's law because someone wanted to ship an entire browser for their desktop app or something, and which nobody actually understands.
gollark: Even the lowest level hardware stuff is vulnerable to weird exotic side channels, there's unauditable proprietary code running lots of stuff, and even outside of that people just cannot seem to write consistently secure code.

See also

References

  1. William M. Lewis Jr. (1983). "A revised classification of lakes based on mixing" (PDF). Canadian Journal of Fisheries and Aquatic Sciences. 40 (10): 1779–1787. doi:10.1139/f83-207. Archived from the original (PDF) on 2009-03-06.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.