Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective of a lake Having layers of water that do not intermix.

Etymologies

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Examples

  • Extreme clinograde oxygen distributions occur in meromictic lakes where the monimolimnion may have permanent oxygen deficits.

    Chemical properties of lakes 2008

  • Mineralogical studies of the impact crater near Mount Darwin are being conducted by the University of Tasmania, as are limnological studies of meromictic and other lakes.

    Tasmanian Wilderness, Australia 2008

  • Three meromictic lakes on the Lower Gordon River, of international repute for being permanently stratified and yet relatively shallow, are inhabited by diverse and unusual aquatic micro-organisms.

    Tasmanian Wilderness, Australia 2008

  • Ellesmere Island contains a range of unique aquatic ecosystems: ice shelves, epishelf lakes, meromictic lakes and tundra ponds.

    Ayles Ice Shelf, Ellesmere Island « Climate Audit 2007

  • To better understand the paleoclimatic signal in the sediments, a three year process-based study is planned to determine the primary controls on sediments flux and varved sediment formation in Sophia Lake, a High Arctic hypersaline, meromictic lake.

    Bradley's Data Archiving « Climate Audit 2005

  • Opposite to most inland waters, Lake Cadagno is permanently stratified (meromictic).

    innovations-report 2008

  • Opposite to most inland waters, Lake Cadagno is permanently stratified (meromictic).

    innovations-report 2008

  • Opposite to most inland waters, Lake Cadagno is permanently stratified (meromictic).

    innovations-report 2008

  • In fact, the actual Black Sea is the world's largest meromictic basin.

    Knox 2008

Comments

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  • 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. This mixing can be driven by wind, which creates waves and turbulence at the lake's surface, but wind is only effective at times of the year when the lake's deep waters are not much colder than its surface waters. In a "monomictic" lake, this mixing occurs once a year; in "dimictic" lakes, the mixing occurs twice a year (typically Spring and Autumn), and in "polymictic" lakes the mixing occurs several times a year. In meromictic lakes, the layers of the lake water remain unmixed for years, decades, or centuries.

    Occasionally carbon dioxide (CO2) or other dissolved gasses can build up relatively undisturbed in the lower layers of a meromictic lake. When the stratification is disturbed, as could happen due to an earthquake, a limnic eruption may result.

    _Wikipedia

    February 11, 2008

  • (And the property's called meromixis!)

    September 3, 2008