mixolimnionn.
/ˌmɪksə(ʊ)ˈlɪmnɪən/, U.S. /ˌmɪksoʊˈlɪmniˌɑn/, /ˌmɪksoʊˈlɪmniən/ The freely circulating upper layer of a meromictic lake. Cf. monimolimnion n.
ΘΚΠ
the world > the earth > water > lake > [noun] > stratification according to temperature
stratification1860
epilimnion1910
hypolimnion1910
microstratification1931
metalimnion1935
mixolimnion1937
monimolimnion1937
1937 G. E. Hutchinson in Trans. Connecticut Acad. Arts & Sci. 33 74 A meromictic lake may be regarded as consisting of an upper region capable of complete mixture at the time of the overturn, and here called the mixolimnion, and a lower region not undergoing mixture at the overturn and termed by Findenegg the monimolimnion.
1950 Ecol. Monogr. 20 225/2 Hydrogen sulphide was found to be absent or nearly so in the potential zone of active mixing i.e. the mixolimnion or down to about the bottom of the thermocline.
1968 Limnol. & Oceanogr. 13 273 Both lakes are permanently stratified. The chemocline, separating the mixolimnion..from the monimolimnion.., lies at 18 m in Green Lake and at 24 m in Round Lake.
1984 Limnol. & Oceanogr. 29 564 The mixolimnia contain waters with an isotopic signal..coherent with the values for precipitation in these high latitudes.
1994 Chem. Geol. 115 110/1 The advection velocity is from the bottom to the top of the layer, which is consistent with the upflow from monimolimnion to the mixolimnion derived from the tritium results.
This entry has been updated (OED Third Edition, September 2002; most recently modified version published online March 2022).
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n.1937