GEOLOGY

EARTH SCIENCE

LIMNOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of these yearly cycles is correct?
A
summer stratification, fall turnover, winter stratification, spring turnover
B
summer turnover, fall stratification, winter turnover, spring stratification
C
summer stratification, fall stratification, winter turnover, spring turnover
D
summer turnover, fall turnover, winter stratification, spring stratification
Explanation: 

Detailed explanation-1: -Updated On: 27-06-2022 upper most warm layerThermocline of a lake is called epilimnion. Below the epilimnion Hypolimnion there is a zone in which the temperature decreases at the rate of 1∘C per meter in depth, and it is called Summer stratification in a lake thermocline or metalimnion.

Detailed explanation-2: -“When layers mix and change places, a lake is said to turn over. Turnover occurs when water in an upper layer is heavier, or denser than the layer of water underneath it.” When temperatures either begin to cool off or significantly warm up during a change of seasons, the turnover process takes place.

Detailed explanation-3: -Relationships from the data show a shortened winter season results in higher subsurface temperatures and earlier onset of summer stratification. Shifts in the thermal regimes of large lakes will have profound impacts on the ecosystems of the world’s surface freshwater.

Detailed explanation-4: -Epilimnion– The upper layer of warmer water. Metalimnion – The middle layer with a zone of gradual decrease in temperature. Hypolimnion-The bottom layer of colder water.

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