Winter stratification - thermal stratification, Biology

Winter Stratification - Thermal stratification

During extremes of winter the surface layer of the lake freezes or attains a temperature close to 0° Celsius. Under these conditions an inverse stratification develops. The water beneath the ice absorbs solar radiation passing through the ice and so remains relatively warm. When this warm water attains a temperature of 4°C it becomes dense and heavier. Consequently it sinks to the bottom where it mixes with bottom water of the lake which is warmed by heat conducted from the bottom mud. The result is higher temperature at the bottom, though the overall stability of water remains undisturbed.

That is, the less dense-surface water in the form of ice or at 0°C floats on the top of the warm, heavier water which is at an appropriate temperature of 4°C. Both of these layers remain stratified and do not mix during the winter season so that the lake is said to have undergone, winter stagnation or stratification.

Posted Date: 1/19/2013 4:35:05 AM | Location : United States







Related Discussions:- Winter stratification - thermal stratification, Assignment Help, Ask Question on Winter stratification - thermal stratification, Get Answer, Expert's Help, Winter stratification - thermal stratification Discussions

Write discussion on Winter stratification - thermal stratification
Your posts are moderated
Related Questions
Explain about the Kwashiorkor - protein energy malnutrition? Kwashiorkor is an African word, meaning a "disease of the displaced child", who is deprived of adequate nutrition.

What are some examples of biological activities in which osmosis plays an important role? Hemolysis (destruction of red blood cells) by entrance of water, the hydric regulation

Things to do-  We ought to aide by earthquake resisting building codes during construction and retrofitting of existing buildings. We should have a first AID box handy and learn

Describe about Mixed Type of TA PVC ? Management depends upon the type of TAPVC and could be very challenging. However the basic principle is to get all the pulmonary veins to

Define role of Lipids in Controlling Gene Expression? In the lipogenic pathway, the genes that encode the enzymes of the fatty acid synthase complex are co-ordinately expressed

Assume that after washing your hands, you leave ten bacteria cells on a new bar of soap. You then decide to do a plate count of the soap after it was left in the soap dish for 24 h

e use itwhat is difference between peroxisme and lysosome what is function of it and where w

If the titration is done by adding NaOH to a solution containing 2.661 moles of lysine, how many milliliters (mL) of a 5 M solution of NaOH would you have to add to reach point "E"

Explain Intubation and Ventilation ? If supplemental oxygen therapy or non-invasive ventilation do not help, the next step would be to intubate and commence mec

STRESS OF HOSPITALIZATION   Stress refers to the imbalance between the environmental  and societal demands and the child's coping abilities  and resources that puts  them in a