Winter stratification - thermal stratification, Biology

Assignment Help:

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.


Related Discussions:- Winter stratification - thermal stratification

Define photoorganoheterotrophs and chemoorganoheterotrophs, Photoorganohete...

Photoorganoheterotrophs and Chemoorganoheterotrophs - Nutritional Types (1) Photoorganoheterotrophs - These microorganisms use light as a source of energy and organic compound

Can you illustrate the cell division process, Q. What is the cell division ...

Q. What is the cell division process directly related to the embryonic growth? The embryonic growth depends directly on mitosis Through this kind of cell division the zygote di

Explain microbiology of water, Q. Explain microbiology of water? Ans. ...

Q. Explain microbiology of water? Ans. Unlike air, natural waters contain their natural flora, as well as, microorganisms from soil and possibly from animals and se

Excretion in cockroach, EXCRETIO N IN COCKROACH- Animal is uricotelic....

EXCRETIO N IN COCKROACH- Animal is uricotelic. Excretory organs are malphighian tubules. 60-150 in 6-8 groups. In each group 10-15. Yellow coloured, blind tube, open in gut

Dietary management of constipation, Q. Dietary Management of Constipation? ...

Q. Dietary Management of Constipation? Management of constipation lies in developing regularity of habit through a bowel- training programme and by establishing good healthy ha

Triple fusion, Triple Fusion The fusion process between the other male...

Triple Fusion The fusion process between the other male gamete and the secondary nucleus follows the same pattern as syngamy. In most plants, the polar nuclei are only partial

Define regulation and excretion of sodium and chloride, Define Regulation a...

Define Regulation and Excretion of sodium and chloride? Renal excretion and retention of these elements is closely regulated. The total content of body sodium especially the co

What are pericardium - pleura and peritoneum, Q. What are pericardium, pleu...

Q. What are pericardium, pleura and peritoneum? Pleura are the membrane that covers the inner wall and the lungs of the chest pericardium are the membrane that covers the heart

Pumps, The pumps The blood from the operating field is sucked with t...

The pumps The blood from the operating field is sucked with the help of the cardiotomy sucker and pump, which is filtered to remove all particulate matter and then pass

Nonsurgical retreatment -secondary endodontic ttt, Nonsurgical retreatment ...

Nonsurgical retreatment (secondary endodontic ttt ) -Is the main difference between primary endodontic disease versus post treatment disease is the need to Regain access to

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd