With reference to the thermocline consider the following statements 1 ...........

Geography World - Water Bodies

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With reference to the thermocline, consider the following statements:

1. It is the boundary region below sea level where temperature uniformly decreases with increasing depth.

2. About 90 per cent of the total volume of water is found below the thermocline in the deep ocean.

Which of the statements given above is/are incorrect?

1 only

2 only

Both 1 and 2

Neither 1 nor 2

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Explanation:

-The temperature-depth profile for the ocean water shows how the temperature decreases with the increasing depth. The profile shows a boundary region between the surface waters of the ocean and the deeper layers.

-The boundary usually begins around 100 - 400 m below the sea surface and extends several hundred of m downward.This boundary region, from where there is a rapid decrease of temperature, is called the thermocline.

-About 90 per cent of the total volume of water is found below the thermocline in the deep ocean. In this zone, temperatures approach 0° C.

-The second layer called the thermocline layer lies below the first layer and is characterised by rapid decrease in temperature with increasing depth. The thermocline is 500 -1,000 m thick.