Consider the following statements:
1. Thermocline is a layer in the ocean from where there is a rapid decrease of temperature with increasing depth.
2. About 90 per cent of the total volume of water is found below the thermocline in the deep ocean.
3. Polar oceans generally have a more pronounced thermocline compared to Tropical oceans.

How many of the statements given above is/are correct?
(a) Only one
(b) Only two
(c) All three
(d) None

Question

Consider the following statements:
1. Thermocline is a layer in the ocean from where there is a rapid decrease of temperature with increasing depth.
2. About 90 per cent of the total volume of water is found below the thermocline in the deep ocean.
3. Polar oceans generally have a more pronounced thermocline compared to Tropical oceans.

How many of the statements given above is/are correct?
(a) Only one
(b) Only two
(c) All three
(d) None

ONLiNE UPSC · Accepted Answer

Statement 1 is correct: The thermocline is a layer in the ocean where the temperature decreases rapidly with depth. It's the transition layer between the warmer surface water and the cooler deep water.

Statement 2 is correct: Approximately 90% of the ocean's total volume lies below the thermocline in the deep ocean, where temperatures are relatively stable and cold.

Statement 3 is not correct: In the tropical oceans, temperature stratification is more pronounced due to the high levels of solar radiation that warms the surface layers of the water and leads to stratification, while polar regions lack a significant thermocline due to uniformly cold water throughout.

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Thermocline

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M Question 1	⏱ 0
Consider the following statements: 1. Thermocline is a layer in the ocean from where there is a rapid decrease of temperature with increasing depth. 2. About 90 per cent of the total volume of water is found below the thermocline in the deep ocean. 3. Polar oceans generally have a more pronounced thermocline compared to Tropical oceans. How many of the statements given above is/are correct? (a) Only one (b) Only two (c) All three (d) None