Question

What do you mean by Southern Oscillation? Mention the feature connected with it.


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Answer 1

the El Nino

Explanation:

• Southern oscillation refers to shifting the surface air pressure between the tropical eastern Pacific and eastern Indian ocean

Answer 2

Answer:

Solution

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(i) Usually while the tropical eastern South Pacific Ocean experiences high pressure, the tropical Eastern Indian Ocean experiences low pressure. But in certain years, there is a reversal in the pressure conditions and the eastern Pacific has lower pressure in comparison to the eastern Indian Ocean. This periodic change in pressure conditions is known as the Southern Oscillation.

(ii) An important feature connected with the Southern Oscillation (SO) is the El Nino, a warm ocean current that flows past the Peruvian coast, in place of the cold Peruvian current, every 2 to 5 years. The changes in pressure conditions are connected to the El Nino. Hence, the phenomenon is referred to as ENSO (El Nino Southern Oscillations).