GS-I: Salient Features of World Physical Geography

Explain Madden-Julian oscillations and its difference from El-Nino? Discuss its impact on Indian monsoon.

September 21, 2023

Madden-Julian Oscillation is a system of cloud, wind and rain which keeps moving around the globe. Difference from El-Nino: El-nino originates in western coast of South America (East Pacific) and impacts global climate especially Indian Ocean Maiden-Julian oscillation moves around ..

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Thunderstorms, lightning and many such events are witnessed during Pre-monsoonal season in India. Explain their formation process and its impact on various regions of India.

September 19, 2023

Pre-monsoon season is from April to May in India. It is the precursor to the full onset of monsoon. Due to high-pressure over the Indian subcontinent, the moisture bearing winds are not attracted to the mainland. Process of Pre-monsoon rainfalls: ..

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The third pole of the earth not only important for geographical reasons but also for economic and civilizational aspects of the Indian Subcontinent. Explaining the importance of the region, examine the consequences of its changing features.

September 12, 2023

The Inner Himalayan region, along with Trans Himalayas and Hindukush mountains is often described as the third pole of the world owing to its crucial role in climate regulation and vast source of fresh water in form of glaciers. It ..

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How are plateaus formed? Also briefly discuss the features of the Deccan Plateau and its economic significance.

September 4, 2023

Plateau is a flat elevated landform which is higher than plains but not as high as mountains. Formation of Plateau: Volcanism produces lava plateau. Ex. Deccan Plateau formation. Crustal shortening – thrusting of one rock on other and folding of ..

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Explain the process of formation of a rift valley, emphasizing on the Great Rift Valley system.

September 3, 2023

Rift Valley is a depressed area between two adjacent highland areas. It is formed due to tectonic plates’ movement. They are found both on earth and under water. E.g. East African rift Valley, Narmada rift Valley. Process of Rift Valley ..

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Explain the formation of tropical cyclones. Also, illustrate the global distribution of these cyclones.

August 9, 2023

A tropical cyclone is a low pressure system over tropical or subtropical waters, with organised convection. The winds at lower level rotate clockwise (Southern Hemisphere) and anticlockwise (Northern Hemisphere). Formation of tropical cyclones: Conditions conducive for formation of tropical cyclones: ..

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