Discuss about the vulnerability of India to earthquake-related hazards. Give examples including the salient features of major disasters caused by earthquakes in different parts of India during the last three decades. (UPSC 2021, 10 Marks, )

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India is highly vulnerable to earthquake-related hazards due to its location in a seismically active zone. The country is situated on the Indian Plate, which is colliding with the Eurasian Plate, resulting in frequent seismic activity.

Susan Hough focused on the social and psychological aspects of earthquakes, highlighting the need for effective communication and preparedness measures to reduce the societal impacts of earthquakes.

John Tuzo Wilson developed the Plate Tectonics Theory, focusing on the movement of Earth's lithospheric plates. He explained how earthquakes occur at plate boundaries.

Vulnerability of India to earthquake-related hazards

•   Tectonic activity: India is located in a seismically active region due to the collision of the Indian and Eurasian tectonic plates, making it prone to earthquakes.

•   High population density: India has a large population concentrated in urban areas, which increases the vulnerability to earthquake hazards.

•   Poorly constructed buildings: Many buildings in India, especially in rural areas, are not constructed to withstand earthquakes, making them susceptible to collapse during seismic events.

•   Lack of awareness and preparedness: There is a lack of awareness and preparedness among the general population regarding earthquake safety measures, evacuation plans, and early warning systems.

•   Infrastructure vulnerabilities: Critical infrastructure such as hospitals, schools, and transportation networks may not be designed or retrofitted to withstand earthquakes, leading to severe damage and disruption.

•   Geological diversity: India's diverse geological features, including mountains, plains, and coastal areas, contribute to varying levels of vulnerability to different types of earthquake hazards.

•   Climate change impact: Climate change can potentially exacerbate the vulnerability to earthquake hazards by altering the stress patterns on faults and increasing the frequency and intensity of extreme weather events.

Examples of major earthquakes in India and Salient features

•   Bhuj earthquake (2001): A devastating earthquake of magnitude 7.7 struck the Kutch region in Gujarat, resulting in the loss of thousands of lives and causing extensive damage to infrastructure. The disaster highlighted the need for better construction practices and disaster preparedness.

•   Latur earthquake (1993): It exposed the vulnerability of poorly constructed buildings, leading to a high number of casualties. It emphasized the importance of enforcing building codes and retrofitting structures.

•   Uttarakhand earthquake (1991): It caused landslides and avalanches, resulting in significant damage to infrastructure and loss of life. It highlighted the need for improved slope stability measures and early warning systems in mountainous regions.

•   Sikkim earthquake (2011): The earthquake in Sikkim affected remote areas, making rescue and relief operations challenging. It underscored the importance of strengthening infrastructure and improving accessibility to remote regions for effective disaster response.

•   Assam earthquake (1950): It caused extensive damage to infrastructure, including bridges and roads, hampering rescue and relief efforts. It emphasized the need for resilient infrastructure and efficient transportation networks in earthquake-prone regions.

India's vulnerability to earthquake-related hazards is a significant concern due to its location in a seismically active zone. It is crucial for India to focus on improving infrastructure resilience, implementing effective disaster management strategies, and raising awareness among the population to mitigate the impact of future earthquakes.