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SURGE PRONE COASTS OF INDIA

 

Storm surge heights depend on the intensity of the cyclone, i.e., very high-pressure gradient and consequent very strong winds and the topography of seabed near the point where a cyclone crosses the coast. Sea level also rises due to astronomical high tide. Elevation of the total sea level increases when peak surge occurs at the time of high tide.

Vulnerability to storm surges is not uniform along Indian coasts. The following segments of the east coast of India are most vulnerable to high surges

i) North Orissa, and West Bengal coasts.

ii) Andhra Pradesh coast between Ongole and Machilipatnam.

iii) Tamil Nadu coast, south of Nagapatnam.

The West coast of India is less vulnerable to storm surges than the east coast of India in terms of both the height of storm surge as well as frequency of occurrence. However, the following segments are vulnerable to significant surges :

i) Maharashtra coast, north of Harnai and adjoining south Gujarat coast and the coastal belt around the Gulf   of  Bombay.

ii) The coastal belt around the Gulf of Kutch.

 

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