Swell Waves

Published: 11th May, 2024

Context

Due to a potentially deadly swell of waves hitting the coastal regions, scientists have recommended a complete stoppage of all recreational activities along the coast and beaches of numerous states on India's eastern and western coasts.

What is a Swell wave?

The development of long wavelength waves on the ocean's surface is known as a These are made up of several waves of surface gravity.
Formation: These waves are caused by far-off storms like hurricanes or even extended periods of intense gale winds.
In India, early warning systems like the Swell Surge Forecast System, which was introduced by the Indian National Centre for Ocean Information Services (INCOIS) in 2020, provide information about the formation of extremely high waves.

Fact Box: About Waves

Waves are a surface disturbance in the ocean or sea that take the shape of a shifting swell or ridge.
Unlike tides, which are caused by the moon, waves are caused by the transfer of energy from the wind to the sea.
The wind causes friction on the sea's surface, which forms waves.

UPSC PYQ

Q. Tides occur in the oceans and seas due to which among the following? (UPSC 2015)

Gravitational force of the Sun

Gravitational force of the Moon

Centrifugal force of the Earth

Select the correct answer using the code given below.

1 only
2 and 3 only
1 and 3 only
1, 2 and 3

Solution: (d)

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Swell Waves

What is a Swell wave?

Fact Box: About Waves

UPSC PYQ

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