Answer:
The term Tsunami means harbour wave. They can be represented as a wave series and the feature that distinguishes such waves is their long wavelength.
Tsunamis should not be mistaken with the wave produced by massive winds. A wind-generated wave persists for a few seconds, while Tsunami persists for minutes to hours. Tsunamis may be extremely damaging, which is not the wave generated by wind.
How Tsunamis generated?
- Earthquakes cause tsunamis.
- It should be observed that the sea floor’s vertical movement can produce these.
- Landslides may also cause tsunamis and even volcanic activity.
How often do Tsunamis occur?
- On average, a tsunami occurs in the Pacific Ocean every 15 years.
- An example to take from India itself that was the Indian Coast tsunami on 26 Dec 2004.
- It has caused immense damage to life and property.
Steps TO Mitigate
- Efficient Management
- Construction of walls as per Japan.
- Planting trees by a village as a don in Tamil Nadu
- Intense preparation for recovery and rehabilitation
- Awareness among the masses