Consider the following statements regarding Tsunami 1 The wavelength of tsunami waves expand when it...........

Geography Disasters and Management issues

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Consider the following statements regarding Tsunami.

1.The wavelength of tsunami waves expand when it approaches towards the coast.

2.Height of the tsunami wave increases as it approaches the coast.

3.Islands with steep-sided fringing or barrier reefs are only at moderate risk from tsunamis.

How many of the statements given above are correct?

Only One

Only Two

All Three

None

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Explanation:

2 and 3 only

The wavelength of tsunami waves expands when it approaches towards the coast: This statement is not correct As a tsunami approaches the coast, the wavelength decreases, and the wave height increases. This phenomenon is known as wave shoaling.

Height of the tsunami wave increases as it approaches the coast: This statement is correct. As a tsunami wave enters shallower coastal waters, the wave undergoes shoaling, causing the wave height to increase.

Islands with steep-sided fringing or barrier reefs are only at moderate risk from tsunamis: This statement is correct. Islands with steep-sided fringing or barrier reefs can provide some level of natural protection from the impact of tsunamis. However, the degree of protection depends on various factors, including the size and intensity of the tsunami and the specific characteristics of the coastal environment.