why does a tsunami NOT break when it approaches a coast?

a. the wave is so fast, it never reaches the height where it is unstable

b. the wavelength is so long, it never reaches the height where it is unstable

c. tsunamis do not slow down when they approach the shore

d. the wave already broke when it reached the shelf break

i was thinking c but i read on the internet something about the wavelength so now im not sure which to put. (if either of those are right)

4 Answers

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  • 1 decade ago
    Favorite Answer

    Super position of waves can make huge waves. Actually, all of the above may be true in some situations. However, if the the wave moves in a certain direction common tidal generated waves may cause huge super waves . The shallow beaches are a cause for waves to break. a deep drop in near shore then long coastal plain gives no protection to long wave shallow amplitude waves. For some strange reason waves come together in tetrahedral pyramids in the deep sea. Rouge waves spring up from super position in deep sea out of no-where

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  • 1 decade ago

    B.

    The wavelength of a tsunami is very long and it acts more like a surge than a breaking wave.

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  • Anonymous
    1 decade ago

    e. the tsunami is strengthened towards the coast.

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  • 1 decade ago

    B

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