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Thread: Does anyone know anything about tsunami's

  1. #1 Does anyone know anything about tsunami's 
    Forum Professor leohopkins's Avatar
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    Can anyone tell me what actually causes the phenomenon of "drawback" just before a tsunami occurs ?

    Thanks


    The hand of time rested on the half-hour mark, and all along that old front line of the English there came a whistling and a crying. The men of the first wave climbed up the parapets, in tumult, darkness, and the presence of death, and having done with all pleasant things, advanced across No Man's Land to begin the Battle of the Somme. - Poet John Masefield.

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  3. #2  
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    Waves on the surface of a liquid are a series of peaks and troughs. The drawback occurs when a trough reaches the coast, and a tsunami when a peak arrives.


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    Forum Professor leohopkins's Avatar
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    Kind of makes sense, although wouldnt there be any occassions when the peak hits before the trough ?
    The hand of time rested on the half-hour mark, and all along that old front line of the English there came a whistling and a crying. The men of the first wave climbed up the parapets, in tumult, darkness, and the presence of death, and having done with all pleasant things, advanced across No Man's Land to begin the Battle of the Somme. - Poet John Masefield.

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  5. #4  
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    Yes. Drawbacks don't always occur.
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  6. #5  
    Forum Professor leohopkins's Avatar
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    Okay. Thanks
    The hand of time rested on the half-hour mark, and all along that old front line of the English there came a whistling and a crying. The men of the first wave climbed up the parapets, in tumult, darkness, and the presence of death, and having done with all pleasant things, advanced across No Man's Land to begin the Battle of the Somme. - Poet John Masefield.

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