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    Dear teachers,

    Would you be kind enough to explain to me in plain English the meaning of the expression in bold in the following excerpt from the article “Storm battering southern Britain”?

    “Craig Woolhouse, head of flood defenses at the Environment Agency, told the BBC a combination of weather conditions - including heavy rain, snow melt and "tide-locking" of rivers caused by high tides - was causing the flooding in southern England.”

    I’m sure that we have to accept some plausible interpretation bounded to the mutual rotating of the Earth and the Moon as well as to the producing of the tidal force as a result of the gravitational attraction between them. But, what is your opinion about the term "lock" = "water-gate"or "blocking"/"clogging""engorgement"?

    Thank you for your efforts.


    Last edited by vil; 10-Feb-2009 at 13:34.

    • Join Date: Feb 2009
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    Re: tide-locking

    I am not a meteorologist so I cant be certain.

    The mouth of a river, at the sea, is subject to the rise and fall of the tides. If the rivers flow is insufficient, then the rising tide water causes the river to reverse its flow, it is flowing inland from the sea.

    So, I assume he means that the swollen volume of water in the river met the rising tide and so was unable to escape into the sea, which caused it to flood onto the land.

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