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    Re: Noisy Sea Surface
    From: Steven Wepster
    Date: 2003 Nov 17, 10:54 +0100

    I have heard popping-bubbling-clicking sounds two months ago in the
    Oosterschelde, an inlet quite well known for its sea life, especially
    crustacea. I was at anchor for one and a half day. The sounds were heard
    invariably around the time of low water, during less than one hour (maybe
    half of that). Night and day alike, but only at low water. The sounds were
    best heard below deck through the hull. I do not clearly remember if they
    could be heard from deck too. From deck I could see bubbles surfacing all
    around, not only in the vicinity of the boat.
    Because the sounds were made during such a short time interval, I do not
    believe that they were triggered by the pressure excerted by the water on
    the sea bed. During that short interval the rise and fall of the water is
    very small compared to the difference between spring and neap tides. I
    would rather say that they were triggered by the standstill of the tidal
    I have not been a regular visitor of the area for years, so unfortunately I
    can not say if the phenomenon is regular, seasonal, or infrequent.

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