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From: jwm@stdc.jhuapl.edu (Jim Meritt)
Newsgroups: sci.bio,sci.misc,sci.research
Subject: Re: The Loch Ness Monster
Keywords: Nessie Loch Ness passages
Message-ID: <1507@aplcomm.jhuapl.edu>
Date: 3 Aug 88 01:21:35 GMT
References: <861@altger.UUCP> <31293@cca.CCA.COM> <2160@alliant.Alliant.COM> <34997@aero.ARPA> <7481@cit-vax.Caltech.Edu>
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Reply-To: jwm@aplvax.UUCP (Jim Meritt)
Organization: JHU-Applied Physics Laboratory
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In article <7481@cit-vax.Caltech.Edu> wen-king@cit-vlsi.UUCP (Wen-King Su) writes:
}While I do not believe in the existence of the monster, a underwater
}passage to the sea cannot be ruled out because sea water is heavier
}than fresh water.  Since I have no idea what the density of the sea
}water is, lets assume that sea water is twice as heavy as fresh water
}(to make math simple).  If one unit volume of sea water is twice as
}heavy as one unit volume of fresh water, then the loch can be 52
}feet above sea level if there is a hole 52 feets below the sea level.
}At that spot, the pressure in sea and the loch is the same.  The lake
}water will remain fresh if there is a steady outflow of water through
}the passage.


Sea water is "heavier" (denser) than fresh water.

at 4 degrees C & 32ppt (not uncommon salinity) it is around 1.025 or so.
Even at 37 ppt (high) you don't get much above 1.03.

Not that big a density difference.

And IF you had a drain, the water would go down it until the hydrostatic
pressures matched.  Not 52 feet.


Disclaimer: Individuals have opinions, organizations have policy.
            Therefore, these opinions are mine and not any organizations!
Q.E.D.
jwm@aplvax.jhuapl.edu 128.244.65.5  (James W. Meritt)