Sunday, July 26, 2009

The truth about what goes into the Sound

You know I have been doing a significant study with Art Glowka on the discharges from treatment plants.
What I am beginning to understand is how the Sound does and does not mix with the fresh water coming from shore.
The pH reading surprised a bunch of PhD's at the Marine Fisheries Division of NOAA.
I decided to test a theory put to me by Art, that the lower pH was because the fresh water was not mixing with the Sound water because of its salinity. He was right on the money. chloride levels and pH do have a great deal of correlation.
Not a real surprise there, but it gave me a number of good ideas and one was that pH might be useful at predicting fresh water intrusion (and thus bacterial pollution) at beaches.
Another was even tho the 2 do not mix well, the nutrient load from fresh water is rapidly absorbed into the Sound and used up.
That is an important concept and one not widely accepted by anyone.
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