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Calculating density using temp. and salinity?

  1. Feb 12, 2010 #1
    Hi
    Does anyone know how to work out the density of water using just the temperature and the salinity?
    There must be a formula as I've found a few sites that do the conversion for you but I need the actual formula.
    Any help at all is appreciated thanks
     
  2. jcsd
  3. Feb 12, 2010 #2
    Maybe not much help but my web browser allows me to view the web page source which for the following page has the formula as part of the web page:

    from

    http://www.csgnetwork.com/h2odenscalc.html


    function rhoscalc (rho,conc,temp) { // temp and conc dependent density

    var rhos, A, B, temp;

    A = 0.824493 - 0.0040899*temp + 0.000076438*Math.pow(temp,2)-0.00000082467*Math.pow(temp,3) + 0.0000000053675*Math.pow(temp,4);

    B = -0.005724 + 0.00010227*temp - 0.0000016546*Math.pow(temp,2);

    rhos = rho + A*conc + B*Math.pow(conc,(3/2)) + 0.00048314*Math.pow(conc,2);

    return rhos;

    }


    You might be able to reverse engineer the formula you need?
     
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