### Abstract

In an attempt to determine a reliable equation of state of seawater, the authors studied the pvt properties of seawater. The relative density (d minus d//0) of diluted and evaporated standard seawater solutions have been determined at one atmosphere with a magnetic float densimeter and a suspension balance from 0. 5 to 40% salinity and 0 to 40 degree C. The resulting densities (d) have been fitted to an equation of the form (std. dev. 3. 3 ppm) d equals d//o plus A S(%) plus B S(%)**3**/**2 plus C S(%)**2 where d//o is the density of water, S(%) is the salinity in parts per thousand and A, B, C are temperature dependent parameters. The smoothed densities have been compared to the results of other workers. These results confirm the findings of earlier workers that the densities of Knudsen for 35% salinity seawater are too low by (8. 7 plus or minus 1. 0) multiplied by 10** minus **6 from 0 to 25 degree C.

Original language | English (US) |
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Pages (from-to) | 61-93 |

Number of pages | 33 |

Journal | Journal of Marine Research |

Volume | 34 |

Issue number | 1 |

State | Published - Jan 1 1976 |

### ASJC Scopus subject areas

- Oceanography

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## Cite this

*Journal of Marine Research*,

*34*(1), 61-93.