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1969年,由于电导盐度定义的确定,统一了电导测盐方法,在海水盐度测量方面取得了很大进展。但它并不完善,由勘Cox等人确立的电导盐度与相对电导率R_(15)的五阶多项式,实际上代表了具有各地区大洋海水的平均离子组成的海水的电导盐度与相对电导率的关系。这种关系式并不能精确地确定其离子组成与平均离子组成有明显差异的海水的电导盐度值,同时用它求海水比重也将产生一定的误差。这些偏差大小显然与待测
In 1969, due to the definition of conductivity salinity, the method of conductivity salt measurement was unified and great progress has been made in the salinity measurement of seawater. However, it is not perfect. The fifth-order polynomial of conductivity and relative conductivity R_ (15), established by Cox et al., Actually represents the conductivity of seawater with average ionic composition of oceanic seawater in each region and relative Conductivity. This relationship does not accurately determine the conductivity of seawater whose ionic composition is significantly different from that of the average ion composition. At the same time, it will also produce some errors in the determination of the proportion of seawater. The size of these deviations is clearly to be measured