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Having determined the properties of the modified water-masses in the light of the relative value and seasonal variation of temperature-salinity, we have, according to the TS-comparison method, used the stepwise cluster analysis method to determine the monthly water-masses at the surface and the bottom layers in the Huanghai Sea from 1978 to 1980. The advantages and disadvantages of the method and the relationship between the fishing grounds and the water-masses are discussed in this paper.
Having determined the properties of the modified water-masses in the light of the relative value and seasonal variation of temperature-salinity, we have, according to the TS-comparison method, used the stepwise cluster analysis method to determine the monthly water-masses at the surface and the bottom layers in the Huanghai Sea from 1978 to 1980. The advantages and disadvantages of the method and the relationship between the fishing grounds and the water-masses are discussed in this paper.