一、引言 海水的比重是海水的一个重要物理性质,也是研究海水运动所必需的一个参数。关于大洋海水比重及其与氯度、盐度和电导的关系已有许多报导,为了制定新的国际海洋学常用表,Cox等人对世界各海洋表层海水的比重、盐度和温度的关系又进行了重新研究。他们指出,除去低盐海水以外,所得结果与Knudsen水文表数据吻合较好,但Knudsen水文表的比重数据平均偏低0.006σ_t。 对于中国沿海海水比重的直接测定工作,至今还没有见到报告。我国务濒临海区海水 I. INTRODUCTION The proportion of seawater is an important physical property of seawater and a parameter necessary for studying seawater movement. There has been much talk about the proportion of ocean seawater and its relationship with chlorinity, salinity and electric conductivity. In order to make a new international table for oceanography, the relationship between the proportion of saltwater and temperature in Cox et al. A new study was conducted. They point out that the results obtained are in good agreement with the Knudsen hydrological data except for the low-salt seawater, but the Knudsen hydrograph has a mean low 0.006σ_t on average. No direct report has been made on the direct determination of the proportion of seawater in China’s coastal areas. My counsel is on the verge of sea water