【摘要】 测定了１９９７ 年７ 月份琉球群岛邻近海域的溶解有机碳（ＤＯＣ） ，发现ＤＯＣ的最高浓度存在于表层水中，为１６３μｍｏｌ／Ｌ，底层水ＤＯＣ的平均浓度为５０μｍｏｌ／Ｌ左右，最低为３９μｍｏｌ／Ｌ，且浓度相对保持恒定。黑潮北端ＤＯＣ的浓度要高于南端，研究认为东海是ＤＯＣ的一个源。更多还原

【Abstract】 Dissolved organic carbon was determined in seawater near the Ryukyu island in July of 1997 using the UV/persulphate method. DOC concentration was high in the surface layer, and the maximum value is 163μmol/L. The average concentration was about 50μmol/L in deeper water, and the minimum value is 39μmol/L. DOC in deep water kept constant. DOC was higher in the north of the Kuroshio than in the south, which means the East China Sea is a source of DOC.更多还原