东中国海黑潮流域溶解氧和pH值分布特征探讨

DISTRIBUTION OF DISSOLVED OXYGEN AND pH IN KUROSHIO AREA OF EAST CHINA SEA

采用1989年5～6月中日合作黑潮调查资料,并结合同期东海断面调查资料,分析了调查区溶解氧和pH的空间分布特征及其相互关系。结果表明,溶解氧的分布为近岸高于外海,北部高于南部,表层高手底层。pH的表层分布为南部略高于北部,其值均在8. 3左右变化;底层的分布为近岸高、外海低,陆架区左侧在8. 2以上,主干区在8. 0左右,A_8站为最低。氧含量与温度、pH呈正相关,与营养盐呈负相关。经分析确证黑潮右侧的A_4站和同步的C_7站附近为上升流区。

The distribution of DO and pH value is approached in the aspects of coastal waters and open sea,north and south parts concerning the area in horizon range,and surface and bottom layers in vertical domain. The data came from Sino-Japan Joint Survey of Kuroshio and the routine section survey in the East China Sea by the Service. The oxygen content is positively related with temperature and pH but negatively with nutrient. It has been determined that there exists and upwelling around stations A4 and C7,both right side to Kuroshio.