厦门浔江湾水体交换的^(224)Ra和~2H示踪研究  

Water mixing characteristics of Xunjiang Bay, Xiamen based on ^(224) Ra and ~2H tracers

作　　者：蔡明刚[1] 陈敏[1] 蔡毅华[1] 高众勇[1] 邱雨生[1] 黄奕普[1] 

机构地区：[1]厦门大学海洋系,厦门361005

出　　处：《台湾海峡》2000年第2期157-162,共6页Journal of Oceanography In Taiwan Strait

基　　金：福建省自然科学基金!(D970 0 2号 );高等学校博士学科点专项科研基金!(980 3840 8号 )

摘　　要：本文研究了 980 32 6航次厦门浔江湾海水中2 2 4Ra和2 H的含量与分布 ,揭示其水体交换特征。表层水体中2 2 4Ra的放射性比度介于 4.94～ 1 3.70Bq/m3之间 ,平均值为 7.2 6Bq/m3 ;δD测值介于 - 8.9× 1 0 -3 ～ - 5 .7× 1 0 -3 之间 ,平均值为 - 7.3× 1 0 -3 。表层水2 2 4Ra和2 H的分布表明 ,浔江湾在一定程度上受到西港水的入侵 ,湾内外水体的不完全交换造成外海水在该湾中部的滞留。The concentrations and distributions of 224 Ra and 2H in Xunjiang Bay, Xiamen during 980326 cruise were studied to reveal the characteristics of water mixing. Specific activities of 224 Ra in the surface waters varied from 4.94 to 13.70 Bq/m 3,averaged 7.26 Bq/m 3.The δD values varied from -8.9×10 -3 to -5.7×10 -3 and the average was -7.3×10 -3 .Based on the distribution pattern of 224 Ra and 2H in the surface water, some important hydrological characteristics were revealed. Xunjiang Bay is to a certain degree intruded by the inflow water of western Xiamen Harbour. Furthermore, in the centre of Xunjiang Bay, there is some high salinity, high δD and low 224 Ra waters, which revealed the outside waters detained in the centre of the Bay, by incomplete water mixing between inside and outside.

关 键 词：水休交换 厦门浔江湾 镭224 氢2 

分 类 号：P736.45[天文地球—海洋地质]