摘要
利用颗粒态放射性核素携带的颗粒物历经过程信息,我们提出用泥沙扩散方程和颗粒态放射性核素扩散方程联解底部边界层颗粒态物质迁移参数的方法。分析实例的样品取自荷兰Waden Sea南部Balgzand潮滩(砂坪)和Mok湾潮滩(泥坪)的两个站位(BG1和Mok2)。示踪核素为^(234)Th,^(210)Pb和^(137)Cs,其放射性比度由r能谱测出。
The parameters of particulate matter transportation in the boundary layer of coastal system, including the vertical diffusion coefficient, the mass settling velocity and the scavenging rate, could be estimated from the vertical structure both of suspended sediment and particulate radioisotopes tracers by their diffusion equations. The profiles of 234Th, 210Pb and 137Cs in the tidal flats of the Wadden Sea are selected and discussed as an exmample for this method.
出处
《海洋科学》
CAS
CSCD
北大核心
1992年第4期66-68,共3页
Marine Sciences
基金
中荷潮滩沉积作用合作研究项目
关键词
边界层
颗粒态物质
放射性核素
Boundary layer, Particulate matter, Radioisotopes, Diffusion equation
