【摘要】 <正> 一、前言为了确定海中污染物的扩散和海流结构特征之间的关系,需要进行海洋混合扩散实验,用某种易于检测的示踪物代替污染物,通过测量示踪物在海域内的时间、空间的浓度分布来确定污染物质的稀释扩散过程。荧光示踪染料——罗丹明B是一种最适宜的示踪物,它易溶于水、无毒、价廉,并且在非常低的浓度下都可以在海水中检测到。因此,荧光示踪的方法目前广泛地应用于海洋混合弥散的研究中。为了确保检测精度和对更多还原

【Abstract】 We have developed and used the "LGC2-1A" underwater fluorometer to investigate marine admixture and diffusion. The construction and working principle of the fluorometer are introduced in this paper. In order to test towed speed, resistant ability to the external world disturbing light and diffusion characteristic of sea water, the experiments have been made first by the instrument in the coastal off Qingdao.The results show that the instrument can work at any sunlight intensity at depth 0 to 50 meters, at speed 0 to 6 knots, his detectability for water solution of Rhodamine B is 1×10^-10g/ml to 1×10^-6g/ml. It is an ideal instrument to study statistical characteristic of radom diffusion processes.更多还原