海洋四水团混合的定量化分析和方法比较及其在东海西南海区的应用

通过构造理想的四水团混合模型,对传统温-盐二指标图解和三指标钜阵求解分析水团混合的方法进行比较,认为三指标估算结果更接近真实值.但温、盐数据因为易得且准确性好,所以传统方法仍具有一定的实用价值.在东海西南海区的应用中,检验了天然放射性226Ra核素作为第三个指标的可行性,并对实际水团混合情况进行了评估.证实黑潮次表层水在夏季顺陆坡边缘爬升后沿底部向岸运移,并在近岸涌升,是东海陆架区营养盐外源补充的一个重要动力.

Quantitative analysis and comparison method of mixture of four waters and it's application in the southwest East China Sea

The comparison of the analysis of mixing proportions between the traditional T-S diagram method and three tracer matrix methods was done.An ideal example case of mixing of four water masses was created.It is obvious that the latter method can give the more confident solutions,but the advantage of traditional method is the wide application due to the validity and sufficient of the data.Then the latter method was applied in southwest shelf of East China Sea to evaluate the mixing of four water masses and to test the feasibility of the third tracer-226Ra.One summary is Kuroshio Tropical Water flowed underwater primarily after intruding the continental shelf and entered the surface with the upwelling in shore,which is one of the possible impetuses for the complementary nutrients from the exterior region.