Transport patterns of micro nutrient elements from the continental shelf of the East China Sea to the Kuroshio area

On the basis of the in situ data of DO₂, pH, SiO₂, PO₄-P, NO₃-N and NO₂-N collected in the north of the East China Sea during 1987-1988, the following points are mainly expounded.
1.The inorgonic nutrients are obviously affected by continent runoff in the north of the East China Sea. Their distributions are characteristic of its distribution of terrigenous materials.
2.There are three transport paths of nutrients from the shelf to the Kuroshio area. The first is mixing-diffusing-advection and upwelling process, the process of biology and biochemistry belongs to the second, and the sinking process is the last one.
3.The swing of the Kuroshio axis affectes both the range of the migration of substances through mixing-diffusing-advection process and the upwelling degree of the subsurface Kuroshio water to the shelf.
4.Most part of the substances sink as macroparticles to the deep layer before reaching the Kuroshio area.