The Dynamic Vertical Variation Rule of Dongfang Yang

According to horizontal and vertical matter content variation model proposed by this author, this paper, based on the investigation data of Cd in Jiaozhou Bay in May and August of 1991, calculated the horizontal loss amount, vertical disputed amount and vertical sediment amount of Cd content at surface and bottom, and determined the modeling chart of horizontal and vertical variation of Cd content. The calculation results showed that in May and August, the absolutely and relatively horizontal loss amount of Cd content at surface and bottom was 0.02-0.52µg/L and 25.00-89.65%, respectively. There was absolutely vertical disputed amount of 0.02-0.52µg/L and absolutely vertical sediment amount of 0.01-0.02µg/L in Cd content at surface and bottom, with relatively vertical disputed amount of 5.00-89.65% and relatively vertical sediment amount of 6.25-25.00%, respectively. In horizontal transport, as long as Cd content transports through waters, whether northern bay mouth or bay center, surface or bottom, it will cause a certain loss. The higher horizontal loss amount at surface, the higher it at bottom. In vertical transport, the high Cd content at surface can rapidly and constantly sedimented to seafloor. When the source to transport Cd content got far, Cd content at surface decreased to a great or small extent, the vertical disputed amount of Cd content at surface and bottom decreased correspondingly, and when it decreased to 0.00%, it transformed to vertical sediment amount of Cd content at surface and bottom. This paper proposed the dynamic vertical variation rule of Cd content, disclosed its beginning, process till the end, and determined its dynamic vertical variation process, including dynamic vertical equilibrium point.