Simulation of red tide formation in semi-enclosed coastal sea and its application for prevention

点击翻译按钮获取中文摘要

In the present research, Eta-jima Bay was selected for the investigation of the typical semi-enclosed coastal sea in the Seto Inland sea. The atmospheric parameter, water quality and primary production of plankton were observed for the establishment of the mathematical ecological model. Real time monitoring system and mesocosm were employed for the observation in which water temperature, salinity dissolved oxygen, potential of hydrogen, chlorophyll a, nutrients, number of plankton were measured. The observation by the mesocosm evaluated the effect of the horizontal transportation by current. The mathematical ecological model was composed by dissolved oxygen, dissolved inorganic phosphorus, suspended organism, dissolved organism with subsidiary parameter as salinity and water temperature. Ocean model was developed to simulate a current based on the Princeton Ocean Model including the effect of oyster raft which occupy in the Eta-jima bay. In the present research, environment ecosystem simulator was developed by the combination of the ocean model, atmosphere model and mathematical ecological model. The developed environment ecosystem simulator revealed the effect of the oyster on the ecosystem, which inspire the possibility to control the ecosystem and red tide formation by the arrangement of the oyster raft.