大船渡湾への河川からの栄養塩流入負荷量の評価

抄録

Ofunato Bay is highly enclosed because of a tsunami breakwater. Therefore, water quality problems, such as eutrophication and ocean anoxic, have been caused in the inside of the bay. In order to prevent eutrophication, it is a very important subject to calculate correctly the amount loads of the nutrients from a river. We tried to calculate the amount loads of nutrients from the continuation data of turbidity. We led the L-L equation that presumed the load of the amount of the nutrient from impurity. The phytoplankton in the Ofunato bay shows the tendency to increase due to the flood that happens in June in the ordinary year from the observation result.