抄録
Nutrients are released from the contaminated sediments on the sea bottom. In order to improve the sediment quality, sand capping techniques were utilized at several coastal seas. However, the technique is worry about the effectiveness due to newly deposited sediments on sea bottom. This paper describes the lasting of sand capping techniques on nutrient release reduction from contaminated sediments by field experiments at MM21 district in Yokohama Port. From the study, it is found that the lasting of sand capping techniques on nutrient release reduction is still remained. But the effect of sand capping technique is decreasing due to newly deposited contaminated sediments on clean sand capping sands.
