Verification of the Durable Effect of the Sand Banking Method in Tsuda Bay

Abstract

Though a sand banking method is known to be effective to improve an environment of bottom sediment, there is no common method of construction or monitoring investigation. Duration of effect is also not clear. In this study, we verified the duration of effect of sand banking method based on monitoring investigation for 17 years in Tsuda Bay. As a result, it became clear that the effect lasted 17 years on improvement of sediment, elution of phosphorus, and a habitat of bottom fish.