抄録
Artificial shallow areas are being developed around shoreline of Lake Shinji since 2000. Main purpose of the development is to restore deteriorated shorelines due to the construction of concrete revetments. It also may help the decrease of the turbidity because of the wave height change. In order to reveal the effect of the development on the turbidity, field surveys and numerical simulations as to wave and turbidity were conducted in the lake. Field surveys showed that artificial shallow area decreased wave heights but turbidity did not change significantly. Wave simulations using SWAN revealed that the developed shallow area changed wave heights smaller but it also partly made the bottom shear stress larger, which might enhance the resuspension. Turbidity simulations using ELCOM-CAEDYM showed that the development of artificial shallow area did not significantly contribute to the decrease of the turbidity.
