PREDICTION OF LAKESHORE CHANGES DUE TO WIND WAVES GENERATED IN CLOSED WATER BODY WITH AN ISLAND

Abstract

 Lakeshore changes due to wind waves were investigated when an island (or a sand cay) is located in a closed water body, taking Lake Balkhash in eastern Kazakhstan and Lake Inawashiro in Fukushima Prefecture as examples. When wind waves are incident to an island located in a closed water body, lakeshore changes associated with the wave-sheltering effect of the island will take place. However, when a sand cay is located in a water body, the sand cay itself can deform owing to the action of wind waves, resulting in the change in wave field. Thus, more complicated lakeshore changes will occur. In this study, the BG model was applied to investigate these lakeshore changes.