Abstract
In September, 1997 high waves attacked the Shonan coast in Sagami Bay. Due to this wave attack beach was severely eroded and beach cliff erosion occured in wide spread area. Field observation was carried out during and right after storm waves. It was found that sand accumulated on the east side of the various coastal structures and thus beach erosion was caused by westward longshore sand transport induced by easterly incident waves. Particularly this typhoon waves are of characteristics of long period waves.
