Abstract
A new solution for the seabed response to surface waves, in which the effects ofthe wave-induced bottom shear is taken account for, is derived. The effects of the bottom shear on the shear stress of the solid skeleton is significant in the seabed near the bed surface. For some conditions, the vertical effective stress of the solid skeleton near the bed surface becomes 0 after the wave crest passes. The shear stress takes a negative maximum in this phase. This maximum does not depend on the seabed conditions, but depends only on the wave conditions.