Soil response to ocean waves

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Abstract
Wave‐induced bottom pressure anomalies can result in soil motion, especially in soft deltaic deposits, that affect the design and performance of off‐shore facilities. A layered, vis‐coelastic model that includes wave‐seabottom interaction was used for a parametric study of the effects of wave degeneration, wave height, wave period, water depth, and soil properties on soil motions and the phase difference between the wave and soil motions. The effects of degradation to soil resistance due to cyclic loading are also shown with an example. The analyses were for conditions typical of the Mississippi Delta. The results presented in the paper should help the oceanographer, geotechnical engineer, and structural designer establish reasonable bounds for a preliminary design criterion and to narrow the number of analyses required to select a final design criterion.

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