This course focuses on the fundamentals of soil dynamics and on its use for geotechnical design and risk assessment in areas of high seismicity. Emphasis will be given to the processes that control wave propagation in natural deposits as well as to the implications of ground shaking for the natural and built environment. Specific topics include vibration of elementary systems, wave propagation in elastic, layered, saturated media, behavior of dynamically loaded soils, theories of vibrations of foundations, prediction of soil response to earthquake motion, determination of dynamic soil properties, strong ground motion, site response analysis, liquefaction potential assessment.