ABSTRACT
The surface wave and micro-tremor survey are new methods of the engineering geophysical investigation. They have been widely used because they are of low cost and easy operation and they give the dynamic property of the ground, i.e. the shear wave velocity. This chapter discusses the application of micro-tremor and surface wave in the Qianjiangping and Shuping landslides of the Three Gorges reservoir area. The Three Gorges dam on the Yangtze River in China is the largest hydroelectric project in the world. After the first impoundment in June 2003, many landslides in her upstream area occurred or were reactivated. The study by boreholes is too expensive, especially in complex geological conditions, which is the typical case of the Three Gorges area landslides. The Surface wave survey and micro tremor observation are one of the most convenient methods to investigate the dynamic characteristics of the surface ground.
