Abstract: In the researches on seismic effects in complex sites, for the scattering of seismic waves by 3D local irregular terrains, in recent years, the author proposed and developed an indirect boundary element method (IBEM) based on the dynamic Green's function of uniformly distributed loads acting on an inclined plane, obtained 3D scattering results for different terrains. To facilitate the comparison and validation between the results of this IBEM with relevant studies, the author has collated and supplemented the obtained results to form a series for publication. The 2D and 2.5D results in isotropic elastic media have been consolidated and written up for publication. This paper collates and complements the scattering results for three-dimensional canyons, hills and alluvial basins of different geometries in isotropic elastic media under the action of plane SH, P and SV waves.