Abstract
Near field observations of seismic waves as well as static deformations are quite necessary for elucidating focal mechanisms, from which we can obtain many informations on dynamic process at the focus and stress field within crust or upper mantle.
When comparing theoretical seismograms with observed ones, it is sometimes sufficient to calculate seismograms on the basis of an assumption of a semi-infinite medium or even an infinite medium. However, in order to discuss detailed features of wave forms, it is of course required to take realistic structural model into account.
In this paper, theoretical expressions are derived for surface displacements in the near field due to an arbitrary oriented fault model in a multilayered medium. Numerical examples will be presented in the forthcoming paper.
