STATIC DEFORMATION OF 2 WELDED ELASTIC HALF-SPACES CAUSED BY A FINITERECTANGULAR FAULT

The expressions for the displacements caused by a point displacement d islocation in a two-phase medium are integrated analytically to obtain the displacement field produced by a finite rectangular fault in a ho mogeneous, isotropic, elastic half-space in welded contact with anothe r homogeneous, isotropic, elastic half-space. The results are valid fo r arbitrary values of the Poisson's ratio of the two media and for arb itrary observer locations. The variation of the displacement field wit h the distance from the interface as well as with the distance from th e fault is studied numerically. The displacement field in two welded h alf-spaces is compared with the corresponding field in a half-space an d in an infinite medium. Contour maps showing the deformation of the m edium around a rectangular strike-slip fault are also presented.