Analysis of spurious events in seismic interferometry

Seismic interferometry can be used to construct the Green’s function between two buried receivers in the subsurface. To construct the exact Green function sources should be placed at a surface enclosing the buried receivers. In practice sources could only be placed at the surface, and spurious events are introduced in the constructed Green’s function. The origin of these spurious events are analysed and methods to reduce the amplitude of these events are investigated.