Generalized PP + PS = SS from seismic interferometry

Using a novel form of seismic interferometry as a basis, we derive new, dynamically correct expressions for reflected and converted P- and S-wave responses to both P- and S-wave sources. We use these expressions to derive a generalized form of relationship between PP, PS, and SS waves, often referred to as PP + PS = SS. By relating this method to seismic interferometry, it is possible to see further applications of the new relationships in acquisition and processing of P- and S-waves, and also in the development of new imaging and inversion schemes related to interferometry.