Summary

By performing a wavefield decomposition on multicomponent seismic ocean-bottom data, the upgoing P- and S-waves just be-low the ocean-bottom can be obtained. After this step, surface-related multiples that arrive at the receiver from above will have been removed from the data. However, all surface-related multi-ples that end with a reflection from a reflector below the ocean-bottom will still be present in the decomposed upgoing data. To remove these remaining multiples, the multiple elimination method described by (Verschuur, 1991; Verschuur et al., 1992) is used. To apply the multiple removal method to the decom-posed dataset, the method is extended to accomodate ocean-bottom acquisition geometry (Verschuur and Neumann, 1999; Soellner and Widmaier, 2000). The multiple removal method can be used on any ocean-bottom receiver type (i.e. pressure, velocity, P-waves, S-waves). The relative importance of addi-tional multiple elimination will be illustrated with examples on a field dataset