Effects of an Anelastic Seafloor on the Elastic Decomposition of Marine Multi-Component Seismic Data

A15 EFFECTS OF AN ANELASTIC SEAFLOOR ON THE ELASTIC DECOMPOSITION OF MARINE MULTI-COMPONENT SEISMIC DATA Abstract 1 Dual-sensor (hydrophone and three-component geophone) data recorded on the seafloor allow for the decomposition of the seismic wavefield into its up- and down-going P- and S-wave constituents. Elastic wavefield decomposition requires accurate knowledge of the seismic material properties of the seafloor in the immediate vicinity of the receivers and is based on the assumption that the seafloor can be represented as an elastic half-space. For most recording environments this assumption is clearly not valid. To explore the potential implications we apply a state-of-the-art