Triple Sensor Wavefield Separation

L-10 TRIPLE SENSOR WAVEFIELD SEPARATION Summary 1 A method is described of identifying different wave modes recorded by ocean bottom multi-component detectors. Vertical geophone horizontal geophone and hydrophone data are combined to form filters which when applied to the input wavefields separate the upgoing P-waves upgoing S-wave and downgoing P-waves. Introduction Four component ocean bottom hardware consists of three orthogonal geophones and a hydrophone. This allows for the recording of compressional as well as shear energy. Shear energy mode converted from the compressional energy upon reflection provides additional information about the subsurface. Benefits of mode-converted seismic include: i) the enhanced