IMPROVEMENTS IN THE OBSERVATION OF SHEAR WAVES*

The observation of shear waves is finding more interest in seismic exploration, especially for the determination of additional lithologic parameters, e.g. V^p/V^s. We demonstrate the observation of converted waves in routine seismic work by means of horizontal geophones. Field technique and data processing permit acquisition and interpretation of converted waves in connection with routine seismic measurements. A special interpretation of the recorded converted waves results in the shear wave velocity and the V^p/V^s relation.