Seven-component seismic data

摘要

Seismic systems today record up to four components which provide the particle displacement and the pressure. The pressure is proportional to the divergence of the displacement. The curl of the displacements can be recorded using rotation sensors. To evaluate the added information that would come from rotation sensors we used elastic modeling. In our synthetic data experiment, we predicted the effect of seabed scatterers on seven-component OBS data: hydrophones, three component geophones and three component rotation sensors. The synthetic data comprises P-waves, S-waves and surface waves. Our evaluation is that the added information from rotation sensors will be useful for identifying and separating different wave modes.