Summary: In theory, model building techniques developed for PP surveys are equally applicable to obtain shear velocities if SS data are available. In practice, however, if shear waves are acquired at all, they are most often recorded as PS conversions. For these data, PP model-building techniques cannot be applied. We suggest a new method to combine PP and PS data to obtain a shear velocity model. The method is based on the NIP wave tomography and uses wave field attributes determined with common reflection surface stacking of the data in combination with ray tracing.
In theory, model building techniques developed for PP surveys are equally applicable to obtain shear velocities if SS data are available. In practice, however, if shear waves are acquired at all, they are most often recorded as PS conversions. For these data, PP model‐building techniques cannot be applied. We suggest a new method to combine PP and PS data to obtain a shear velocity model. The method is based on the NIP wave tomography and uses wave field attributes determined with common reflection surface stacking of the data in combination with ray tracing.