The second major effect in the real data, which is not present in the synthetic data, is a small but consistent level of P-wave anisotropy. |
Contours and numerals indicate P-wave velocities. |
The color scale indicates P-wave velocity. |
In fluid-filled boreholes, the waveforms generally consists of the P-wave, the S-wave, the pseudo-Rayleigh wave, and the Stoneley wave. |
Analysis of the branch-cut integrals shows that the signal arriving at the receiver is in terms of P-wave and S-wave contributions arriving through various propagation, reflection paths. |
Because an S-wave arrives in the P-wave coda, the coda interferes with the S-wave. |