Figure F4. Model of dipole pole excitation (relative amplitude) as a function of frequency and slowness. The major resonance peak on this surface occurs near 780 ms/ft and at ~1000 Hz. Modeling also indicates that the dipole mode is nondispersive below 500 Hz.

Figure F4. Model of dipole pole excitation (relative amplitude) as a function of frequency and slowness. The major resonance peak on this surface occurs near 780 ms/ft and at ~1000 Hz. Modeling also indicates that the dipole mode is nondispersive below 500 Hz.