Figure F39. Summary of logs recorded during the second pass of the Formation MicroScanner (FMS)-sonic tool string, Hole U1343E. Hole size was calculated by the two orthogonal calipers of the FMS (C1 and C2). High waveform coherence (red in the velocity tracks) is a measure of the reliability of the slowness/time coherence algorithm used to derive compressional (VP) and shear (VS) velocities from the monopole and lower dipole sonic waveforms, respectively. Waveform amplitude is shown to display any amplitude anomalies that could indicate the occurrence of gas hydrate. None were detected. gAPI = American Petroleum Institute gamma ray units. WF = sonic waveform, LD = lower dipole.
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