Figure F43. Synthetic seismogram generation for Site C0004. A. Time vs. depth curve based on check shot data. B. Sonic log in slowness. C. Pseudo-density log. D. Computed synthetic seismogram shown as five identical traces side by side. E. Reflection coefficients determined from the input sonic and density logs. F. 256 ms long, 0 ms lag deterministic wavelet used as a source wavelet. G. Fifteen traces of Inline 2674 closest to borehole to the northwest. H. Synthetic seismogram repeated with positive amplitude filled in red and negative amplitude filled in blue. I. Fifteen traces of Inline 2674 closest to borehole to the southeast. J. Ultrasonic caliper. K. Gamma ray log. Note lack of correspondence of high caliper values and sonic log, suggesting high quality of logs at this site. LSF = LWD depth below seafloor.
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