Figure F35. Synthetic seismogram model derived from Hole U1309D logging measurements and comparison to a section of multichannel seismic (MCS) reflection line Meg-4. A. Two-way traveltime-to-depth based on VSP shot data to 750 mbsf and an assumed value at 1415 mbsf. B. Conversion of logging P-wave velocity to traveltime at depth. C. Logging bulk density. D. Time-depth scales. E. Reflectivity model derived from data B and C, bottom velocity value assumed. RC = reflectivity coefficient, which indicates impedance contrast. F. Wavelet convolved with reflectivity model. G. Resulting synthetic seismogram. H. Synthetic seismogram trace overlain on section of MCS Line Meg-4 at projected location of Hole U1309D.
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