Figure F18. Plots of two-way traveltime (ms) vs. depth (mbsf) derived by different methods and applied at Expedition 313 holes. Vertical seismic profile (VSP) check shot values (red) were measured in each hole (see "Downhole measurements"), but for reasons discussed in text, the alternate method of time-depth relationships derived from MCS stacking velocities was used to estimate the burial depths of seismic reflections. The time-depth relationship applied to all conversions in this volume (see "Stacking Velocity, OSP") is shown in black circles. A small refinement, shown in green circles (see "Stacking Velocity, post-OSP"), is believed to be more reliable. A. Hole M0027A. B. Hole M0028A. C. Hole M0029A.
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