Table T8. Check shot raw and smoothed traveltimes and calculated interval velocities, Site C0004. (See table notes.)
| Depth* (m LSF) |
Midpoint depth† (m LSF) |
Raw | Smoothed | ||
|---|---|---|---|---|---|
| First arrival time* (ms) |
Interval velocity† (m/s) |
First arrival time* (ms) |
Interval velocity† (m/s) |
||
| –0.01 | 8.76 | 1761.9 | 1458 | 1762.0 | 1540 |
| 17.54 | 24.89 | 1773.9 | 1710 | 1773.4 | 1564 |
| 32.24 | 44.00 | 1782.5 | 1477 | 1782.8 | 1600 |
| 55.76 | 63.06 | 1798.4 | 1663 | 1797.5 | 1622 |
| 70.36 | 82.15 | 1807.2 | 1726 | 1806.5 | 1673 |
| 93.95 | 101.27 | 1820.9 | 1739 | 1820.6 | 1701 |
| 108.58 | 120.39 | 1829.3 | 1752 | 1829.2 | 1737 |
| 132.20 | 139.49 | 1842.8 | 1809 | 1842.8 | 1755 |
| 146.77 | 158.57 | 1850.8 | 1693 | 1851.1 | 1801 |
| 170.36 | 177.66 | 1864.7 | 2304 | 1864.2 | 1825 |
| 184.96 | 196.77 | 1871.1 | 1673 | 1872.2 | 1860 |
| 208.58 | 215.95 | 1885.2 | 2087 | 1884.9 | 1865 |
| 223.31 | 235.06 | 1892.3 | 1778 | 1892.8 | 1910 |
| 246.80 | 254.12 | 1905.5 | 2246 | 1905.1 | 1900 |
| 261.44 | 273.25 | 1912.0 | 1851 | 1912.8 | 1952 |
| 285.06 | 292.37 | 1924.7 | 2127 | 1924.9 | 1977 |
| 299.69 | 318.82 | 1931.6 | 1922 | 1932.3 | 1982 |
| 337.95 | 349.76 | 1951.5 | 1948 | 1951.6 | 2002 |
| 361.57 | 366.32 | 1963.7 | 1782 | 1963.4 | 2024 |
| 371.08 | 373.77 | 1969.0 | 2832 | 1968.1 | 2070 |
| 376.46 | — | 1970.9 | — | 1970.7 | — |
Notes: Smoothed values were used in the generation of synthetic seismograms and time-depth conversion of seismic reflection profiles near the site. * = first arrival time picks associated with depths of observations, † = interval velocities associated with midpoints between depths of observations. LSF = LWD depth below seafloor. — = no data.
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