Table T21. Checkshot survey data, Site 1261.
Checkshot
station
Depth
Traveltime
(sbsl)
Traveltime
(sbsf two-way)
Interval time
(s)
RMS velocity
(m/s)
Interval velocity
(m/s)
(mbrf)
(mbsf)
1 1911.0 0.0 1.269 0.000 1.269 1495.0 1495.0
2 2025.0 114.0 1.346 0.152 0.076 1495.0 1495.6
3 2040.0 129.0 1.355 0.170 0.009 1496.3 1671.3
4 2065.0 154.0 1.370 0.201 0.015 1497.6 1609.7
5 2085.0 174.0 1.382 0.225 0.012 1499.2 1669.5
6 2105.0 194.0 1.394 0.249 0.012 1499.9 1581.1

Notes: sbsl = seconds below sea level, sbsf = seconds below seafloor. RMS = root mean square. Rig floor (including Kelly Bushing) to sea level = 11.7 m. Air gun depth = 2 mbsl.