IODP operator and logging contractor: LDEO-BRG Hole: U1328C Expedition: 311 Location: Cascadia Margin (NE Pacific) Latitude: 48° 40.0567' N Longitude: 126° 51.0436' W Logging date: October 14-15, 2005 VSP STACK SUMMARY LISTING (one-way transit times) Gun and Hydrophone Coordinates: Gun Azimuth: 0.0 deg Gun Offset: 49.0 m Gun Depth (from Schlumberger Zero): 12.3 m Hydrophone Depth (from Schlumberger Zero): 12.3 m Seismic Reference Depth (from Schlumberger Zero): 10.3 m Other VSP constants: Surface Velocity: 1524 m/s Acquisition Break Time: Time between start of recording and first break Acquisition Transit Time: Time between shot firing (as recorded by blast phone) and first break. The shot is fired ~12 milliseconds after start of recording. The difference between Acquisition Break Time and Acquisition Transit Time is not constant and varies for each shot. SHOTSEQUENCE ACQUISITION_ ACQUISITION_ CABLE_LENGTH ACQUISITION_ ACQUISITION_ _NUMBER SHOT_NUMBER SHOT_TIME (m) BREAK_TIME TRANSIT_ ----- ----- ----- ----- (s) TIME ----- ----- ----- ----- ----- (s) ----- ----- ----- ----- ----- ----- 35 1 15-10-2005:06:21:56 1565.099976 1.044803 1.032242 34 2 15-10-2005:06:26:31 1559.999878 1.040482 1.028763 33 3 15-10-2005:06:30:58 1554.999878 1.038011 1.025658 32 4 15-10-2005:06:35:56 1550.000000 1.032900 1.021209 31 5 15-10-2005:06:41:38 1545.000000 1.030758 1.019179 30 6 15-10-2005:06:46:37 1539.999878 1.028058 1.016379 29 7 15-10-2005:06:52:21 1532.999878 1.023963 1.011525 28 8 15-10-2005:06:56:40 1529.999878 1.023055 1.010560 27 9 15-10-2005:07:03:59 1525.000000 1.016667 1.005046 26 10 15-10-2005:07:10:51 1520.000000 1.017026 1.004543 25 11 15-10-2005:07:17:30 1509.999878 1.009987 0.998316 24 12 15-10-2005:07:25:24 1503.900024 1.007151 0.994639 23 13 15-10-2005:07:31:25 1500.000000 1.004256 0.991833 22 14 15-10-2005:07:36:58 1495.000000 1.002221 0.989732 21 15 15-10-2005:07:42:10 1489.999878 0.997321 0.985676 20 16 15-10-2005:07:47:22 1484.999878 0.995234 0.982794 19 17 15-10-2005:07:52:40 1479.999878 0.993089 0.980531 18 18 15-10-2005:07:57:05 1475.000000 0.989124 0.976631 17 19 15-10-2005:08:02:03 1470.000000 0.984327 0.972972 16 20 15-10-2005:08:08:21 1464.999878 0.983163 0.970809 15 21 15-10-2005:08:14:59 1459.999878 0.984726 0.972344 14 22 15-10-2005:08:23:14 1454.999878 0.977017 0.964625 12 23 15-10-2005:08:32:15 1450.000000 0.000000 0.000000 13 24 15-10-2005:08:36:57 1450.000000 0.973244 0.961638 11 25 15-10-2005:08:42:30 1444.899902 0.971179 0.958670 10 26 15-10-2005:08:50:05 1439.999878 0.966154 0.954508 9 27 15-10-2005:08:56:03 1434.999878 0.963705 0.952123 8 28 15-10-2005:09:00:28 1429.999878 0.960833 0.948469 7 29 15-10-2005:09:08:04 1425.000000 0.957984 0.946339 6 30 15-10-2005:09:17:17 1414.999878 0.953064 0.940707 5 31 15-10-2005:09:21:34 1409.900024 0.950124 0.937688 4 32 15-10-2005:09:26:11 1404.999878 0.946644 0.934250 3 33 15-10-2005:09:32:04 1400.000000 0.945390 0.932886 2 34 15-10-2005:09:38:42 1395.000000 0.939583 0.928003 1 35 15-10-2005:09:45:14 1389.999878 0.938414 0.925939 0 36 15-10-2005:09:49:35 1384.999878 0.935203 0.922671