ODP logging contractor: LDEO-BRG
Well name: 1118A
Leg: 180
Location: Woodlark Basin (tropical SW Pacific Ocean)
Latitude: 9°35.11' S
Longitude: 151°34.42' E 
Logging date: August, 1998
Bottom felt: 2311 mbrf 
Total penetration: 926.6 mbsf
Total core recovered: 466.2 m (65 %)

VSP TOOL USED: WST (Well Seismic Tool)

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.

VSP STACKS SUMMARY LISTING (one-way transit times)

DEPTH ACQUISITION_ ACQUISITION_  ACQUISITION_     
(mbsf) SHOT_TIME   BREAK_TIME    TRANSIT_TIME       
                     (s)             (s)               
689.1	04-07-1998:10:37:10	1.979327	1.903887
659.2	04-07-1998:10:43:27	1.964167	1.888625
629.1	04-07-1998:10:49:10	1.954838	1.878437
599.1	04-07-1998:11:04:17	1.939305	1.862884
569.2	04-07-1998:11:10:21	1.923941	1.847432
539.1	04-07-1998:11:17:36	1.903856	1.827349
508.2	04-07-1998:11:23:00	1.894987	1.819729
479.1	04-07-1998:11:27:22	1.877439	1.801197
449.1	04-07-1998:11:34:30	1.864369	1.788975
419.1	04-07-1998:11:42:42	1.849715	1.773213
389.0	04-07-1998:11:53:28	1.831611	1.757016
359.0	04-07-1998:12:02:55	1.815838	1.741395
329.1	04-07-1998:12:08:40	1.797383	1.724693
299.1	04-07-1998:12:14:52	1.781775	1.709013
269.1	04-07-1998:12:21:17	1.765157	1.69243
239.1	04-07-1998:12:29:05	1.749888	1.67628
209.1	04-07-1998:12:38:15	1.73456	1.660895
179.1	04-07-1998:12:45:56	1.717977	1.644278
149.1	04-07-1998:12:56:56	1.700073	1.626345
124.0	04-07-1998:13:08:36	1.685567	1.611848