VSP Processing - ODP Leg 183, Hole 1140A

ODP logging contractor: LDEO-BRG

Hole: 1140A

Leg: 183

Location: Kerguelen Plateau (Antarctic Ocean)

Latitude: 46° 16.599' S

Longitude: 68° 29. 4984' E

Logging date: January, 1999

Water depth (as seen on logs): 2408 mbrf

Total penetration: 321.9 mbsf

Total core recovered: 144.9 m (45 %)

TOOL USED: WST (Well Seismic Tool

The logging data was recorded by Schlumberger in  DLIS format. All processing, including first arrival picking and stacking, was performed by Schlumberger during Leg 183. The data was then converted into SEGY format at the Borehole Research Group of the Lamont-Doherty Earth Observatory, using the SEGY Save module in GeoFrame.

Stacks are generally calculated with at least seven good traces.

All the data in the SEGY files are sorted shot by shot (i.e. chronologically).