Borehole Seismic Data Processing
IODP-USIO logging contractor: LDEO-BRG
Hole: U1327D
Expedition: 311
Location: Cascadia Margin (NE Pacific)
Latitude: 48° 41.8954' N
Longitude: 126° 51.9059' W
Logging date: October 7-8, 2005
Sea floor depth (drillers'): 1314.6 mbrf
Sea floor depth (loggers'): 1314 mbrf
Total penetration: 217.7 mbsf
Total core recovered: 53.99(71.1 % of cored section; only 19.5 m were cored)
Oldest sediment cored: Pleistocene
Lithologies: clay and silty clay
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 Expedition 311. 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).