Special Event Log
Party :Monarch
Seq#: 72
Survey: 9269
Dir: 107.1
Client :ExxonMobil
FSP :2622
Line : G03A1584A072
LSP :4019
Comments
GENERAL SURVEY PARAMETERS: Gippsland Basin
RECORDING SYSTEM : MSX / CRS
STREAMERS : 8 X 5000 METERS
STREAMER SEPARATION: 100 METERS
TOTAL CHANNELS : 3200
RECORDING FILTERS
LOW CUT : 2 Hz/12 dB per oct.
HIGH CUT : 206 Hz/264 dB per oct.
STREAMER DEPTH : 9 METERS
RECORD LENGTH : 6.5 SECONDS
SHOT POINT INTERVAL: 18.75 METERS
GROUP INTERVAL : 12.5 METERS
SOURCE DEPTH : 8 METERS (DI s ARE 1 METER ABOVE THE GUN)
SOURCE VOLUME : 3000 CUBIC INCHES X 2
SOURCE SEPARATION : 50 METERS
CENTER OF SOURCE TO CABLE REFERENCE POINT: 206 METERS
CENTER OF SOURCE TO CABLE LAST GROUP : 5182 METERS
---------------------------------------------------------------
BOL WEATHER: ENE @ 20 Knots SEAS: 1.0 m. PITCH: 77%
EOL WEATHER: ENE @ 20 Knots SEAS: 1.0 m. PITCH: 77%
DUMMY FILES : 3-40
BOL NOISE FILE: 1 = 2 Hz.
2 = 8 Hz.
EOL NOISE FILE: 1439 = 2 Hz.
1440 = 8 Hz.
SPECIAL EVENTS:
Weak ship noise visible from abeam. apx.10uBar. during SOL noise record
Weak ship noise Sps 3395-3800.
EXTERNAL NOISE FROM:
AHEAD : NIL
ASTERN: NIL
ABEAM : NIL
BAD BIRD DIs
C(1): NIL
C(2): NIL
C(3): NIL
C(4): NIL
C(5): NIL
C(6): 02 Reading Shallow
C(7): NIL
C(8): 21
BAD GUN DIs
GS(1): NIL
GS(2): NIL
GS(3): NIL
GS(4): NIL
GS(5): NIL
GS(6): NIL
GS(7): NIL
GS(8): NIL
BAD GUN PIs
GS(1): NIL
GS(2): NIL
GS(3): NIL
GS(4): NIL
GS(5): NIL
GS(6): NIL
GS(7): NIL
GS(8): NIL
BOL NOISE: EOL NOISE:
C(1): 5.9 C(1): 3.3
C(2): 5.7 C(2): 2.9
C(3): 5.4 C(3): 2.7
C(4): 5.3 C(4): 2.8
C(5): 5.2 C(5): 3.0
C(6): 5.3 C(6): 3.0
C(7): 5.1 C(7): 2.8
C(8): 5.5 C(8): 3.5
Weak ship noise visible from abeam. apx.10uBar. during SOL noise record
---------------------------NAVIGATION ------------------------
3590 NAVIGATION TAPE NUMBER:
P2 FILE USED:
NAVIGATION COMMENTS:
---------------NAVIGATION PROCESSING----------------
FSP: 2622
LSP: 4019
FEATHER ANGLES
MIN: 2.7
MAX: 10.7
PRIMARY NAVIGATION: MFIX_2_Optus ( VESREF 3 )
GYRO USED IN PROCESSING: Gyro 2
ACOUSTICS NOT USED: 51101 52203 52301 52507
FANBEAM NOT USED:
GPS TARGETS NOT USED: 64101 64501
COMPASSES NOT USED: 1201 1801
SPECIAL COMMENTS:
Noisy rGPS due to weather conditions.
PosNet gyro drift during line.
Cable DI out: 1201 1602 1801
DI 1821 deep and erratic.
Line processed backwards due to non convergence at start of line.
GELB extended iterating Kalman filter used for shotpoints 2622-3000 due to
dynamics during line.
TriNav GPS bad during line.
*********************LINE ACCEPTANCE***************************
*****(SIGNING IS ACCEPTANCE OF THE LINE)*****
NAVIGATION PROCESSING:_________________________________________________
QUALITY CONTROL_____________________________________________
SEISMIC PROCESSING__________________________________________
COORDINATOR_________________________________________________
CLIENT REP.__________________________________________________
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