Special Event Log
Party :Monarch
Seq#: 50
Survey: 9269
Dir: 107.1
Client :ExxonMobil
FSP :2622
Line : G03A1312A050
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: 1.5 m. PITCH: 79%
EOL WEATHER: ENE @ 20 Knots SEAS: 1.5 m. PITCH: 79%
DUMMY FILES : 3-35
BOL NOISE FILE: 1 = 2 Hz.
2 = 8 Hz.
EOL NOISE FILE: 1434 = 2 Hz.
1435 = 8 Hz.
SPECIAL EVENTS: FGSP 2870 d/t Ship noise. LGSP 3700 d/t Swell bursts.
Gun DI are erratic d/t sea state 1.5m
Intermittent swell noise on streamers d/t WX ENE @ 20 Knts, Sea @ 1.5m.
The swell noise has appeared to increase with water depth.
BOL - Sp 2884 Ship noise
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 Intermittent
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): 4.2 C(1): 3.3
C(2): 4.1 C(2): 3.4
C(3): 3.9 C(3): 3.6
C(4): 4.0 C(4): 4.6
C(5): 3.9 C(5): 5.5
C(6): 3.9 C(6): 4.1
C(7): 3.9 C(7): 5.3
C(8): 4.4 C(8): 3.0
---------------------------NAVIGATION ------------------------
3590 NAVIGATION TAPE NUMBER:
P2 FILE USED:
NAVIGATION COMMENTS:
---------------NAVIGATION PROCESSING----------------
FSP:2870
LSP:3700
FEATHER ANGLES
MIN:9.8
MAX:13.9
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 1406 1714 1801
SPECIAL COMMENTS:
Shots 2870-3700 processed. Other shots DNP d/t noise/sea state.
Tailbuoys 4, 6, and 8 dropping out during line.
Noisy rGPS during line due to sea state and interferance.
Some noisy compasses due to sea state.
Cable DI out: 1801 1602 1201
DI's 1104-1109, 1418, 1714, 1805-1809 erratic. DI's 1204 & 1304 deep.
Line processed backwards due to non-convergence at start of line. Noisy network due to sea conditions.
*********************LINE ACCEPTANCE***************************
*****(SIGNING IS ACCEPTANCE OF THE LINE)*****
NAVIGATION PROCESSING:_________________________________________________
QUALITY CONTROL_____________________________________________
SEISMIC PROCESSING__________________________________________
COORDINATOR_________________________________________________
CLIENT REP.__________________________________________________
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