GENERAL SURVEY PARAMETERS: Gippsland BasinRECORDING SYSTEM : MSX / CRS STREAMERS : 7 X 5000 METERS STREAMER SEPARATION: 100 METERS TOTAL CHANNELS : 2800RECORDING 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 SECONDSSHOT POINT INTERVAL: 18.75 METERSGROUP INTERVAL : 12.5 METERSSOURCE DEPTH : 8 METERS (DI s ARE 1 METER ABOVE THE GUN)SOURCE VOLUME : 3000 CUBIC INCHES X 2SOURCE SEPARATION : 50 METERSCENTER OF SOURCE TO CABLE REFERENCE POINT: 126 METERSCENTER OF SOURCE TO CABLE LAST GROUP : 5102 METERS---------------------------------------------------------------BOL WEATHER: WSW @ 20 Knots SEAS: 1.5 m. PITCH: 77%EOL WEATHER: WSW @ 25 Knots SEAS: 1.5 m. PITCH: 65%DUMMY FILES : BOL NOISE FILE: 1 = 2 Hz. 2 = 8 Hz. EOL NOISE FILE: 1001, 1002 = 2 Hz. 1003 = 8 Hz.SPECIAL EVENTS:Line shot as multiple segmentsSP 2782-2507 inclusive and 2449-2420 inclusive NDR / NTBPSP 2485-2505 turn noise visible on front end of Cables d/t changes in offsets for coverage.Missed SP 2131,2127,2125,2011 d/t boat speed.Depth control on cable 1 birds 9-13, cable 2 birds 18-19, cable 6 bird 10 and cable 7 birds 5-8 erratic from SP 1990 due to heavy tail current (1knot)SP 1920-EOL cable 7 birds 4-10 deep due to tail current / vane wash. 12.5mEXTERNAL NOISE FROM:AHEAD : NILASTERN: NILABEAM : NIL BAD BIRD DIsC(1): NILC(2): 1 deadC(3): NILC(4): NIL C(5): NILC(6): NILC(7): 1 deadBAD GUN DIsGS(1): NILGS(2): NILGS(3): NILGS(4): NILGS(5): NILGS(6): NILGS(7): NIL
GS(8): NIL
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BAD GUN PIsGS(1): NIL GS(2): NILGS(3): NIL GS(4): NILGS(5): NILGS(6): NIL GS(7): NIL GS(8): NILBOL NOISE: EOL NOISE: C(1): 4.5 C(1): 10.1 *C(2): 4.5 C(2): 3.8 C(3): 3.9 C(3): 3.6 C(4): 3.9 C(4): 3.3 C(5): 3.5 C(5): 3.2 C(6): 3.9 C(6): 3.4 C(7): 5.2 C(7): 4.2
* EOL value for C1 affected by channel 18 spikes. Approx EOL value 4uB |
---------------------------NAVIGATION ------------------------3590 NAVIGATION TAPE NUMBER: G03A-P294-T10P2 FILE USED: G03A1904B144.0.p294NAVIGATION COMMENTS: Dead at SOLFloat GPS: T7R01Acoustics: S3T01, S7T07 Compasses: S2C1, S7C1NAVIGATION ONLINE COMMENTS:FOSP 2831FPSP 2821LPSP 2793LOSP 2783FOSP 2506FRSP 2496LPSP 2460LOSP 2450Missed some firsts oversteering to kill feather for far offsetsFOSP 2419FRSP 2409LRSP 2401LOSP 2391
FSP INFILL 2390 - EOL. |
---------------NAVIGATION PROCESSING----------------FSP: 2831LSP: 1868FEATHER ANGLESMIN: -6.3MAX: 8.3PRIMARY NAVIGATION: Multifix 2 (vesref 3)GYRO USED IN PROCESSING: spectra gyro 2ACOUSTICS NOT USED: 52301, 52707FANBEAM NOT USED:GPS TARGETS NOT USED: 54201, 64701COMPASSES NOT USED: 1201, 1514, 1610, 1701SPECIAL COMMENTS:High compass bias in mid net d/t crossline movement.High Variance d/t crossline movement.Seis gap sp 2782 - 2507
Seis gap sp 2449 - 2420 |
*********************LINE ACCEPTANCE*************************** *****(SIGNING IS ACCEPTANCE OF THE LINE)*****NAVIGATION PROCESSING:_________________________________________________QUALITY CONTROL_____________________________________________SEISMIC PROCESSING__________________________________________COORDINATOR_________________________________________________
CLIENT REP.__________________________________________________ |