Survey Identifier: BMRG07MV
Format Acronym: MGD77
Data Center File Number: 15020157
Parameters Surveyed Code: 55031
File Creation Date (yyyymmdd): 19990901
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V MELVILLE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): N.BRAY
Project: BOOMERANG EXPEDITION LEG 7
Funding: NSF OCE94-00707
Survey Departure Date (yyyymmdd): 19960419
Port of Departure: PORT HEDLAND,AUSTRALIA
Survey Arrival Date (yyyymmdd): 19960503
Port of Arrival: SUVA,FIJI
Navigation Instrumentation: TRIMBLE TASMAN P(Y) GPS
Geodetic Datum/Position: LINEAR FIT TO 60 SEC FIXES
Bathymetry Instrumentation: SEABEAM 2000 w/SIDESCAN
Additional Forms of Bathymetric Data: ANAL.REC,35MM FILM,DIGITAL MAG. TAPE
Magnetics Instrumentation: GEOMETRICS MAGNETOMETER MOD-G 801/3
Additional Forms of Magnetics Data: ANAL.REC, 35MM FILM, DIGITAL TAPE
Gravity Instrumentation: BELL BGM-3 METER
Additional Forms of Gravity Data: DIGITAL TAPE
Seismic Instrumentation: NONE COLLECTED
Topmost Latitude of Survey: -09
Bottommost Latitude: -21
Leftmost Longitude: 118
Rightmost Longitude: 179
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: 1PING IN H2O
Assumed Sound Velocity: 15000
Interpolation Scheme: 1 MINUTE VALUES EXTRACTED FROM SEABEAM VERTICAL BEAM
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 06
Reference Field Code: 03
Reference Field: IGRF-1995
Method of Applying Residual Field: LIN.INTERP.POINTS WITHIN ONE DEGREE SQUARE
General Digitizing Rate of Gravity: 010
General Sampling Rate of Gravity: 01
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM 1967
Reference System Code: 3
Reference System: SYSTEM IGSN 71
Corrections Applied: EOTVOS AND METER DRIFT
Departure Base Station Gravity: 9794001
Departure Base Station Description: DOD2023-1 FREMANTLE,AUSTRL
Arrival Base Station Gravity: 9786424
Arrival Base Station Description: DOD2050-1 PAGO PAGO,SAMOA
Additional Documentation: PROCESSED BY GEOLOGICAL DATA CENTER, SCRIPPS INSTITUTION OF OCEANOGRAPHY, DEPTHS CORRECTED FOR 5 METER SHIP DRAFT. NAVIGATION: DR BETWEEN 1 MINUTE, INTERVAL GPS FIXES. GPS PRESENT 24 HRS/DAY. FOLLOWING INFO FROM MULTIBEAM, BATHYMETRY: Heading Sensor Sperry MK 23 Gyro; Vertical reference unit sensor, Datawell Hippy Model 120; Navigation: Horizontal_Datum WGS84; Uncorrected, meters, assumed SV 1500m/sec; Ship draft 5; Surface sound velocity sensor.
Number of Data Records: 21215
Min/Max Data Record:
Date: 1996 04 19
Latitude: -20.31695
Longitude: +118.53997
Bathymetry, 2- Way Traveltime: 000280
Bathymetry, Corrected Depth: 21.0
Magnetics Total Field, 1st Sensor: 433540
Magnetics Residual Field: -03801
Min/Max Data Record:
Date: 1996 05 03
Latitude: -9.21510
Longitude: +178.42430
Bathymetry, 2- Way Traveltime: 069573
Bathymetry, Corrected Depth: 5251.0
Magnetics Total Field, 1st Sensor: 519190
Magnetics Residual Field: +06996