Survey Identifier: SOJN05MV
Format Acronym: MGD77
Data Center File Number: 15020162
Parameters Surveyed Code: 55513
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): D.CHRISTIE
Project: SOJOURN EXPEDITION LEG 5
Funding: NSF OCE94-00707
Survey Departure Date (yyyymmdd): 19970219
Port of Departure: FREMANTLE,AUSTRALIA
Survey Arrival Date (yyyymmdd): 19970302
Port of Arrival: HOBART,TASMANIA
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: GAS INJECTION GUN
Formats of Seismic Data: ANAL.REC., 35MM FILM
Topmost Latitude of Survey: -31
Bottommost Latitude: -46
Leftmost Longitude: 114
Rightmost Longitude: 148
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,AUSTRALIA
Arrival Base Station Gravity: 980437
Arrival Base Station Description: BMR6491.0260 HOBART,TASMANIA
Additional Documentation: PROCESSED BY GEOLOGICAL DATA CENTER, SCRIPPS INSTITUTION OF OCEANOGRAPHY, DEPTHS CORRECTED FOR 5 METER SHIP DRAFT. GRAVITY: 1 SEC METER COUNTS FILTERED, WITH 99 SEC STD.DEV.GAUSSIAN CONV.WINDOW. FREE AIR ANOMALY SPIKES MAY BE, PRESENT BECAUSE SAME FILTER NOT USED FOR NAV. 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: 16880
Min/Max Data Record:
Date: 1997 02 19
Latitude: -45.45005
Longitude: +114.41450
Bathymetry, 2- Way Traveltime: 000427
Bathymetry, Corrected Depth: 32.0
Magnetics Total Field, 1st Sensor: 610680
Magnetics Residual Field: -03792
Observed Gravity: 9768232
Free-Air Anomaly: -0642
Min/Max Data Record:
Date: 1997 03 02
Latitude: -31.91593
Longitude: +147.52760
Bathymetry, 2- Way Traveltime: 078600
Bathymetry, Corrected Depth: 5939.0
Magnetics Total Field, 1st Sensor: 647030
Magnetics Residual Field: +03595
Observed Gravity: 9806557
Free-Air Anomaly: +0616