Survey Identifier: SOJN04MV
Format Acronym: MGD77
Data Center File Number: 15020161
Parameters Surveyed Code: 50511
File Creation Date (yyyymmdd): 20001129
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V MELVILLE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): T.WHITWORTH (TAMU)
Project: SOJOURN EXPEDITION LEG 4 NS
Funding: F OCE94-00707
Survey Departure Date (yyyymmdd): 19970108
Port of Departure: CAPETOWN,SO.AFRICA
Survey Arrival Date (yyyymmdd): 19970214
Port of Arrival: FREMANTLE,AUSTRALIA
Navigation Instrumentation: TRIMBLE TASMAN P(Y) GPS
Geodetic Datum/Position: WGS-84; 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: -19
Bottommost Latitude: -36
Leftmost Longitude: 018
Rightmost Longitude: 116
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: 1PING IN H2O
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: ONE MINUTE VALUES EXTRACTED FROM SEABEAM CENTER BEAM
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 06
Reference Field Code: 88
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: 9786989
Departure Base Station Description: DOD2080-9 PAPEETE,TAHITI
Arrival Base Station Gravity: 9794001
Arrival Base Station Description: DOD2023-1 FREMANTLE,AUSTRALIA
Additional Documentation: PROCESSED BY GEOLOGICAL DATA CENTER, SCRIPPS INSTITUTION OF OCEANOGRAPHY, DEPTHS CORRECTED FOR 5 METER SHIP DRAFT. 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: 52447
Min/Max Data Record:
Date: 1997 01 08
Latitude: -35.16732
Longitude: +18.10976
Bathymetry, 2- Way Traveltime: 000227
Bathymetry, Corrected Depth: 17.0
Observed Gravity: 9781327
Free-Air Anomaly: -0793
Min/Max Data Record:
Date: 1997 02 13
Latitude: -19.73153
Longitude: +115.69268
Bathymetry, 2- Way Traveltime: 079733
Bathymetry, Corrected Depth: 6033.0
Observed Gravity: 9794098
Free-Air Anomaly: +0437