Survey Identifier: GECS-JMV


Format Acronym: MGD77
Data Center File Number: 15020042
Parameters Surveyed Code: 55111
File Creation Date (yyyymmdd): 19811013
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V MELVILLE
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): BREWER P.
Project: GEOSECS LEG J
Survey Departure Date (yyyymmdd): 19740412
Port of Departure: PAPEETE
Survey Arrival Date (yyyymmdd): 19740509
Port of Arrival: PAPEETE,TAHITI
Navigation Instrumentation: SATNAV,MANUAL ENTRY GYRO AND SPD CHANGES
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: 12KHZ/GIFFT RECORDER/WIDE(60DEG)BEAM
Additional Forms of Bathymetric Data: ANALOGUE RECORDS,PUNCHED CARDS
Magnetics Instrumentation: VARIAN MFD PROTON PRECESSION MOD 4970
Additional Forms of Magnetics Data: ANAL.RECORDS,CARDS
Topmost Latitude of Survey: -17
Bottommost Latitude: -44
Leftmost Longitude: -150
Rightmost Longitude: -126
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 1SECONDSWEEP
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
Interpolation Scheme: 5 MINUTE INTERVAL
General Digitizing Rate of Magnetics: 050
General Sampling Rate of Magnetics: 06
Reference Field Code: 03
Reference Field: IGRF 1965
Method of Applying Residual Field: LIN. INTERP.POINTS WITHIN ONE DEGREE SQUARE
Number of Data Records: 7485

Min/Max Data Record:
Date: 1974 04 13
Latitude: -43.04310
Longitude: -149.41560
Bathymetry, 2- Way Traveltime: 004426
Bathymetry, Corrected Depth: 338.0
Magnetics Total Field, 1st Sensor: 341780
Magnetics Residual Field: -14020

Min/Max Data Record:
Date: 1974 05 09
Latitude: -17.00680
Longitude: -126.59090
Bathymetry, 2- Way Traveltime: 069950
Bathymetry, Corrected Depth: 5264.0
Magnetics Total Field, 1st Sensor: 470130
Magnetics Residual Field: +08050