Survey Identifier: CD3388
Format Acronym: MGD77
Data Center File Number: 19180006
Parameters Surveyed Code: 55500
File Creation Date (yyyymmdd): 19930701
Source Institution: INSTITUTE OF OCEANOGRAPHIC SCIENCES, UK
Country: UNITED KINGDOM
Platform Name: CHARLES DARWIN
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): L. M. PARSON
Project: CHARLES DARWIN CRUISE 33 1988
Funding: N.E.R.C.
Survey Departure Date (yyyymmdd): 19880505
Port of Departure: SUVA, FIJI
Survey Arrival Date (yyyymmdd): 19880530
Port of Arrival: WELLINGTON, NEW ZEALAND
Navigation Instrumentation: GPS & MAGNAVOX SATELLITE NAVIGATOR
Geodetic Datum/Position: PRIM-SAT PLUS DEAD RECKONING
Bathymetry Instrumentation: PRECISION ECHO SOUNDER - IOS MK 3
Additional Forms of Bathymetric Data: ANALOGUE
Magnetics Instrumentation: VARIAN V75 PROTON PRECESSION
Additional Forms of Magnetics Data: ANALOGUE
Topmost Latitude of Survey: -16
Bottommost Latitude: -34
Leftmost Longitude: -179
Rightmost Longitude: -174
General Digitizing Rate of Bathymetry: 060
General Sampling Rate of Bathymetry: 2/SEC
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: NONE
General Digitizing Rate of Magnetics: 020
General Sampling Rate of Magnetics: 02
Magnetic Sensor Tow Distance: 250
Reference Field Code: 04
Reference Field: IGRF-85
Method of Applying Residual Field: LINEAR INTERPOLATION PER DEGREE SQUARE
General Digitizing Rate of Gravity: 060
General Sampling Rate of Gravity: 00
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM 1967
Reference System Code: 3
Reference System: IGSN-71
Corrections Applied: CROSS COUPLING PLUS EOTVOS
Number of Data Records: 17470
Min/Max Data Record:
Date: 1988 05 05
Latitude: -33.08770
Longitude: -178.48576
Bathymetry, 2- Way Traveltime: 005773
Bathymetry, Corrected Depth: 441.0
Magnetics Total Field, 1st Sensor: 412650
Magnetics Residual Field: -04930
Free-Air Anomaly: -1580
Min/Max Data Record:
Date: 1988 05 30
Latitude: -16.66720
Longitude: -174.39216
Bathymetry, 2- Way Traveltime: 126066
Bathymetry, Corrected Depth: 9727.0
Magnetics Total Field, 1st Sensor: 511270
Magnetics Residual Field: +08490
Free-Air Anomaly: +1660