Survey Identifier: CD3588
Format Acronym: MGD77
Data Center File Number: 19180007
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): R. C. SEARLE
Project: CHARLES DARWIN CRUISE 35 1988
Funding: N.E.R.C.
Survey Departure Date (yyyymmdd): 19881013
Port of Departure: PAPEETE, TAHITI
Survey Arrival Date (yyyymmdd): 19881116
Port of Arrival: VALPARAISO, CHILE
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: -17
Bottommost Latitude: -32
Leftmost Longitude: -150
Rightmost Longitude: -076
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: 24255
Min/Max Data Record:
Date: 1988 10 13
Latitude: -31.86099
Longitude: -149.40029
Bathymetry, 2- Way Traveltime: 008799
Bathymetry, Corrected Depth: 660.0
Magnetics Total Field, 1st Sensor: 261890
Magnetics Residual Field: -09690
Free-Air Anomaly: -0440
Min/Max Data Record:
Date: 1988 11 16
Latitude: -17.27290
Longitude: -76.25959
Bathymetry, 2- Way Traveltime: 067466
Bathymetry, Corrected Depth: 5081.0
Magnetics Total Field, 1st Sensor: 373460
Magnetics Residual Field: +07850
Free-Air Anomaly: +0800