Survey Identifier: CD5290
Format Acronym: MGD77
Data Center File Number: 19180009
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): D. G. MASSON
Project: CHARLES DARWIN CRUISE 52 1990
Funding: N.E.R.C.
Survey Departure Date (yyyymmdd): 19900825
Port of Departure: TROON, U.K.
Survey Arrival Date (yyyymmdd): 19900912
Port of Arrival: BARRY ISLAND, U.K.
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: +57
Bottommost Latitude: +51
Leftmost Longitude: -026
Rightmost Longitude: -004
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-90
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: 12751
Min/Max Data Record:
Date: 1990 08 25
Latitude: +51.18429
Longitude: -25.14759
Bathymetry, 2- Way Traveltime: 000439
Bathymetry, Corrected Depth: 33.0
Magnetics Total Field, 1st Sensor: 480020
Magnetics Residual Field: -11110
Free-Air Anomaly: -0360
Min/Max Data Record:
Date: 1990 09 12
Latitude: +56.59609
Longitude: -4.68360
Bathymetry, 2- Way Traveltime: 058026
Bathymetry, Corrected Depth: 4367.0
Magnetics Total Field, 1st Sensor: 511220
Magnetics Residual Field: +10100
Free-Air Anomaly: +0980