Survey Identifier: DI144
Format Acronym: MGD77
Data Center File Number: 19100035
Parameters Surveyed Code: 55500
File Creation Date (yyyymmdd): 19930701
Source Institution: INSTITUTE OF OCEANOGRAPHIC SCIENCES, UK
Country: UNITED KINGDOM
Platform Name: DISCOVERY
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): P. J. SCHULTHEISS
Project: DISCOVERY CRUISE 144
Funding: N.E.R.C.
Survey Departure Date (yyyymmdd): 19840123
Port of Departure: DAKAR, SENEGAL
Survey Arrival Date (yyyymmdd): 19840218
Port of Arrival: GIBRALTER
Navigation Instrumentation: 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: +34
Bottommost Latitude: +16
Leftmost Longitude: -026
Rightmost Longitude: -012
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-80
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: 18834
Min/Max Data Record:
Date: 1984 01 23
Latitude: +16.05029
Longitude: -25.35229
Bathymetry, 2- Way Traveltime: 038853
Bathymetry, Corrected Depth: 2926.0
Magnetics Total Field, 1st Sensor: 344440
Magnetics Residual Field: -05870
Free-Air Anomaly: -0340
Min/Max Data Record:
Date: 1984 02 18
Latitude: +33.35009
Longitude: -12.85029
Bathymetry, 2- Way Traveltime: 071773
Bathymetry, Corrected Depth: 5447.0
Magnetics Total Field, 1st Sensor: 410790
Magnetics Residual Field: +07550
Free-Air Anomaly: +0370