Survey Identifier: DI188


Format Acronym: MGD77
Data Center File Number: 19100041
Parameters Surveyed Code: 51500
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): D. G. MASSON
Project: DISCOVERY CRUISE 188
Funding: N.E.R.C.
Survey Departure Date (yyyymmdd): 19900127
Port of Departure: BARRY ISLAND, U.K.
Survey Arrival Date (yyyymmdd): 19900223
Port of Arrival: FUNCHAL, MADERIA
Navigation Instrumentation: GPS & MAGNAVOX SATELLITE NAVIGATOR
Geodetic Datum/Position: PRIM-SAT PLUS DEAD RECKONING
Bathymetry Instrumentation: PRECISION ECHO SOUNDER - IOS MK 4
Additional Forms of Bathymetric Data: ANALOGUE
Magnetics Instrumentation: VARIAN V75 PROTON PRECESSION
Additional Forms of Magnetics Data: ANALOGUE
Topmost Latitude of Survey: +48
Bottommost Latitude: +27
Leftmost Longitude: -023
Rightmost Longitude: -009
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: 26755

Min/Max Data Record:
Date: 1990 01 27
Latitude: +27.52270
Longitude: -22.79150
Bathymetry, 2- Way Traveltime: 018199
Bathymetry, Corrected Depth: 1372.0
Free-Air Anomaly: -0780

Min/Max Data Record:
Date: 1990 02 23
Latitude: +47.99949
Longitude: -9.97299
Bathymetry, 2- Way Traveltime: 068346
Bathymetry, Corrected Depth: 5175.0
Free-Air Anomaly: +1320