Survey Identifier: DI187
Format Acronym: MGD77
Data Center File Number: 19100040
Parameters Surveyed Code: 51100
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. P. E. WEAVER
Project: DISCOVERY CRUISE 187
Funding: N.E.R.C.
Survey Departure Date (yyyymmdd): 19891020
Port of Departure: LISBON, PORTUGAL
Survey Arrival Date (yyyymmdd): 19891117
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: +42
Bottommost Latitude: +32
Leftmost Longitude: -015
Rightmost Longitude: -010
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: 17486
Min/Max Data Record:
Date: 1989 10 20
Latitude: +32.47450
Longitude: -14.84290
Bathymetry, 2- Way Traveltime: 006533
Bathymetry, Corrected Depth: 494.0
Min/Max Data Record:
Date: 1989 11 17
Latitude: +41.14280
Longitude: -10.32740
Bathymetry, 2- Way Traveltime: 072933
Bathymetry, Corrected Depth: 5537.0