Survey Identifier: DI91
Format Acronym: MGD77
Data Center File Number: 19100009
Parameters Surveyed Code: 55500
File Creation Date (yyyymmdd): 19830406
Source Institution: INSTITUTE OF OCEANOGRAPHIC SCIENCES, UK
Country: UNITED KINGDOM
Platform Name: DISCOVERY
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): R. C. SEARLE
Project: DISCOVERY CRUISE 91
Funding: BRITISH GOVERNMEMT
Survey Departure Date (yyyymmdd): 19780305
Port of Departure: BREST, FRANCE
Survey Arrival Date (yyyymmdd): 19780327
Port of Arrival: SOUTHAMPTON, ENGLAND
Navigation Instrumentation: MAGNAVOX SATELLITE RECEIVER
Geodetic Datum/Position: SAT PLUS DR
Bathymetry Instrumentation: IOS PES MARK 3 10KHZ 20DEG 2DEG SWEEP
Additional Forms of Bathymetric Data: ANALOGUE
Magnetics Instrumentation: PROTON PRECESSION VARIAN V75
Additional Forms of Magnetics Data: ANALOGUE
Gravity Instrumentation: LACOSTE AND ROMBERG S40
Additional Forms of Gravity Data: ANALOGUE
Topmost Latitude of Survey: +50
Bottommost Latitude: +37
Leftmost Longitude: -031
Rightmost Longitude: -004
General Digitizing Rate of Bathymetry: 060
General Sampling Rate of Bathymetry: 2 SEC
Assumed Sound Velocity: 08000
Bathymetric Datum Code: 00
Interpolation Scheme: NONE
General Digitizing Rate of Magnetics: 020
General Sampling Rate of Magnetics: 02
Magnetic Sensor Tow Distance: 0250
Reference Field Code: 03
Reference Field: IGRF65
Method of Applying Residual Field: LIN INTERP 1*1 DEG SQUARE
General Digitizing Rate of Gravity: 020
General Sampling Rate of Gravity: 01
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM 1967
Reference System Code: 3
Reference System: SYSTEM IGSN71
Corrections Applied: CROSS COUPLING
Departure Base Station Gravity: 9809397
Departure Base Station Description: BREST(4215)
Arrival Base Station Gravity: 9811139
Arrival Base Station Description: SOUTHAMPTON DOCKS(IOS)
Number of Data Records: 15797
Min/Max Data Record:
Date: 1978 03 05
Latitude: +37.43630
Longitude: -30.47570
Bathymetry, Corrected Depth: 67.0
Magnetics Total Field, 1st Sensor: 434160
Magnetics Residual Field: -14940
Free-Air Anomaly: -9600
Min/Max Data Record:
Date: 1978 03 27
Latitude: +49.43220
Longitude: -4.57400
Bathymetry, Corrected Depth: 2955.0
Magnetics Total Field, 1st Sensor: 473560
Magnetics Residual Field: +11720
Free-Air Anomaly: +1250