Survey Identifier: DI93L1-2
Format Acronym: MGD77
Data Center File Number: 19100008
Parameters Surveyed Code: 55500
File Creation Date (yyyymmdd): 19830425
Source Institution: INSTITUTE OF OCEANOGRAPHIC SCIENCES, UK
Country: UNITED KINGDOM
Platform Name: DISCOVERY
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): DR. B. WHITMARSH
Project: DISCOVERY CRUISE 93 LEG1
Funding: BRITISH GOVERNMENT
Survey Departure Date (yyyymmdd): 19780526
Port of Departure: LISBON, PORTUGAL
Survey Arrival Date (yyyymmdd): 19780705
Port of Arrival: BARRY WALES
Navigation Instrumentation: MAGNAVOX SATELLITE RECEIVER
Geodetic Datum/Position: SAT PLUS DR
Bathymetry Instrumentation: IOS PES MARK 3 10KHZ 20DEG 2SEC 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: +38
Leftmost Longitude: -028
Rightmost Longitude: -008
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: 0250
Reference Field Code: 04
Reference Field: IGRF75
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: 9800757
Departure Base Station Description: LISBON A
Arrival Base Station Gravity: 9801108
Arrival Base Station Description: PONTA DELGADA IGB11175
Additional Documentation: IN PORT 780613-780616 PONTA DELGADA, AZONES
Number of Data Records: 24367
Min/Max Data Record:
Date: 1978 05 26
Latitude: +38.05020
Longitude: -27.68380
Bathymetry, Corrected Depth: 181.0
Magnetics Total Field, 1st Sensor: 443760
Magnetics Residual Field: -05960
Free-Air Anomaly: -0490
Min/Max Data Record:
Date: 1978 07 03
Latitude: +49.07450
Longitude: -8.66730
Bathymetry, Corrected Depth: 5347.0
Magnetics Total Field, 1st Sensor: 478120
Magnetics Residual Field: +03480
Free-Air Anomaly: +1180