Survey Identifier: SHACK676
Format Acronym: MGD77
Data Center File Number: 19050005
Parameters Surveyed Code: 55500
File Creation Date (yyyymmdd): 19831202
Source Institution: INSTITUTE OF OCEANOGRAPHIC SCIENCES
Country: UNITED KINGDOM
Platform Name: SHACKLETON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): D. ROBERTS
Project: SHACKLETON CRUISE 6/76
Funding: BRITISH GOVERNMENT
Survey Departure Date (yyyymmdd): 19761027
Port of Departure: BARRY, WALES
Survey Arrival Date (yyyymmdd): 19761118
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 PRECESION VARIAN TYPE 4937
Additional Forms of Magnetics Data: ANALOGUE
Gravity Instrumentation: LACOSTE-ROMBERG S40
Additional Forms of Gravity Data: ANALOGUE
Topmost Latitude of Survey: +52
Bottommost Latitude: +42
Leftmost Longitude: -017
Rightmost Longitude: -003
General Digitizing Rate of Bathymetry: 020
General Sampling Rate of Bathymetry: 2 SEC
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: 2 MINUTE LINEAR INTERPOLATION FROM 6 MIN SAMPLES
General Digitizing Rate of Magnetics: 020
General Sampling Rate of Magnetics: 02
Magnetic Sensor Tow Distance: 0500
Reference Field Code: 04
Reference Field: IGRF 75
Method of Applying Residual Field: LIN. INTERP 1X1 DEG SQUARE
General Digitizing Rate of Gravity: 020
General Sampling Rate of Gravity: 1
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM 1967
Reference System Code: 2
Reference System: POTSDAM
Corrections Applied: DRIFT + EOTVOS
Departure Base Station Gravity: 9812052
Departure Base Station Description: BARRY, WALES
Arrival Base Station Gravity: 9812052
Arrival Base Station Description: BARRY, WALES
Number of Data Records: 13139
Min/Max Data Record:
Date: 1976 10 28
Latitude: +42.46110
Longitude: -16.55050
Bathymetry, Corrected Depth: 62.0
Magnetics Total Field, 1st Sensor: 449150
Magnetics Residual Field: -04960
Free-Air Anomaly: -8960
Min/Max Data Record:
Date: 1976 11 18
Latitude: +51.28640
Longitude: -3.47510
Bathymetry, Corrected Depth: 5529.0
Magnetics Total Field, 1st Sensor: 655530
Magnetics Residual Field: +03800
Free-Air Anomaly: +9970