Survey Identifier: SHACK877
Format Acronym: MGD77
Data Center File Number: 19050006
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): T.J.G. FRANCIS
Project: SHACKLETON CRUISE 8/77
Funding: BRITISH GOVERNMENT
Survey Departure Date (yyyymmdd): 19770706
Port of Departure: ABERDEEN, SCOTLAND
Survey Arrival Date (yyyymmdd): 19770724
Port of Arrival: REYKJAVIK, ICELAND
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
Additional Forms of Magnetics Data: ANALOGUE
Gravity Instrumentation: LACOSTE-ROMBERG
Additional Forms of Gravity Data: ANALOGUE
Topmost Latitude of Survey: +62
Bottommost Latitude: +58
Leftmost Longitude: -032
Rightmost Longitude: -004
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
Number of Data Records: 12274
Min/Max Data Record:
Date: 1977 07 06
Latitude: +58.93270
Longitude: -31.13950
Bathymetry, Corrected Depth: 13.0
Magnetics Total Field, 1st Sensor: 495310
Magnetics Residual Field: -20750
Free-Air Anomaly: -3880
Min/Max Data Record:
Date: 1977 07 23
Latitude: +61.61130
Longitude: -4.39570
Bathymetry, Corrected Depth: 2870.0
Magnetics Total Field, 1st Sensor: 544500
Magnetics Residual Field: +24400
Free-Air Anomaly: +9970