Survey Identifier: FAR281L2
Format Acronym: MGD77
Data Center File Number: 19120002
Parameters Surveyed Code: 55511
File Creation Date (yyyymmdd): 19850207
Source Institution: INSTITUTE OF OCEANOGRAPHIC SCIENCES, UK
Country: UNITED KINGDOM
Platform Name: FARNELLA
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): J. REVIE
Project: FARNELLA CRUISE 2/81
Funding: N.E.R.C.
Survey Departure Date (yyyymmdd): 19811018
Port of Departure: ST. JOHNS CANADA
Survey Arrival Date (yyyymmdd): 19811105
Port of Arrival: PONTA DELGADA, AZORES
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: PRIME SAT
Bathymetry Instrumentation: PRECISION ECHO SOUNDER - IOS MK 3
Additional Forms of Bathymetric Data: ANALOGUE
Magnetics Instrumentation: BARINGER PROTON PRECESSION
Additional Forms of Magnetics Data: ANALOGUE
Gravity Instrumentation: LACOSTE AND ROMBERG S84
Additional Forms of Gravity Data: ANALOGUE
Topmost Latitude of Survey: +50
Bottommost Latitude: +37
Leftmost Longitude: -050
Rightmost Longitude: -032
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-75
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: IGSN71
Corrections Applied: CROSS COUPLING + EOTVOS
Departure Base Station Gravity: 9808283
Departure Base Station Description: ST JOHNS 9363-74
Arrival Base Station Gravity: 9801144
Arrival Base Station Description: PONTA DELGADA W.H.O.I. 855
Additional Documentation: PONTA DELGADA BASE IS IGSN ESTIMATE FROM WHOI POTSDAM VALUE, AVERAGE DRIFT RATE FOR CRUISE +0.25 MGAL/DAY, FURTHER GRAVITY INFORMATION FROM RVS,BARRY,WALES
Number of Data Records: 11936
Min/Max Data Record:
Date: 1981 10 18
Latitude: +37.61010
Longitude: -49.50360
Bathymetry, Corrected Depth: 220.0
Magnetics Total Field, 1st Sensor: 453520
Magnetics Residual Field: -10940
Free-Air Anomaly: -5330
Min/Max Data Record:
Date: 1981 11 03
Latitude: +49.37100
Longitude: -32.38160
Bathymetry, Corrected Depth: 5206.0
Magnetics Total Field, 1st Sensor: 523440
Magnetics Residual Field: +04280
Free-Air Anomaly: +9980