Survey Identifier: FAR381
Format Acronym: MGD77
Data Center File Number: 19120003
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): R. C. SEARLE
Project: FARNELLA CRUISE 3/81
Funding: N.E.R.C.
Survey Departure Date (yyyymmdd): 19811107
Port of Departure: PONTA DELGADA, AZORES
Survey Arrival Date (yyyymmdd): 1981
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: +38
Bottommost Latitude: +22
Leftmost Longitude: -030
Rightmost Longitude: -018
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: 9801144
Departure Base Station Description: PONTA DELGADA WHOI 855
Arrival Base Station Gravity: 9801144
Arrival Base Station Description: PONTA DELGADA WHOI 855
Additional Documentation: GRAVITY BASE IS IGSN71 ESTIMATE OF POTSDAM VALUE, FURTHER GRAVITY INFORMATION FROM RVS,BARRY,WALES
Number of Data Records: 13025
Min/Max Data Record:
Date: 1981 11 07
Latitude: +22.92470
Longitude: -29.39410
Bathymetry, Corrected Depth: 1919.0
Magnetics Total Field, 1st Sensor: 365840
Magnetics Residual Field: -51400
Free-Air Anomaly: -2840
Min/Max Data Record:
Date: 1981 11 25
Latitude: +37.39910
Longitude: -18.15200
Bathymetry, Corrected Depth: 5830.0
Magnetics Total Field, 1st Sensor: 648130
Magnetics Residual Field: +08990
Free-Air Anomaly: +9930