Survey Identifier: NAV1118
Format Acronym: ARO88
Data Center File Number: 0480-121
Parameters Surveyed Code: FXD
File Creation Date (yyyymmdd): 19890906
Source Institution: US Naval Oceanographic Office
Country: INTERNATIONAL
Platform Name: RP-3D ORION
Platform Type Code: 3
Platform Type: PLANE
Chief Scientists: Fred M. Valentine
Project: Project Magnet: Project C32-454, Flight 1118 ~ 3,410 Nautical Miles
Survey Departure Date (yyyymmdd): 19840902
Survey Arrival Date (yyyymmdd): 19840903
Flight Line Spacings: Single Flight Line, Variable Directions
Magnetometers Used: Vector and Scalar Magnetometers
Aircraft Altitude: 25,000 FT AG
Aircraft Velocity: 240 Knots
Sampling Rate: 2
Sensor Tow Distance: STINGER
Total Observations: 18877
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +17
Bottommost Latitude: +03
Leftmost Longitude: -060
Rightmost Longitude: -005
Archive NGDC Tape Letter: W
Additional Documentation: To remove high frequency noise, a low pass filter has been applied to all the, flight line data above 15,000 feet. Data at the beginning and end of a flight, are noisy because the aircraft is maneuvering during it's climb or descent to, or from survey altitude which is approximately 25,000 feet. Data below 15,000, feet or climb and descent data are not smoothed.
Number of Data Records: 18877
Datafile Header Info: PJCT=C32-454 FLGT= 1118 ,MTH= 9,DAY= 2, YR=1984,JDY= 246 -TO- 246,RCD= 18878,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -59.4883
Latitude: 3.0174
Mag Total Intensity Calc nT: 30073
Time Gmt Sec: 0.4805
Mag East Component Obs nT: 26817
Mag North Component Obs nT: -9511
Mag Horizontal Intensity Calc nT: 27901
Mag Vertical Intensity Obs nT: -9761
Mag Declination Calc Deg: -18.6789
Mag Inclination Calc Deg: -18.5934
Mag Total Intensity Obs nT: 30061
Alt Barometric Ft: 400
Min/Max Data Record:
Longitude: -5.9000
Latitude: 16.6754
Mag Total Intensity Calc nT: 37443
Time Gmt Sec: 86399.9805
Mag East Component Obs nT: 29260
Mag North Component Obs nT: -5071
Mag Horizontal Intensity Calc nT: 30413
Mag Vertical Intensity Obs nT: 24933
Mag Declination Calc Deg: -9.9526
Mag Inclination Calc Deg: 41.7791
Mag Total Intensity Obs nT: 37427
Alt Barometric Ft: 26900