Survey Identifier: NAV4149
Format Acronym: ARO88
Data Center File Number: 0550-055
Parameters Surveyed Code: FXD
File Creation Date (yyyymmdd): 19940506
Source Institution: US Naval Oceanographic Office
Country: INTERNATIONAL
Platform Name: RP-3D ORION
Platform Type Code: 3
Platform Type: PLANE
Chief Scientists: Virgil R. Bettencourt
Project: Project Magnet: Project C32-052: Flight 4149 ~ 3,291 Nautical Miles
Survey Departure Date (yyyymmdd): 19900331
Survey Arrival Date (yyyymmdd): 19900331
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: 16644
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +25
Bottommost Latitude: -18
Leftmost Longitude: -150
Rightmost Longitude: -110
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: 16644
Datafile Header Info: PJCT=C32-052 FLGT= 4149 ,MTH= 3,DAY= 31, YR=1990,JDY= 90 -TO- 90,RCD= 16646,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -149.6062
Latitude: -17.5528
Mag Total Intensity Calc nT: 31564
Time Gmt Sec: 14107.2400
Mag East Component Obs nT: 27538
Mag North Component Obs nT: 4663
Mag Horizontal Intensity Calc nT: 27937
Mag Vertical Intensity Obs nT: -18715
Mag Declination Calc Deg: 8.8635
Mag Inclination Calc Deg: -30.7789
Mag Total Intensity Obs nT: 31556
Alt Barometric Ft: 0
Min/Max Data Record:
Longitude: -110.3565
Latitude: 24.0951
Mag Total Intensity Calc nT: 44258
Time Gmt Sec: 50291.6489
Mag East Component Obs nT: 31707
Mag North Component Obs nT: 7199
Mag Horizontal Intensity Calc nT: 32425
Mag Vertical Intensity Obs nT: 34172
Mag Declination Calc Deg: 12.9000
Mag Inclination Calc Deg: 50.6176
Mag Total Intensity Obs nT: 44267
Alt Barometric Ft: 29100