Survey Identifier: NAV3177


Format Acronym: ARO88
Data Center File Number: 0550-021
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 C32-951: Flight 3177 ~ 3,342 Nautical Miles
Survey Departure Date (yyyymmdd): 19881103
Survey Arrival Date (yyyymmdd): 19881103
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: 18546
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +22
Bottommost Latitude: -21
Leftmost Longitude: -171
Rightmost Longitude: -157
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: 18546
Datafile Header Info: PJCT=C32-951 FLGT= 3177 ,MTH= 11,DAY= 3, YR=1988,JDY= 308 -TO- 308,RCD= 18548,NAV=ESG ,CMP=ESG

Min/Max Data Record:
Longitude: -170.9090
Latitude: -20.0366
Mag Total Intensity Calc nT: 32526
Time Gmt Sec: 28182.5540
Mag East Component Obs nT: -14170
Mag North Component Obs nT: 4785
Mag Horizontal Intensity Calc nT: 27546
Mag Vertical Intensity Obs nT: -23510
Mag Declination Calc Deg: 8.7967
Mag Inclination Calc Deg: -36.5563
Mag Total Intensity Obs nT: 32511
Alt Barometric Ft: -100

Min/Max Data Record:
Longitude: -157.9588
Latitude: 21.3051
Mag Total Intensity Calc nT: 39589
Time Gmt Sec: 66833.8311
Mag East Component Obs nT: 33832
Mag North Component Obs nT: 31038
Mag Horizontal Intensity Calc nT: 34524
Mag Vertical Intensity Obs nT: 22871
Mag Declination Calc Deg: 114.5391
Mag Inclination Calc Deg: 39.5749
Mag Total Intensity Obs nT: 39623
Alt Barometric Ft: 26000