Survey Identifier: NAV4137
Format Acronym: ARO88
Data Center File Number: 0550-046
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 C32-953: Flight 4137 ~ 3,656 Nautical Miles
Survey Departure Date (yyyymmdd): 19890624
Survey Arrival Date (yyyymmdd): 19890624
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: 19423
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +14
Bottommost Latitude: -18
Leftmost Longitude: -171
Rightmost Longitude: -149
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: 19423
Datafile Header Info: PJCT=C32-953 FLGT= 4137 ,MTH= 6,DAY= 24, YR=1989,JDY= 175 -TO- 175,RCD= 19425,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -170.6634
Latitude: -17.7578
Mag Total Intensity Calc nT: 32619
Time Gmt Sec: 28497.3918
Mag East Component Obs nT: 29600
Mag North Component Obs nT: 4898
Mag Horizontal Intensity Calc nT: 30046
Mag Vertical Intensity Obs nT: -19876
Mag Declination Calc Deg: 8.9607
Mag Inclination Calc Deg: -31.1500
Mag Total Intensity Obs nT: 32587
Alt Barometric Ft: 300
Min/Max Data Record:
Longitude: -149.5227
Latitude: 13.0916
Mag Total Intensity Calc nT: 39852
Time Gmt Sec: 70128.1494
Mag East Component Obs nT: 34025
Mag North Component Obs nT: 7255
Mag Horizontal Intensity Calc nT: 34734
Mag Vertical Intensity Obs nT: 14547
Mag Declination Calc Deg: 12.8215
Mag Inclination Calc Deg: 25.8335
Mag Total Intensity Obs nT: 39824
Alt Barometric Ft: 27000