Survey Identifier: NAV3181
Format Acronym: ARO88
Data Center File Number: 0550-024
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 3181 ~ 3,097 Nautical Miles
Survey Departure Date (yyyymmdd): 19890611
Survey Arrival Date (yyyymmdd): 19890611
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: 16368
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +23
Bottommost Latitude: +12
Leftmost Longitude: +113
Rightmost Longitude: +145
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: 16368
Datafile Header Info: PJCT=C32-953 FLGT= 3181 ,MTH= 6,DAY= 11, YR=1989,JDY= 162 -TO- 162,RCD= 16370,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: 113.8265
Latitude: 12.9461
Mag Total Intensity Calc nT: 34950
Time Gmt Sec: 49650.6499
Mag East Component Obs nT: 34249
Mag North Component Obs nT: -1537
Mag Horizontal Intensity Calc nT: 34253
Mag Vertical Intensity Obs nT: 6392
Mag Declination Calc Deg: -2.3761
Mag Inclination Calc Deg: 10.0920
Mag Total Intensity Obs nT: 36326
Alt Barometric Ft: 300
Min/Max Data Record:
Longitude: 144.7955
Latitude: 22.2930
Mag Total Intensity Calc nT: 44599
Time Gmt Sec: 83870.5479
Mag East Component Obs nT: 38755
Mag North Component Obs nT: 1660
Mag Horizontal Intensity Calc nT: 38768
Mag Vertical Intensity Obs nT: 23065
Mag Declination Calc Deg: 2.6535
Mag Inclination Calc Deg: 31.1603
Mag Total Intensity Obs nT: 44461
Alt Barometric Ft: 27000