Survey Identifier: NAV3180A
Format Acronym: ARO88
Data Center File Number: 0550-022
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 3180A ~ 2,826 Nautical Miles
Survey Departure Date (yyyymmdd): 19890607
Survey Arrival Date (yyyymmdd): 19890607
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: 14992
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +36
Bottommost Latitude: +14
Leftmost Longitude: +120
Rightmost Longitude: +146
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: 14992
Datafile Header Info: PJCT=C32-953 FLGT= 3180 ,MTH= 6,DAY= 7, YR=1989,JDY= 158 -TO- 158,RCD= 14994,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: 120.1444
Latitude: 14.6360
Mag Total Intensity Calc nT: 37701
Time Gmt Sec: 51121.0039
Mag East Component Obs nT: 29766
Mag North Component Obs nT: -3563
Mag Horizontal Intensity Calc nT: 29894
Mag Vertical Intensity Obs nT: 7942
Mag Declination Calc Deg: -6.7394
Mag Inclination Calc Deg: 11.3073
Mag Total Intensity Obs nT: 37692
Alt Barometric Ft: 200
Min/Max Data Record:
Longitude: 145.4130
Latitude: 35.7449
Mag Total Intensity Calc nT: 46267
Time Gmt Sec: 82114.5332
Mag East Component Obs nT: 39738
Mag North Component Obs nT: 827
Mag Horizontal Intensity Calc nT: 39742
Mag Vertical Intensity Obs nT: 34900
Mag Declination Calc Deg: 1.1934
Mag Inclination Calc Deg: 49.1370
Mag Total Intensity Obs nT: 45705
Alt Barometric Ft: 25000