Survey Identifier: NAV2056
Format Acronym: ARO88
Data Center File Number: 0550-019
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 C32-954: Flight 2056 ~ 3,290 Nautical Miles
Survey Departure Date (yyyymmdd): 19890918
Survey Arrival Date (yyyymmdd): 19890919
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: 16739
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -08
Bottommost Latitude: -35
Leftmost Longitude: -056
Rightmost Longitude: -010
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: 16739
Datafile Header Info: PJCT=C32-954 FLGT= 2056 ,MTH= 9,DAY= 17, YR=1989,JDY= 260 -TO- 261,RCD= 16741,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -55.9416
Latitude: -34.8770
Mag Total Intensity Calc nT: 23540
Time Gmt Sec: 0.7100
Mag East Component Obs nT: 14334
Mag North Component Obs nT: -7331
Mag Horizontal Intensity Calc nT: 15872
Mag Vertical Intensity Obs nT: -22126
Mag Declination Calc Deg: -25.7027
Mag Inclination Calc Deg: -53.7556
Mag Total Intensity Obs nT: 23542
Alt Barometric Ft: 1400
Min/Max Data Record:
Longitude: -10.0426
Latitude: -8.1019
Mag Total Intensity Calc nT: 28536
Time Gmt Sec: 86398.7100
Mag East Component Obs nT: 21309
Mag North Component Obs nT: -2325
Mag Horizontal Intensity Calc nT: 22514
Mag Vertical Intensity Obs nT: -14061
Mag Declination Calc Deg: -6.9294
Mag Inclination Calc Deg: -36.1015
Mag Total Intensity Obs nT: 24439
Alt Barometric Ft: 26600