Survey Identifier: NAV2068


Format Acronym: ARO88
Data Center File Number: 0560-020
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: Donald R. Wilson
Project: Project Magnet: Project D32-451: Flight 2068 ~ 3,366 Nautical Miles
Survey Departure Date (yyyymmdd): 19931122
Survey Arrival Date (yyyymmdd): 19931123
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: 17830
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -08
Bottommost Latitude: -23
Leftmost Longitude: -035
Rightmost Longitude: +018
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: 17823
Datafile Header Info: PJCT=D32-451 FLGT= 2068 ,MTH= 11,DAY= 22, YR=1993,JDY= 326 -TO- 327,RCD= 17832,NAV=GPS ,CMP=RLG

Min/Max Data Record:
Longitude: -34.8050
Latitude: -22.5174
Mag Total Intensity Calc nT: 25719
Time Gmt Sec: 0.7500
Mag East Component Obs nT: 12798
Mag North Component Obs nT: -9378
Mag Horizontal Intensity Calc nT: 13231
Mag Vertical Intensity Obs nT: -26532
Mag Declination Calc Deg: -999.0000
Mag Inclination Calc Deg: -999.0000
Mag Total Intensity Obs nT: 25717
Alt Barometric Ft: 2963

Min/Max Data Record:
Longitude: 17.4566
Latitude: -8.0080
Mag Total Intensity Calc nT: 29923
Time Gmt Sec: 86398.7500
Mag East Component Obs nT: 22175
Mag North Component Obs nT: -3338
Mag Horizontal Intensity Calc nT: 24027
Mag Vertical Intensity Obs nT: -9419
Mag Declination Calc Deg: -14.5748
Mag Inclination Calc Deg: -21.4053
Mag Total Intensity Obs nT: 29943
Alt Barometric Ft: 24846