Survey Identifier: NAV1142
Format Acronym: ARO88
Data Center File Number: 0480-189
Parameters Surveyed Code: FXD
File Creation Date (yyyymmdd): 19890906
Source Institution: US Naval Oceanographic Office
Country: INTERNATIONAL
Platform Name: RP-3D ORION
Platform Type Code: 3
Platform Type: PLANE
Chief Scientists: Fred M. Valentine
Project: Project Magnet: Project C32-554, Flight 1142 ~ 3,791 Nautical Miles
Survey Departure Date (yyyymmdd): 19850907
Survey Arrival Date (yyyymmdd): 19850908
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: 21487
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +78
Bottommost Latitude: +61
Leftmost Longitude: -150
Rightmost Longitude: -044
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: 21486
Datafile Header Info: PJCT=C32-554 FLGT= 1142 ,MTH= 9,DAY= 7, YR=1985,JDY= 250 -TO- 250,RCD= 21488,NAV=ESG ,CMP=INS2
Min/Max Data Record:
Longitude: -149.8298
Latitude: 61.2541
Mag Total Intensity Calc nT: 54511
Time Gmt Sec: 0.0645
Mag East Component Obs nT: 626
Mag North Component Obs nT: -6818
Mag Horizontal Intensity Calc nT: 744
Mag Vertical Intensity Obs nT: 53333
Mag Declination Calc Deg: -68.9060
Mag Inclination Calc Deg: 73.8936
Mag Total Intensity Obs nT: 54514
Alt Barometric Ft: 400
Min/Max Data Record:
Longitude: -44.3451
Latitude: 77.1146
Mag Total Intensity Calc nT: 58918
Time Gmt Sec: 86398.0654
Mag East Component Obs nT: 14214
Mag North Component Obs nT: 6900
Mag Horizontal Intensity Calc nT: 15582
Mag Vertical Intensity Obs nT: 58883
Mag Declination Calc Deg: 54.1236
Mag Inclination Calc Deg: 89.2723
Mag Total Intensity Obs nT: 58916
Alt Barometric Ft: 26000