Survey Identifier: NAV4054
Format Acronym: ARO88
Data Center File Number: 0480-079
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 C32-451: Flight 4054 ~ 3,960 Nautical Miles
Survey Departure Date (yyyymmdd): 19831215
Survey Arrival Date (yyyymmdd): 19831215
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: 21223
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -17
Bottommost Latitude: -51
Leftmost Longitude: +172
Rightmost Longitude: -142
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: 21223
Datafile Header Info: PJCT=C32-451 FLGT= 4054 ,MTH= 12,DAY= 15, YR=1983,JDY= 349 -TO- 349,RCD= 21224,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -179.9985
Latitude: -50.6104
Mag Total Intensity Calc nT: 37044
Time Gmt Sec: 21606.6838
Mag East Component Obs nT: 8408
Mag North Component Obs nT: -963
Mag Horizontal Intensity Calc nT: 8463
Mag Vertical Intensity Obs nT: -54907
Mag Declination Calc Deg: -6.5338
Mag Inclination Calc Deg: -81.1387
Mag Total Intensity Obs nT: 37235
Alt Barometric Ft: 400
Min/Max Data Record:
Longitude: 179.9983
Latitude: -17.6218
Mag Total Intensity Calc nT: 58870
Time Gmt Sec: 64730.1377
Mag East Component Obs nT: 31668
Mag North Component Obs nT: 10546
Mag Horizontal Intensity Calc nT: 32449
Mag Vertical Intensity Obs nT: -18533
Mag Declination Calc Deg: 28.7133
Mag Inclination Calc Deg: -29.9763
Mag Total Intensity Obs nT: 58529
Alt Barometric Ft: 29000