Survey Identifier: NAV3175
Format Acronym: ARO88
Data Center File Number: 0480-383
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 C32-854, Flight 3175 ~ 3,706 Nautical Miles
Survey Departure Date (yyyymmdd): 19880818
Survey Arrival Date (yyyymmdd): 19880818
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: 19408
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +22
Bottommost Latitude: -10
Leftmost Longitude: +147
Rightmost Longitude: -158
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: 19410
Datafile Header Info: PJCT=C32-854 FLGT= 3175 ,MTH= 8,DAY= 18, YR=1988,JDY= 231 -TO- 231
Min/Max Data Record:
Longitude: -179.9985
Latitude: -9.5277
Mag Total Intensity Calc nT: 32935
Time Gmt Sec: 28467.1589
Mag East Component Obs nT: 27122
Mag North Component Obs nT: 3925
Mag Horizontal Intensity Calc nT: 27660
Mag Vertical Intensity Obs nT: -24243
Mag Declination Calc Deg: 6.3099
Mag Inclination Calc Deg: -34.2588
Mag Total Intensity Obs nT: 32930
Alt Barometric Ft: 1600
Min/Max Data Record:
Longitude: 179.9989
Latitude: 21.1294
Mag Total Intensity Calc nT: 43180
Time Gmt Sec: 67948.0713
Mag East Component Obs nT: 35875
Mag North Component Obs nT: 6129
Mag Horizontal Intensity Calc nT: 36185
Mag Vertical Intensity Obs nT: 22187
Mag Declination Calc Deg: 11.4376
Mag Inclination Calc Deg: 38.6984
Mag Total Intensity Obs nT: 43185
Alt Barometric Ft: 33000