Survey Identifier: NAV3174
Format Acronym: ARO88
Data Center File Number: 0480-382
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 3174 ~ 3,813 Nautical Miles
Survey Departure Date (yyyymmdd): 19880718
Survey Arrival Date (yyyymmdd): 19880718
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: 19102
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: 19103
Datafile Header Info: PJCT=C32-854 FLGT= 3174 ,MTH= 7,DAY= 18, YR=1988,JDY= 200 -TO- 200
Min/Max Data Record:
Longitude: -179.9988
Latitude: -9.5152
Mag Total Intensity Calc nT: 32927
Time Gmt Sec: 37668.1196
Mag East Component Obs nT: 27107
Mag North Component Obs nT: 3860
Mag Horizontal Intensity Calc nT: 27574
Mag Vertical Intensity Obs nT: -24146
Mag Declination Calc Deg: 6.1133
Mag Inclination Calc Deg: -34.0104
Mag Total Intensity Obs nT: 32933
Alt Barometric Ft: 600
Min/Max Data Record:
Longitude: 179.9983
Latitude: 21.2773
Mag Total Intensity Calc nT: 43581
Time Gmt Sec: 76534.4238
Mag East Component Obs nT: 36317
Mag North Component Obs nT: 5969
Mag Horizontal Intensity Calc nT: 36548
Mag Vertical Intensity Obs nT: 22796
Mag Declination Calc Deg: 11.6980
Mag Inclination Calc Deg: 39.4823
Mag Total Intensity Obs nT: 43163
Alt Barometric Ft: 28000