Survey Identifier: NAV3138


Format Acronym: ARO88
Data Center File Number: 0440-048
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: Jesus M. Anglero
Project: Project Magnet: Project C32-751, Flight 3138 ~ 3,723 Nautical Miles
Survey Departure Date (yyyymmdd): 19861220
Survey Arrival Date (yyyymmdd): 19861220
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: 18157
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +30
Bottommost Latitude: -28
Leftmost Longitude: -110
Rightmost Longitude: -090
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: 18159
Datafile Header Info: PJCT=C32-751 FLGT= 3138 ,MTH= 12,DAY= 20, YR=1986,JDY= 354 -TO- 354,RCD= 18160,NAV=ESG ,CMP=ESG

Min/Max Data Record:
Longitude: -109.6499
Latitude: -27.2407
Mag Total Intensity Calc nT: 29945
Time Gmt Sec: 38869.3916
Mag East Component Obs nT: 25119
Mag North Component Obs nT: 1344
Mag Horizontal Intensity Calc nT: 25155
Mag Vertical Intensity Obs nT: -18349
Mag Declination Calc Deg: 3.0623
Mag Inclination Calc Deg: -33.8140
Mag Total Intensity Obs nT: 29918
Alt Barometric Ft: 4900

Min/Max Data Record:
Longitude: -90.2540
Latitude: 29.0535
Mag Total Intensity Calc nT: 49752
Time Gmt Sec: 75890.3623
Mag East Component Obs nT: 30798
Mag North Component Obs nT: 6888
Mag Horizontal Intensity Calc nT: 31134
Mag Vertical Intensity Obs nT: 42902
Mag Declination Calc Deg: 14.5272
Mag Inclination Calc Deg: 59.6156
Mag Total Intensity Obs nT: 49755
Alt Barometric Ft: 29000