Survey Identifier: NAV4140
Format Acronym: ARO88
Data Center File Number: 0550-049
Parameters Surveyed Code: FXD
File Creation Date (yyyymmdd): 19940506
Source Institution: US Naval Oceanographic Office
Country: INTERNATIONAL
Platform Name: RP-3D ORION
Platform Type Code: 3
Platform Type: PLANE
Chief Scientists: Virgil R. Bettencourt
Project: Project Magnet: Project C32-051: Flight 4140 ~ 2,384 Nautical Miles
Survey Departure Date (yyyymmdd): 19891029
Survey Arrival Date (yyyymmdd): 19891029
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: 12886
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -01
Bottommost Latitude: -28
Leftmost Longitude: -110
Rightmost Longitude: -079
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: 12886
Datafile Header Info: PJCT=C32-051 FLGT= FLT4140 ,MTH= 10,DAY= 29, YR=1989,JDY= 302 -TO- 302,RCD= 12888,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -109.5602
Latitude: -27.1969
Mag Total Intensity Calc nT: 28279
Time Gmt Sec: 15122.4099
Mag East Component Obs nT: 25596
Mag North Component Obs nT: 894
Mag Horizontal Intensity Calc nT: 26606
Mag Vertical Intensity Obs nT: -21639
Mag Declination Calc Deg: 1.7951
Mag Inclination Calc Deg: -38.6723
Mag Total Intensity Obs nT: 28277
Alt Barometric Ft: -100
Min/Max Data Record:
Longitude: -79.8844
Latitude: -1.9935
Mag Total Intensity Calc nT: 34914
Time Gmt Sec: 41339.8350
Mag East Component Obs nT: 28788
Mag North Component Obs nT: 7737
Mag Horizontal Intensity Calc nT: 28841
Mag Vertical Intensity Obs nT: 10349
Mag Declination Calc Deg: 16.6271
Mag Inclination Calc Deg: 19.8987
Mag Total Intensity Obs nT: 34171
Alt Barometric Ft: 26100