Survey Identifier: NAV4074
Format Acronym: ARO88
Data Center File Number: 0480-195
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 C32-651, Flight 4074 ~ 1,209 Nautical Miles
Survey Departure Date (yyyymmdd): 19851012
Survey Arrival Date (yyyymmdd): 19851012
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: 6568
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -11
Bottommost Latitude: -25
Leftmost Longitude: -101
Rightmost Longitude: -077
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: 6569
Datafile Header Info: PJCT=C32-651 FLGT= 4074 ,MTH= 10,DAY= 12, YR=1985,JDY= 285 -TO- 285,RCD= 6573,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -100.0714
Latitude: -24.3975
Mag Total Intensity Calc nT: 26961
Time Gmt Sec: 8653.1639
Mag East Component Obs nT: 26010
Mag North Component Obs nT: 1219
Mag Horizontal Intensity Calc nT: 26760
Mag Vertical Intensity Obs nT: -15259
Mag Declination Calc Deg: 2.5859
Mag Inclination Calc Deg: -29.6853
Mag Total Intensity Obs nT: 26995
Alt Barometric Ft: 100
Min/Max Data Record:
Longitude: -77.1055
Latitude: -11.9533
Mag Total Intensity Calc nT: 30812
Time Gmt Sec: 28839.1189
Mag East Component Obs nT: 27677
Mag North Component Obs nT: 6298
Mag Horizontal Intensity Calc nT: 28204
Mag Vertical Intensity Obs nT: 886
Mag Declination Calc Deg: 13.6090
Mag Inclination Calc Deg: 1.8825
Mag Total Intensity Obs nT: 30806
Alt Barometric Ft: 26000