Survey Identifier: NAV4046
Format Acronym: ARO88
Data Center File Number: 0480-054
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 C32-352: Flight 4046 ~ 2,598 Nautical Miles
Survey Departure Date (yyyymmdd): 19830401
Survey Arrival Date (yyyymmdd): 19830401
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: 12271
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -17
Bottommost Latitude: -44
Leftmost Longitude: +172
Rightmost Longitude: -149
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: 12271
Datafile Header Info: PJCT=C32-352 FLGT= 4046 ,MTH= 4,DAY= 1, YR=1983,JDY= 91 -TO- 91,RCD= 12272,NAV=ESG ,CMP=INS2
Min/Max Data Record:
Longitude: -179.9995
Latitude: -43.7364
Mag Total Intensity Calc nT: 37100
Time Gmt Sec: 30057.6428
Mag East Component Obs nT: 19406
Mag North Component Obs nT: 6664
Mag Horizontal Intensity Calc nT: 21031
Mag Vertical Intensity Obs nT: -54840
Mag Declination Calc Deg: 12.0103
Mag Inclination Calc Deg: -69.0176
Mag Total Intensity Obs nT: 37078
Alt Barometric Ft: 300
Min/Max Data Record:
Longitude: 179.9958
Latitude: -17.6245
Mag Total Intensity Calc nT: 58788
Time Gmt Sec: 57300.3877
Mag East Component Obs nT: 31702
Mag North Component Obs nT: 9225
Mag Horizontal Intensity Calc nT: 32491
Mag Vertical Intensity Obs nT: -18539
Mag Declination Calc Deg: 23.4921
Mag Inclination Calc Deg: -29.9449
Mag Total Intensity Obs nT: 58753
Alt Barometric Ft: 30900