Survey Identifier: NAV2012


Format Acronym: ARO88
Data Center File Number: 0480-014
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 C32-252: Flight 2012 ~ 4,018 Nautical Miles
Survey Departure Date (yyyymmdd): 19820318
Survey Arrival Date (yyyymmdd): 19820319
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: 20686
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +07
Bottommost Latitude: -23
Leftmost Longitude: -044
Rightmost Longitude: +008
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: 20688
Datafile Header Info: PJCT=C32-252 FLGT= 2012 ,MTH= 3,DAY= 18, YR=1982,JDY= 77 -TO- 77,RCD= 20690,NAV=INS2,CMP=INS2

Min/Max Data Record:
Longitude: -43.3395
Latitude: -22.7921
Mag Total Intensity Calc nT: 23774
Time Gmt Sec: 0.2090
Mag East Component Obs nT: 16590
Mag North Component Obs nT: -8570
Mag Horizontal Intensity Calc nT: 17860
Mag Vertical Intensity Obs nT: -22339
Mag Declination Calc Deg: -24.7976
Mag Inclination Calc Deg: -51.0207
Mag Total Intensity Obs nT: 23798
Alt Barometric Ft: 925

Min/Max Data Record:
Longitude: 7.9850
Latitude: 6.5548
Mag Total Intensity Calc nT: 32377
Time Gmt Sec: 86399.2090
Mag East Component Obs nT: 31601
Mag North Component Obs nT: -3252
Mag Horizontal Intensity Calc nT: 31768
Mag Vertical Intensity Obs nT: -6223
Mag Declination Calc Deg: -5.8755
Mag Inclination Calc Deg: -11.0865
Mag Total Intensity Obs nT: 32070
Alt Barometric Ft: 27900