Survey Identifier: NAV4080
Format Acronym: ARO88
Data Center File Number: 0480-210
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 4080 ~ 4,075 Nautical Miles
Survey Departure Date (yyyymmdd): 19851130
Survey Arrival Date (yyyymmdd): 19851130
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: 21223
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -43
Bottommost Latitude: -76
Leftmost Longitude: +172
Rightmost Longitude: -174
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: 21224
Datafile Header Info: PJCT=C32-651 FLGT= 4080 ,MTH= 11,DAY= 30, YR=1985,JDY= 334 -TO- 334,RCD= 21225,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -179.9990
Latitude: -75.2256
Mag Total Intensity Calc nT: 58353
Time Gmt Sec: 28294.5540
Mag East Component Obs nT: -4211
Mag North Component Obs nT: 7272
Mag Horizontal Intensity Calc nT: 7398
Mag Vertical Intensity Obs nT: -64999
Mag Declination Calc Deg: 21.8651
Mag Inclination Calc Deg: -83.4869
Mag Total Intensity Obs nT: 58346
Alt Barometric Ft: 300
Min/Max Data Record:
Longitude: 179.9990
Latitude: -43.3460
Mag Total Intensity Calc nT: 65449
Time Gmt Sec: 71230.3154
Mag East Component Obs nT: 19939
Mag North Component Obs nT: 9323
Mag Horizontal Intensity Calc nT: 21509
Mag Vertical Intensity Obs nT: -54342
Mag Declination Calc Deg: 119.9039
Mag Inclination Calc Deg: -68.4070
Mag Total Intensity Obs nT: 65456
Alt Barometric Ft: 35100