Survey Identifier: NAV4072
Format Acronym: ARO88
Data Center File Number: 0480-142
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 C32-551, Flight 4072 ~ 3,732 Nautical Miles
Survey Departure Date (yyyymmdd): 19841202
Survey Arrival Date (yyyymmdd): 19841202
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: 19474
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +08
Bottommost Latitude: -18
Leftmost Longitude: -166
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: 19475
Datafile Header Info: PJCT=C32-551 FLGT= 4072 ,MTH= 12,DAY= 2, YR=1984,JDY= 337 -TO- 337,RCD= 19477,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -165.0070
Latitude: -17.7359
Mag Total Intensity Calc nT: 32450
Time Gmt Sec: 18028.6169
Mag East Component Obs nT: 30920
Mag North Component Obs nT: 5028
Mag Horizontal Intensity Calc nT: 31354
Mag Vertical Intensity Obs nT: -19523
Mag Declination Calc Deg: 9.0690
Mag Inclination Calc Deg: -31.3262
Mag Total Intensity Obs nT: 32495
Alt Barometric Ft: 532
Min/Max Data Record:
Longitude: -149.5763
Latitude: 7.0587
Mag Total Intensity Calc nT: 37698
Time Gmt Sec: 57877.7876
Mag East Component Obs nT: 33598
Mag North Component Obs nT: 7163
Mag Horizontal Intensity Calc nT: 34138
Mag Vertical Intensity Obs nT: 9691
Mag Declination Calc Deg: 12.8200
Mag Inclination Calc Deg: 17.1561
Mag Total Intensity Obs nT: 37011
Alt Barometric Ft: 26900