Survey Identifier: NAV3123A
Format Acronym: ARO88
Data Center File Number: 0480-199
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 3123A ~ 3,414 Nautical Miles
Survey Departure Date (yyyymmdd): 19851019
Survey Arrival Date (yyyymmdd): 19851019
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: 18073
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +04
Bottommost Latitude: -15
Leftmost Longitude: -171
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: 18073
Datafile Header Info: PJCT=C32-651 FLGT= 3123A ,MTH= 10,DAY= 19, YR=1985,JDY= 292 -TO- 292,RCD= 18074,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -170.8145
Latitude: -14.4704
Mag Total Intensity Calc nT: 32397
Time Gmt Sec: 30741.0669
Mag East Component Obs nT: 31509
Mag North Component Obs nT: 4889
Mag Horizontal Intensity Calc nT: 31894
Mag Vertical Intensity Obs nT: -20097
Mag Declination Calc Deg: 8.7748
Mag Inclination Calc Deg: -30.5388
Mag Total Intensity Obs nT: 32402
Alt Barometric Ft: 100
Min/Max Data Record:
Longitude: -149.9783
Latitude: 3.0930
Mag Total Intensity Calc nT: 39918
Time Gmt Sec: 67776.5273
Mag East Component Obs nT: 33978
Mag North Component Obs nT: 7133
Mag Horizontal Intensity Calc nT: 34661
Mag Vertical Intensity Obs nT: 5688
Mag Declination Calc Deg: 12.0201
Mag Inclination Calc Deg: 10.1100
Mag Total Intensity Obs nT: 39908
Alt Barometric Ft: 31400