Survey Identifier: NAV3111
Format Acronym: ARO88
Data Center File Number: 0480-167
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 C32-553, Flight 3111 ~ 3,819 Nautical Miles
Survey Departure Date (yyyymmdd): 19850516
Survey Arrival Date (yyyymmdd): 19850517
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: 19741
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +22
Bottommost Latitude: +07
Leftmost Longitude: +144
Rightmost Longitude: -158
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: 19743
Datafile Header Info: PJCT=C32-553 FLGT= 3111 ,MTH= 5,DAY= 16, YR=1985,JDY= 136 -TO- 136,RCD= 19745,NAV=ESG ,CMP=INS1
Min/Max Data Record:
Longitude: -179.9994
Latitude: 7.7067
Mag Total Intensity Calc nT: 32999
Time Gmt Sec: 1.2432
Mag East Component Obs nT: 27184
Mag North Component Obs nT: 980
Mag Horizontal Intensity Calc nT: 27682
Mag Vertical Intensity Obs nT: 172
Mag Declination Calc Deg: 1.5701
Mag Inclination Calc Deg: 0.2796
Mag Total Intensity Obs nT: 33000
Alt Barometric Ft: 3383
Min/Max Data Record:
Longitude: 179.9976
Latitude: 21.1066
Mag Total Intensity Calc nT: 36375
Time Gmt Sec: 86399.2441
Mag East Component Obs nT: 35755
Mag North Component Obs nT: 6360
Mag Horizontal Intensity Calc nT: 35769
Mag Vertical Intensity Obs nT: 22507
Mag Declination Calc Deg: 11.5450
Mag Inclination Calc Deg: 38.8437
Mag Total Intensity Obs nT: 36413
Alt Barometric Ft: 26000