Survey Identifier: NAV4098
Format Acronym: ARO88
Data Center File Number: 0480-256
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 C32-754, Flight 4098 ~ 3,881 Nautical Miles
Survey Departure Date (yyyymmdd): 19870804
Survey Arrival Date (yyyymmdd): 19870805
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: 20419
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +22
Bottommost Latitude: -10
Leftmost Longitude: +120
Rightmost Longitude: +148
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: 20420
Datafile Header Info: PJCT=C32-754 FLGT= 4098 ,MTH= 8,DAY= 4, YR=1987,JDY= 216 -TO- 216,RCD= 20422,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: 120.0994
Latitude: -9.5521
Mag Total Intensity Calc nT: 36587
Time Gmt Sec: 0.4103
Mag East Component Obs nT: 35852
Mag North Component Obs nT: -1518
Mag Horizontal Intensity Calc nT: 36069
Mag Vertical Intensity Obs nT: -21356
Mag Declination Calc Deg: -2.3188
Mag Inclination Calc Deg: -30.6279
Mag Total Intensity Obs nT: 36590
Alt Barometric Ft: 300
Min/Max Data Record:
Longitude: 147.1829
Latitude: 21.1859
Mag Total Intensity Calc nT: 42613
Time Gmt Sec: 86399.9111
Mag East Component Obs nT: 39517
Mag North Component Obs nT: 3995
Mag Horizontal Intensity Calc nT: 39518
Mag Vertical Intensity Obs nT: 20027
Mag Declination Calc Deg: 6.3540
Mag Inclination Calc Deg: 28.0699
Mag Total Intensity Obs nT: 43233
Alt Barometric Ft: 28100