Survey Identifier: NAV3158
Format Acronym: ARO88
Data Center File Number: 0480-286
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 C32-851, Flight 3158 ~ 3,435 Nautical Miles
Survey Departure Date (yyyymmdd): 19870129
Survey Arrival Date (yyyymmdd): 19870129
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: 19426
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +29
Bottommost Latitude: +19
Leftmost Longitude: +127
Rightmost Longitude: +153
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: 19428
Datafile Header Info: PJCT=C32-851 FLGT= 3158 ,MTH= 11,DAY= 24, YR=1987,JDY= 328 -TO- 328,RCD= 19429,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: 127.5702
Latitude: 19.9394
Mag Total Intensity Calc nT: 35918
Time Gmt Sec: 43138.6670
Mag East Component Obs nT: 30998
Mag North Component Obs nT: -2701
Mag Horizontal Intensity Calc nT: 31000
Mag Vertical Intensity Obs nT: 14348
Mag Declination Calc Deg: -4.5772
Mag Inclination Calc Deg: 23.5440
Mag Total Intensity Obs nT: 35922
Alt Barometric Ft: 0
Min/Max Data Record:
Longitude: 152.3176
Latitude: 28.4905
Mag Total Intensity Calc nT: 44536
Time Gmt Sec: 83588.4893
Mag East Component Obs nT: 36724
Mag North Component Obs nT: 1165
Mag Horizontal Intensity Calc nT: 36751
Mag Vertical Intensity Obs nT: 28368
Mag Declination Calc Deg: 2.0291
Mag Inclination Calc Deg: 39.6607
Mag Total Intensity Obs nT: 44551
Alt Barometric Ft: 31100