Survey Identifier: NAV4056
Format Acronym: ARO88
Data Center File Number: 0480-084
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 C32-451: Flight 4056 ~ 3,838 Nautical Miles
Survey Departure Date (yyyymmdd): 19831218
Survey Arrival Date (yyyymmdd): 19831218
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: 20206
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +17
Bottommost Latitude: -18
Leftmost Longitude: -150
Rightmost Longitude: -099
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: 20208
Datafile Header Info: PJCT=C32-451 FLGT= 4056 ,MTH= 12,DAY= 18, YR=1983,JDY= 352 -TO- 352,RCD= 20705,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -149.6827
Latitude: -17.5811
Mag Total Intensity Calc nT: 31604
Time Gmt Sec: 10862.6060
Mag East Component Obs nT: 29673
Mag North Component Obs nT: 3869
Mag Horizontal Intensity Calc nT: 29925
Mag Vertical Intensity Obs nT: -18686
Mag Declination Calc Deg: 7.4265
Mag Inclination Calc Deg: -30.4186
Mag Total Intensity Obs nT: 1
Alt Barometric Ft: 0
Min/Max Data Record:
Longitude: -99.6344
Latitude: 16.7485
Mag Total Intensity Calc nT: 41236
Time Gmt Sec: 54467.1338
Mag East Component Obs nT: 31810
Mag North Component Obs nT: 7237
Mag Horizontal Intensity Calc nT: 32616
Mag Vertical Intensity Obs nT: 28239
Mag Declination Calc Deg: 12.8750
Mag Inclination Calc Deg: 43.3307
Mag Total Intensity Obs nT: 59422
Alt Barometric Ft: 27900