Survey Identifier: NAV4108
Format Acronym: ARO88
Data Center File Number: 0480-272
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 C32-852, Flight 4108 ~ 3,442 Nautical Miles
Survey Departure Date (yyyymmdd): 19880218
Survey Arrival Date (yyyymmdd): 19880218
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: 18559
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +29
Bottommost Latitude: -01
Leftmost Longitude: -178
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: 18560
Datafile Header Info: PJCT=C32-852 FLGT= 4108 ,MTH= 2,DAY= 18, YR=1988,JDY= 49 -TO- 49,RCD= 18562,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -177.3618
Latitude: -0.0379
Mag Total Intensity Calc nT: 32823
Time Gmt Sec: 29484.4338
Mag East Component Obs nT: 24626
Mag North Component Obs nT: -10927
Mag Horizontal Intensity Calc nT: 26330
Mag Vertical Intensity Obs nT: -20647
Mag Declination Calc Deg: -23.2417
Mag Inclination Calc Deg: -37.7810
Mag Total Intensity Obs nT: 32818
Alt Barometric Ft: 200
Min/Max Data Record:
Longitude: -158.0921
Latitude: 28.2148
Mag Total Intensity Calc nT: 37055
Time Gmt Sec: 67616.3096
Mag East Component Obs nT: 33760
Mag North Component Obs nT: 6294
Mag Horizontal Intensity Calc nT: 34308
Mag Vertical Intensity Obs nT: 25201
Mag Declination Calc Deg: 11.7398
Mag Inclination Calc Deg: 43.5139
Mag Total Intensity Obs nT: 36614
Alt Barometric Ft: 26000