Survey Identifier: NAV4027
Format Acronym: ARO88
Data Center File Number: 0480-034
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 C32-254: Flight 4027 ~ 4,100 Nautical Miles
Survey Departure Date (yyyymmdd): 19820819
Survey Arrival Date (yyyymmdd): 19820819
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: 21607
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +22
Bottommost Latitude: -44
Leftmost Longitude: +172
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: 21608
Datafile Header Info: PJCT=C32-254 FLGT= 4027 ,MTH= 8,DAY= 19, YR=1982,JDY= 231 -TO- 231,RCD= 21609,NAV=ESG ,CMP=INS1
Min/Max Data Record:
Longitude: -179.9999
Latitude: -43.2674
Mag Total Intensity Calc nT: 32781
Time Gmt Sec: 32627.1099
Mag East Component Obs nT: 19854
Mag North Component Obs nT: 5175
Mag Horizontal Intensity Calc nT: 21451
Mag Vertical Intensity Obs nT: -54430
Mag Declination Calc Deg: 9.7815
Mag Inclination Calc Deg: -68.4786
Mag Total Intensity Obs nT: 35702
Alt Barometric Ft: -100
Min/Max Data Record:
Longitude: 179.9999
Latitude: 21.3027
Mag Total Intensity Calc nT: 58510
Time Gmt Sec: 81257.5967
Mag East Component Obs nT: 33870
Mag North Component Obs nT: 8485
Mag Horizontal Intensity Calc nT: 34548
Mag Vertical Intensity Obs nT: 23119
Mag Declination Calc Deg: 22.3954
Mag Inclination Calc Deg: 39.8007
Mag Total Intensity Obs nT: 58458
Alt Barometric Ft: 31100