Survey Identifier: NAV4112
Format Acronym: ARO88
Data Center File Number: 0480-318
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 C32-853, Flight 4112 ~ 4,239 Nautical Miles
Survey Departure Date (yyyymmdd): 19880605
Survey Arrival Date (yyyymmdd): 19880605
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: 21019
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -34
Bottommost Latitude: -66
Leftmost Longitude: +138
Rightmost Longitude: +173
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: 21020
Datafile Header Info: PJCT=C32-853 FLGT= 4112 ,MTH= 6,DAY= 5, YR=1988,JDY= 157 -TO- 157
Min/Max Data Record:
Longitude: 138.6916
Latitude: -65.0492
Mag Total Intensity Calc nT: 58452
Time Gmt Sec: 38361.7627
Mag East Component Obs nT: 42
Mag North Component Obs nT: 7
Mag Horizontal Intensity Calc nT: 88
Mag Vertical Intensity Obs nT: -67058
Mag Declination Calc Deg: 1.0649
Mag Inclination Calc Deg: -89.9247
Mag Total Intensity Obs nT: 58462
Alt Barometric Ft: 2000
Min/Max Data Record:
Longitude: 172.4968
Latitude: -34.7630
Mag Total Intensity Calc nT: 67153
Time Gmt Sec: 81198.1719
Mag East Component Obs nT: 22942
Mag North Component Obs nT: 8435
Mag Horizontal Intensity Calc nT: 23174
Mag Vertical Intensity Obs nT: -54485
Mag Declination Calc Deg: 80.9687
Mag Inclination Calc Deg: -67.1399
Mag Total Intensity Obs nT: 67157
Alt Barometric Ft: 32900