Survey Identifier: NAV4055


Format Acronym: ARO88
Data Center File Number: 0480-090
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 C32-452, Flight 4055 ~ 3,791 Nautical Miles
Survey Departure Date (yyyymmdd): 19840313
Survey Arrival Date (yyyymmdd): 19840313
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: 18760
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -17
Bottommost Latitude: -44
Leftmost Longitude: +161
Rightmost Longitude: -149
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: 18760
Datafile Header Info: PJCT=C32-452 FLGT= 4055 ,MTH= 3,DAY= 13, YR=1984,JDY= 73 -TO- 73,RCD= 18761,NAV=INS1,CMP=INS1

Min/Max Data Record:
Longitude: -179.9961
Latitude: -43.5329
Mag Total Intensity Calc nT: 37125
Time Gmt Sec: 21722.9080
Mag East Component Obs nT: 19444
Mag North Component Obs nT: 6438
Mag Horizontal Intensity Calc nT: 21064
Mag Vertical Intensity Obs nT: -54722
Mag Declination Calc Deg: 12.2729
Mag Inclination Calc Deg: -68.9465
Mag Total Intensity Obs nT: 23309
Alt Barometric Ft: 300

Min/Max Data Record:
Longitude: 179.9956
Latitude: -17.4905
Mag Total Intensity Calc nT: 58661
Time Gmt Sec: 59638.6289
Mag East Component Obs nT: 31644
Mag North Component Obs nT: 8543
Mag Horizontal Intensity Calc nT: 32432
Mag Vertical Intensity Obs nT: -18535
Mag Declination Calc Deg: 22.7586
Mag Inclination Calc Deg: -29.9167
Mag Total Intensity Obs nT: 58622
Alt Barometric Ft: 26900