Survey Identifier: NAV3144


Format Acronym: ARO88
Data Center File Number: 0480-251
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 C32-754, Flight 3144 ~ 3,455 Nautical Miles
Survey Departure Date (yyyymmdd): 19870731
Survey Arrival Date (yyyymmdd): 19870731
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: 17482
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +22
Bottommost Latitude: -07
Leftmost Longitude: +151
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: 17482
Datafile Header Info: PJCT=C32-754 FLGT= 3144 ,MTH= 7,DAY= 31, YR=1987,JDY= 212 -TO- 212,RCD= 17485,NAV=ESG ,CMP=ESG

Min/Max Data Record:
Longitude: -179.9991
Latitude: -6.6562
Mag Total Intensity Calc nT: 32961
Time Gmt Sec: 42662.9707
Mag East Component Obs nT: 27070
Mag North Component Obs nT: 4565
Mag Horizontal Intensity Calc nT: 27536
Mag Vertical Intensity Obs nT: -19150
Mag Declination Calc Deg: 7.2724
Mag Inclination Calc Deg: -27.9943
Mag Total Intensity Obs nT: 13002
Alt Barometric Ft: -100

Min/Max Data Record:
Longitude: 179.9983
Latitude: 21.3011
Mag Total Intensity Calc nT: 40822
Time Gmt Sec: 78659.8926
Mag East Component Obs nT: 35847
Mag North Component Obs nT: 5953
Mag Horizontal Intensity Calc nT: 36154
Mag Vertical Intensity Obs nT: 23050
Mag Declination Calc Deg: 11.6761
Mag Inclination Calc Deg: 39.7410
Mag Total Intensity Obs nT: 40805
Alt Barometric Ft: 26400