Survey Identifier: NAV4142


Format Acronym: ARO88
Data Center File Number: 0550-051
Parameters Surveyed Code: FXD
File Creation Date (yyyymmdd): 19940506
Source Institution: US Naval Oceanographic Office
Country: INTERNATIONAL
Platform Name: RP-3D ORION
Platform Type Code: 3
Platform Type: PLANE
Chief Scientists: Virgil R. Bettencourt
Project: Project Magnet: Project C32-051: Flight 4142 ~ 2,254 Nautical Miles
Survey Departure Date (yyyymmdd): 19891103
Survey Arrival Date (yyyymmdd): 19891103
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: 11980
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -02
Bottommost Latitude: -18
Leftmost Longitude: -150
Rightmost Longitude: -138
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: 11980
Datafile Header Info: PJCT=C32-051 FLGT= 4142 ,MTH= 11,DAY= 3, YR=1989,JDY= 304 -TO- 304,RCD= 11982,NAV=ESG ,CMP=ESG

Min/Max Data Record:
Longitude: -149.6390
Latitude: -17.5885
Mag Total Intensity Calc nT: 32013
Time Gmt Sec: 27083.3870
Mag East Component Obs nT: 30608
Mag North Component Obs nT: 5163
Mag Horizontal Intensity Calc nT: 31262
Mag Vertical Intensity Obs nT: -18901
Mag Declination Calc Deg: 9.2882
Mag Inclination Calc Deg: -30.9005
Mag Total Intensity Obs nT: 31958
Alt Barometric Ft: 300

Min/Max Data Record:
Longitude: -138.9787
Latitude: -2.7089
Mag Total Intensity Calc nT: 37183
Time Gmt Sec: 51539.9756
Mag East Component Obs nT: 31796
Mag North Component Obs nT: 7315
Mag Horizontal Intensity Calc nT: 32297
Mag Vertical Intensity Obs nT: -558
Mag Declination Calc Deg: 13.1277
Mag Inclination Calc Deg: -0.9996
Mag Total Intensity Obs nT: 37205
Alt Barometric Ft: 26000