Survey Identifier: NAV4131


Format Acronym: ARO88
Data Center File Number: 0550-042
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 C32-951: Flight 4131 ~ 3,580 Nautical Miles
Survey Departure Date (yyyymmdd): 19881123
Survey Arrival Date (yyyymmdd): 19881123
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: 19343
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -27
Bottommost Latitude: -36
Leftmost Longitude: +153
Rightmost Longitude: -177
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: 19343
Datafile Header Info: PJCT=C32-951 FLGT= 4131 ,MTH= 11,DAY= 23, YR=1988,JDY= 328 -TO- 328,RCD= 19345,NAV=ESG ,CMP=ESG

Min/Max Data Record:
Longitude: -179.9993
Latitude: -35.0996
Mag Total Intensity Calc nT: 49661
Time Gmt Sec: 36654.6299
Mag East Component Obs nT: 23621
Mag North Component Obs nT: 5361
Mag Horizontal Intensity Calc nT: 24515
Mag Vertical Intensity Obs nT: -51143
Mag Declination Calc Deg: 10.8340
Mag Inclination Calc Deg: -64.3367
Mag Total Intensity Obs nT: 49665
Alt Barometric Ft: 100

Min/Max Data Record:
Longitude: 179.9976
Latitude: -27.3088
Mag Total Intensity Calc nT: 56886
Time Gmt Sec: 76609.8467
Mag East Component Obs nT: 28271
Mag North Component Obs nT: 8503
Mag Horizontal Intensity Calc nT: 28827
Mag Vertical Intensity Obs nT: -40957
Mag Declination Calc Deg: 17.8451
Mag Inclination Calc Deg: -55.4993
Mag Total Intensity Obs nT: 56901
Alt Barometric Ft: 27300