Survey Identifier: NAV4154
Format Acronym: ARO88
Data Center File Number: 0550-056
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 C32-053: Flight 4154 ~ 3,530 Nautical Miles
Survey Departure Date (yyyymmdd): 19900604
Survey Arrival Date (yyyymmdd): 19900604
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: 18167
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +17
Bottommost Latitude: -34
Leftmost Longitude: -100
Rightmost Longitude: -070
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: 18167
Datafile Header Info: PJCT=C32-053 FLGT= 4154 ,MTH= 6,DAY= 4, YR=1990,JDY= 155 -TO- 155,RCD= 18169,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -99.7460
Latitude: -33.3961
Mag Total Intensity Calc nT: 25137
Time Gmt Sec: 7512.7920
Mag East Component Obs nT: 21278
Mag North Component Obs nT: 1784
Mag Horizontal Intensity Calc nT: 21405
Mag Vertical Intensity Obs nT: -14057
Mag Declination Calc Deg: 4.7531
Mag Inclination Calc Deg: -33.1104
Mag Total Intensity Obs nT: 25126
Alt Barometric Ft: 0
Min/Max Data Record:
Longitude: -70.7792
Latitude: 16.7523
Mag Total Intensity Calc nT: 40939
Time Gmt Sec: 44452.9087
Mag East Component Obs nT: 30098
Mag North Component Obs nT: 4004
Mag Horizontal Intensity Calc nT: 30330
Mag Vertical Intensity Obs nT: 28169
Mag Declination Calc Deg: 7.7761
Mag Inclination Calc Deg: 43.4847
Mag Total Intensity Obs nT: 40837
Alt Barometric Ft: 25100