Survey Identifier: NAV4120
Format Acronym: ARO88
Data Center File Number: 0550-031
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 4120 ~ 3,345 Nautical Miles
Survey Departure Date (yyyymmdd): 19881023
Survey Arrival Date (yyyymmdd): 19881023
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: 17411
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -24
Bottommost Latitude: -35
Leftmost Longitude: -110
Rightmost Longitude: -084
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: 17411
Datafile Header Info: PJCT=C32-951 FLGT= 4120 ,MTH= 10,DAY= 23, YR=1988,JDY= 297 -TO- 297,RCD= 17413 NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -109.5585
Latitude: -34.9945
Mag Total Intensity Calc nT: 27440
Time Gmt Sec: 7394.6920
Mag East Component Obs nT: 22478
Mag North Component Obs nT: 4765
Mag Horizontal Intensity Calc nT: 23329
Mag Vertical Intensity Obs nT: -21993
Mag Declination Calc Deg: 10.9900
Mag Inclination Calc Deg: -39.1815
Mag Total Intensity Obs nT: 27437
Alt Barometric Ft: 0
Min/Max Data Record:
Longitude: -84.8887
Latitude: -24.9887
Mag Total Intensity Calc nT: 35209
Time Gmt Sec: 42847.4106
Mag East Component Obs nT: 26855
Mag North Component Obs nT: 8229
Mag Horizontal Intensity Calc nT: 27847
Mag Vertical Intensity Obs nT: -11428
Mag Declination Calc Deg: 17.5441
Mag Inclination Calc Deg: -24.5500
Mag Total Intensity Obs nT: 33593
Alt Barometric Ft: 27000