Survey Identifier: NAV4122
Format Acronym: ARO88
Data Center File Number: 0550-033
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 4122 ~ 3,175 Nautical Miles
Survey Departure Date (yyyymmdd): 19881010
Survey Arrival Date (yyyymmdd): 19881010
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: 16898
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -28
Bottommost Latitude: -61
Leftmost Longitude: -110
Rightmost Longitude: -072
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: 16898
Datafile Header Info: PJCT=C32-951 FLGT= 4122 ,MTH= 10,DAY= 10, YR=1988,JDY= 284 -TO- 284,RCD= 16900,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -109.0592
Latitude: -60.0300
Mag Total Intensity Calc nT: 33971
Time Gmt Sec: 16266.4839
Mag East Component Obs nT: 17740
Mag North Component Obs nT: 6186
Mag Horizontal Intensity Calc nT: 21883
Mag Vertical Intensity Obs nT: -43415
Mag Declination Calc Deg: 15.9010
Mag Inclination Calc Deg: -63.2069
Mag Total Intensity Obs nT: 33969
Alt Barometric Ft: 15200
Min/Max Data Record:
Longitude: -72.1558
Latitude: -28.6044
Mag Total Intensity Calc nT: 48673
Time Gmt Sec: 51048.0586
Mag East Component Obs nT: 25678
Mag North Component Obs nT: 12993
Mag Horizontal Intensity Calc nT: 26716
Mag Vertical Intensity Obs nT: -20999
Mag Declination Calc Deg: 35.9413
Mag Inclination Calc Deg: -38.1677
Mag Total Intensity Obs nT: 48811
Alt Barometric Ft: 27500