Survey Identifier: NAV2013
Format Acronym: ARO88
Data Center File Number: 0480-015
Parameters Surveyed Code: FXD
File Creation Date (yyyymmdd): 19890906
Source Institution: US Naval Oceanographic Office
Country: INTERNATIONAL
Platform Name: RP-3D ORION
Platform Type Code: 3
Platform Type: PLANE
Chief Scientists: Fred M. Valentine
Project: Project Magnet: Project C32-252: Flight 2013 ~ 3,967 Nautical Miles
Survey Departure Date (yyyymmdd): 19820330
Survey Arrival Date (yyyymmdd): 19820331
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: 20908
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -20
Bottommost Latitude: -26
Leftmost Longitude: -044
Rightmost Longitude: -007
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: 20908
Datafile Header Info: PJCT=C32-252 FLGT= 2013 ,MTH= 3,DAY= 30, YR=1982,JDY= 89 -TO- 89,RCD= 20909,NAV=INS2,CMP=INS2
Min/Max Data Record:
Longitude: -43.3678
Latitude: -25.2148
Mag Total Intensity Calc nT: 23666
Time Gmt Sec: 0.2979
Mag East Component Obs nT: 13826
Mag North Component Obs nT: -8184
Mag Horizontal Intensity Calc nT: 15330
Mag Vertical Intensity Obs nT: -22895
Mag Declination Calc Deg: -26.4241
Mag Inclination Calc Deg: -56.1856
Mag Total Intensity Obs nT: 23700
Alt Barometric Ft: 1005
Min/Max Data Record:
Longitude: -7.9799
Latitude: -20.0241
Mag Total Intensity Calc nT: 28025
Time Gmt Sec: 86398.7998
Mag East Component Obs nT: 19685
Mag North Component Obs nT: -6469
Mag Horizontal Intensity Calc nT: 20936
Mag Vertical Intensity Obs nT: -11413
Mag Declination Calc Deg: -19.1098
Mag Inclination Calc Deg: -28.7495
Mag Total Intensity Obs nT: 27988
Alt Barometric Ft: 27800