Survey Identifier: NAV2023A


Format Acronym: ARO88
Data Center File Number: 0480-149
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 C32-552, Flight 2023A ~ 3,058 Nautical Miles
Survey Departure Date (yyyymmdd): 19850226
Survey Arrival Date (yyyymmdd): 19850227
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: 17683
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -34
Bottommost Latitude: -48
Leftmost Longitude: -057
Rightmost Longitude: -032
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: 17683
Datafile Header Info: PJCT=C32-552 FLGT= 2023A ,MTH= 2,DAY= 26, YR=1985,JDY= 57 -TO- 57,RCD= 17684,NAV=ESG ,CMP=ESG

Min/Max Data Record:
Longitude: -56.0822
Latitude: -47.9915
Mag Total Intensity Calc nT: 24022
Time Gmt Sec: 0.3066
Mag East Component Obs nT: 15527
Mag North Component Obs nT: -4378
Mag Horizontal Intensity Calc nT: 16082
Mag Vertical Intensity Obs nT: -21726
Mag Declination Calc Deg: -15.7398
Mag Inclination Calc Deg: -53.4400
Mag Total Intensity Obs nT: 24059
Alt Barometric Ft: 400

Min/Max Data Record:
Longitude: -32.2892
Latitude: -34.8356
Mag Total Intensity Calc nT: 27720
Time Gmt Sec: 86398.3076
Mag East Component Obs nT: 19639
Mag North Component Obs nT: 232
Mag Horizontal Intensity Calc nT: 19687
Mag Vertical Intensity Obs nT: -13849
Mag Declination Calc Deg: 0.6772
Mag Inclination Calc Deg: -35.1534
Mag Total Intensity Obs nT: 27729
Alt Barometric Ft: 27900