Survey Identifier: NAV2057
Format Acronym: ARO88
Data Center File Number: 0550-020
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 C32-954: Flight 2057 ~ 2,570 Nautical Miles
Survey Departure Date (yyyymmdd): 19890920
Survey Arrival Date (yyyymmdd): 19890921
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: 13486
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +06
Bottommost Latitude: -09
Leftmost Longitude: -015
Rightmost Longitude: +006
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: 13486
Datafile Header Info: PJCT=C32-954 FLGT= 2057 ,MTH= 9,DAY= 20, YR=1989,JDY= 263 -TO- 263,RCD= 13488,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -14.3881
Latitude: -8.0990
Mag Total Intensity Calc nT: 27582
Time Gmt Sec: 1.0557
Mag East Component Obs nT: 20776
Mag North Component Obs nT: -7382
Mag Horizontal Intensity Calc nT: 21920
Mag Vertical Intensity Obs nT: -21586
Mag Declination Calc Deg: -18.8868
Mag Inclination Calc Deg: -43.7870
Mag Total Intensity Obs nT: 27691
Alt Barometric Ft: 100
Min/Max Data Record:
Longitude: 5.1491
Latitude: 5.2497
Mag Total Intensity Calc nT: 31940
Time Gmt Sec: 86399.0557
Mag East Component Obs nT: 29999
Mag North Component Obs nT: -2986
Mag Horizontal Intensity Calc nT: 30297
Mag Vertical Intensity Obs nT: -7697
Mag Declination Calc Deg: -5.7491
Mag Inclination Calc Deg: -14.2547
Mag Total Intensity Obs nT: 31951
Alt Barometric Ft: 26000