Survey Identifier: NAV4053


Format Acronym: ARO88
Data Center File Number: 0480-078
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 C32-451: Flight 4053 ~3,750 Nautical Miles
Survey Departure Date (yyyymmdd): 19831212
Survey Arrival Date (yyyymmdd): 19831212
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: 21556
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -17
Bottommost Latitude: -44
Leftmost Longitude: +164
Rightmost Longitude: -150
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: 21558
Datafile Header Info: PJCT=C32-451 FLGT= 4053 ,MTH= 12,DAY= 12, YR=1983,JDY= 346 -TO- 346,RCD= 21559,NAV=ESG ,CMP=ESG

Min/Max Data Record:
Longitude: -179.9985
Latitude: -43.6245
Mag Total Intensity Calc nT: 37250
Time Gmt Sec: 32482.5999
Mag East Component Obs nT: 19513
Mag North Component Obs nT: 6650
Mag Horizontal Intensity Calc nT: 21124
Mag Vertical Intensity Obs nT: -54773
Mag Declination Calc Deg: 12.0791
Mag Inclination Calc Deg: -68.9088
Mag Total Intensity Obs nT: 37275
Alt Barometric Ft: 400

Min/Max Data Record:
Longitude: 179.9983
Latitude: -17.8669
Mag Total Intensity Calc nT: 58755
Time Gmt Sec: 76486.3848
Mag East Component Obs nT: 31260
Mag North Component Obs nT: 8266
Mag Horizontal Intensity Calc nT: 32039
Mag Vertical Intensity Obs nT: -19319
Mag Declination Calc Deg: 22.8031
Mag Inclination Calc Deg: -31.2359
Mag Total Intensity Obs nT: 58719
Alt Barometric Ft: 26900