Survey Identifier: NAV7012
Format Acronym: ARO88
Data Center File Number: 0550-080
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 7012 ~ 1,263 Nautical Miles
Survey Departure Date (yyyymmdd): 19890909
Survey Arrival Date (yyyymmdd): 19890909
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: 7161
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -53
Bottommost Latitude: -65
Leftmost Longitude: -071
Rightmost Longitude: -035
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: 7161
Datafile Header Info: PJCT=C32-954 FLGT= 7012 ,MTH= 9,DAY= 9, YR=1989,JDY= 252 -TO- 252,RCD= 7163,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -70.8755
Latitude: -64.4641
Mag Total Intensity Calc nT: 33320
Time Gmt Sec: 3063.9320
Mag East Component Obs nT: 19321
Mag North Component Obs nT: -193
Mag Horizontal Intensity Calc nT: 19322
Mag Vertical Intensity Obs nT: -30739
Mag Declination Calc Deg: -0.5733
Mag Inclination Calc Deg: -57.8478
Mag Total Intensity Obs nT: 33396
Alt Barometric Ft: 400
Min/Max Data Record:
Longitude: -35.3015
Latitude: -53.0001
Mag Total Intensity Calc nT: 36313
Time Gmt Sec: 19172.9800
Mag East Component Obs nT: 21249
Mag North Component Obs nT: 5795
Mag Horizontal Intensity Calc nT: 22018
Mag Vertical Intensity Obs nT: -25203
Mag Declination Calc Deg: 15.2933
Mag Inclination Calc Deg: -48.8632
Mag Total Intensity Obs nT: 36313
Alt Barometric Ft: 27500