Survey Identifier: NAV4042
Format Acronym: ARO88
Data Center File Number: 0480-042
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 C32-351: Flight 4042 ~ 3,736 Nautical Miles
Survey Departure Date (yyyymmdd): 19821211
Survey Arrival Date (yyyymmdd): 19821211
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: 20251
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -08
Bottommost Latitude: -41
Leftmost Longitude: -091
Rightmost Longitude: -070
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: 20253
Datafile Header Info: PJCT=C32-351 FLGT= 4042 ,MTH= 12,DAY= 11, YR=1982,JDY= 345 -TO- 345,RCD= 20254,NAV=INS1,CMP=INS2
Min/Max Data Record:
Longitude: -90.0028
Latitude: -40.1146
Mag Total Intensity Calc nT: 25715
Time Gmt Sec: 3564.2330
Mag East Component Obs nT: 21585
Mag North Component Obs nT: 1341
Mag Horizontal Intensity Calc nT: 21759
Mag Vertical Intensity Obs nT: -23146
Mag Declination Calc Deg: 2.8364
Mag Inclination Calc Deg: -44.2508
Mag Total Intensity Obs nT: 25706
Alt Barometric Ft: 641
Min/Max Data Record:
Longitude: -70.7838
Latitude: -8.0302
Mag Total Intensity Calc nT: 33170
Time Gmt Sec: 44678.7329
Mag East Component Obs nT: 28936
Mag North Component Obs nT: 8256
Mag Horizontal Intensity Calc nT: 29219
Mag Vertical Intensity Obs nT: 2127
Mag Declination Calc Deg: 20.3313
Mag Inclination Calc Deg: 4.1868
Mag Total Intensity Obs nT: 32310
Alt Barometric Ft: 26900