Survey Identifier: NAV4145


Format Acronym: ARO88
Data Center File Number: 0550-054
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 C32-052: Flight 4145 ~ 1,319 Nautical Miles
Survey Departure Date (yyyymmdd): 19900120
Survey Arrival Date (yyyymmdd): 19900120
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: 6858
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -25
Bottommost Latitude: -36
Leftmost Longitude: -110
Rightmost Longitude: -099
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: 6858
Datafile Header Info: PJCT=C32-052 FLGT= 4145 ,MTH= 1,DAY= 20, YR=1990,JDY= 20 -TO- 20,RCD= 6860,NAV=ESG ,CMP=ESG

Min/Max Data Record:
Longitude: -109.5862
Latitude: -35.0729
Mag Total Intensity Calc nT: 31001
Time Gmt Sec: 30736.7058
Mag East Component Obs nT: 23500
Mag North Component Obs nT: 6483
Mag Horizontal Intensity Calc nT: 24879
Mag Vertical Intensity Obs nT: -22952
Mag Declination Calc Deg: 13.6428
Mag Inclination Calc Deg: -42.6931
Mag Total Intensity Obs nT: 30965
Alt Barometric Ft: 25900

Min/Max Data Record:
Longitude: -99.9937
Latitude: -25.9893
Mag Total Intensity Calc nT: 35087
Time Gmt Sec: 44673.7148
Mag East Component Obs nT: 26805
Mag North Component Obs nT: 8210
Mag Horizontal Intensity Calc nT: 27642
Mag Vertical Intensity Obs nT: -16334
Mag Declination Calc Deg: 19.2224
Mag Inclination Calc Deg: -31.7911
Mag Total Intensity Obs nT: 33932
Alt Barometric Ft: 31300