Survey Identifier: NAV1140
Format Acronym: ARO88
Data Center File Number: 0440-018
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: Jesus M. Anglero
Project: Project Magnet: Project C32-454, Flight 1140 ~ 3,247 Nautical Miles
Survey Departure Date (yyyymmdd): 19850808
Survey Arrival Date (yyyymmdd): 19850809
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: 17401
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +64
Bottommost Latitude: +38
Leftmost Longitude: -076
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: 17402
Datafile Header Info: PJCT=C32-554 FLGT= 1140 ,MTH= 8,DAY= 8, YR=1985,JDY= 220 -TO- 220,RCD= 17404,NAV=ESG ,CMP=INS1
Min/Max Data Record:
Longitude: -75.4817
Latitude: 38.9751
Mag Total Intensity Calc nT: 50070
Time Gmt Sec: 2.3887
Mag East Component Obs nT: 11110
Mag North Component Obs nT: -7200
Mag Horizontal Intensity Calc nT: 12557
Mag Vertical Intensity Obs nT: 47816
Mag Declination Calc Deg: -32.3559
Mag Inclination Calc Deg: 68.2623
Mag Total Intensity Obs nT: 50093
Alt Barometric Ft: 500
Min/Max Data Record:
Longitude: 5.2186
Latitude: 63.9821
Mag Total Intensity Calc nT: 56810
Time Gmt Sec: 86399.3926
Mag East Component Obs nT: 19869
Mag North Component Obs nT: -991
Mag Horizontal Intensity Calc nT: 20242
Mag Vertical Intensity Obs nT: 54907
Mag Declination Calc Deg: -3.7879
Mag Inclination Calc Deg: 76.0572
Mag Total Intensity Obs nT: 56807
Alt Barometric Ft: 23900