Survey Identifier: NAV3180B
Format Acronym: ARO88
Data Center File Number: 0550-023
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 C32-953: Flight 3180B ~ 498 Nautical Miles
Survey Departure Date (yyyymmdd): 19890609
Survey Arrival Date (yyyymmdd): 19890609
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: 2597
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +23
Bottommost Latitude: +16
Leftmost Longitude: +113
Rightmost Longitude: +121
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: 2597
Datafile Header Info: PJCT=C32-953 FLGT= 3180B ,MTH= 6,DAY= 9, YR=1989,JDY= 160 -TO- 160,RCD= 2599,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: 113.7968
Latitude: 16.9507
Mag Total Intensity Calc nT: 41245
Time Gmt Sec: 27663.3979
Mag East Component Obs nT: 38039
Mag North Component Obs nT: -1219
Mag Horizontal Intensity Calc nT: 38056
Mag Vertical Intensity Obs nT: 14014
Mag Declination Calc Deg: -1.8248
Mag Inclination Calc Deg: 19.8635
Mag Total Intensity Obs nT: 41234
Alt Barometric Ft: 2700
Min/Max Data Record:
Longitude: 120.1547
Latitude: 22.3167
Mag Total Intensity Calc nT: 44320
Time Gmt Sec: 32998.3745
Mag East Component Obs nT: 38789
Mag North Component Obs nT: -931
Mag Horizontal Intensity Calc nT: 38800
Mag Vertical Intensity Obs nT: 22632
Mag Declination Calc Deg: -1.3745
Mag Inclination Calc Deg: 30.7093
Mag Total Intensity Obs nT: 44452
Alt Barometric Ft: 23900