Survey Identifier: NAV4166
Format Acronym: ARO88
Data Center File Number: 0560-039
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: Donald R. Wilson
Project: Project Magnet: Project D32-451: Flight 4166 ~ 3,255 Nautical Miles
Survey Departure Date (yyyymmdd): 19931015
Survey Arrival Date (yyyymmdd): 19931015
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: 19421
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -17
Bottommost Latitude: -28
Leftmost Longitude: -157
Rightmost Longitude: -109
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: 19421
Datafile Header Info: PJCT=D32-451 FLGT= 4166 ,MTH= 10,DAY= 15, YR=1993,JDY= 288 -TO- 288,RCD= 19423,NAV=GPS ,CMP=RLG
Min/Max Data Record:
Longitude: -156.0643
Latitude: -27.2618
Mag Total Intensity Calc nT: 32757
Time Gmt Sec: 34196.7695
Mag East Component Obs nT: 24846
Mag North Component Obs nT: 6718
Mag Horizontal Intensity Calc nT: 25886
Mag Vertical Intensity Obs nT: -30556
Mag Declination Calc Deg: -999.0000
Mag Inclination Calc Deg: -999.0000
Mag Total Intensity Obs nT: 32776
Alt Barometric Ft: 1319
Min/Max Data Record:
Longitude: -109.3701
Latitude: -17.6063
Mag Total Intensity Calc nT: 42449
Time Gmt Sec: 73689.3516
Mag East Component Obs nT: 31319
Mag North Component Obs nT: 8028
Mag Horizontal Intensity Calc nT: 32105
Mag Vertical Intensity Obs nT: -18786
Mag Declination Calc Deg: 16.4058
Mag Inclination Calc Deg: -30.4527
Mag Total Intensity Obs nT: 42467
Alt Barometric Ft: 26817