Survey Identifier: NAV1227


Format Acronym: ARO88
Data Center File Number: 0560-011
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 1227 ~ 3,860 Nautical Miles
Survey Departure Date (yyyymmdd): 19931208
Survey Arrival Date (yyyymmdd): 19931209
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: 22286
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +35
Bottommost Latitude: +27
Leftmost Longitude: -090
Rightmost Longitude: -015
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: 22286
Datafile Header Info: PJCT=D32-451 FLGT= 1227 ,MTH= 12,DAY= 8, YR=1993,JDY= 342 -TO- 343,RCD= 22288,NAV=GPS ,CMP=RLG

Min/Max Data Record:
Longitude: -89.1843
Latitude: 27.8819
Mag Total Intensity Calc nT: 39554
Time Gmt Sec: 0.0350
Mag East Component Obs nT: 22630
Mag North Component Obs nT: -8091
Mag Horizontal Intensity Calc nT: 23077
Mag Vertical Intensity Obs nT: 27228
Mag Declination Calc Deg: -999.0000
Mag Inclination Calc Deg: -999.0000
Mag Total Intensity Obs nT: 37891
Alt Barometric Ft: 902

Min/Max Data Record:
Longitude: -15.2712
Latitude: 34.8656
Mag Total Intensity Calc nT: 50682
Time Gmt Sec: 86398.0313
Mag East Component Obs nT: 28162
Mag North Component Obs nT: 511
Mag Horizontal Intensity Calc nT: 28691
Mag Vertical Intensity Obs nT: 45053
Mag Declination Calc Deg: 1.2067
Mag Inclination Calc Deg: 62.7553
Mag Total Intensity Obs nT: 50678
Alt Barometric Ft: 31004