Survey Identifier: NAV1221
Format Acronym: ARO88
Data Center File Number: 0560-005
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 D32-353: Flight 1221 ~ 3,750 Nautical Miles
Survey Departure Date (yyyymmdd): 19930528
Survey Arrival Date (yyyymmdd): 19930529
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: 21195
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +16
Bottommost Latitude: +03
Leftmost Longitude: -048
Rightmost Longitude: -017
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: 21195
Datafile Header Info: PJCT=D32-353 FLGT= 1221 ,MTH= 5,DAY= 28, YR=1993,JDY= 148 -TO- 149,RCD= 21197,NAV=GPS ,CMP=RLG
Min/Max Data Record:
Longitude: -47.3120
Latitude: 3.0700
Mag Total Intensity Calc nT: 28363
Time Gmt Sec: 0.2300
Mag East Component Obs nT: 26647
Mag North Component Obs nT: -9745
Mag Horizontal Intensity Calc nT: 28224
Mag Vertical Intensity Obs nT: -2888
Mag Declination Calc Deg: -19.5192
Mag Inclination Calc Deg: -5.8284
Mag Total Intensity Obs nT: 28355
Alt Barometric Ft: 10
Min/Max Data Record:
Longitude: -17.4680
Latitude: 15.9990
Mag Total Intensity Calc nT: 33516
Time Gmt Sec: 86398.2266
Mag East Component Obs nT: 31480
Mag North Component Obs nT: -5906
Mag Horizontal Intensity Calc nT: 32052
Mag Vertical Intensity Obs nT: 17008
Mag Declination Calc Deg: -10.6760
Mag Inclination Calc Deg: 30.4977
Mag Total Intensity Obs nT: 33510
Alt Barometric Ft: 27060