Survey Identifier: NAV4168
Format Acronym: ARO88
Data Center File Number: 0560-041
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 4168 ~ 3,706 Nautical Miles
Survey Departure Date (yyyymmdd): 19931022
Survey Arrival Date (yyyymmdd): 19931022
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: 20372
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -43
Bottommost Latitude: -66
Leftmost Longitude: +137
Rightmost Longitude: +173
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: 20372
Datafile Header Info: PJCT=D32-451 FLGT= 4168 ,MTH= 10,DAY= 22, YR=1993,JDY= 295 -TO- 295,RCD= 20374,NAV=GPS ,CMP=RLG
Min/Max Data Record:
Longitude: 137.8462
Latitude: -65.5734
Mag Total Intensity Calc nT: 58165
Time Gmt Sec: 37407.8086
Mag East Component Obs nT: -422
Mag North Component Obs nT: -264
Mag Horizontal Intensity Calc nT: 104
Mag Vertical Intensity Obs nT: -66979
Mag Declination Calc Deg: -999.0000
Mag Inclination Calc Deg: -999.0000
Mag Total Intensity Obs nT: 58164
Alt Barometric Ft: 282
Min/Max Data Record:
Longitude: 172.7353
Latitude: -43.4165
Mag Total Intensity Calc nT: 67054
Time Gmt Sec: 79914.1094
Mag East Component Obs nT: 19705
Mag North Component Obs nT: 8499
Mag Horizontal Intensity Calc nT: 21388
Mag Vertical Intensity Obs nT: -54174
Mag Declination Calc Deg: 179.8056
Mag Inclination Calc Deg: -68.5199
Mag Total Intensity Obs nT: 67062
Alt Barometric Ft: 30069