Survey Identifier: NAV4081
Format Acronym: ARO88
Data Center File Number: 0480-207
Parameters Surveyed Code: FXD
File Creation Date (yyyymmdd): 19890906
Source Institution: US Naval Oceanographic Office
Country: INTERNATIONAL
Platform Name: RP-3D ORION
Platform Type Code: 3
Platform Type: PLANE
Chief Scientists: Fred M. Valentine
Project: Project Magnet: Project C32-651, Flight 4081 ~ 3,595 Nautical Miles
Survey Departure Date (yyyymmdd): 19851206
Survey Arrival Date (yyyymmdd): 19851206
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: 17737
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -17
Bottommost Latitude: -47
Leftmost Longitude: +175
Rightmost Longitude: -144
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: 17739
Datafile Header Info: PJCT=C32-651 FLGT= 4081 ,MTH= 12,DAY= 6, YR=1985,JDY= 340 -TO- 340,RCD= 17740,NAV=INS2,CMP=INS2
Min/Max Data Record:
Longitude: -179.9959
Latitude: -46.3383
Mag Total Intensity Calc nT: 37139
Time Gmt Sec: 43260.2026
Mag East Component Obs nT: 19136
Mag North Component Obs nT: 7111
Mag Horizontal Intensity Calc nT: 21117
Mag Vertical Intensity Obs nT: -54093
Mag Declination Calc Deg: 12.9027
Mag Inclination Calc Deg: -68.6747
Mag Total Intensity Obs nT: 37173
Alt Barometric Ft: 3700
Min/Max Data Record:
Longitude: 179.9994
Latitude: -17.7775
Mag Total Intensity Calc nT: 58101
Time Gmt Sec: 79326.0469
Mag East Component Obs nT: 31366
Mag North Component Obs nT: 10000
Mag Horizontal Intensity Calc nT: 32219
Mag Vertical Intensity Obs nT: -18910
Mag Declination Calc Deg: 26.3545
Mag Inclination Calc Deg: -30.4141
Mag Total Intensity Obs nT: 58118
Alt Barometric Ft: 31200