Survey Identifier: NAV4161
Format Acronym: ARO88
Data Center File Number: 0560-034
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 D32-352: Flight 4161 ~ 3,799 Nautical Miles
Survey Departure Date (yyyymmdd): 19930205
Survey Arrival Date (yyyymmdd): 19930205
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: 20388
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +01
Bottommost Latitude: -18
Leftmost Longitude: -172
Rightmost Longitude: -149
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: 20382
Datafile Header Info: PJCT=D32-352 FLGT= 4161 ,MTH= 2,DAY= 5, YR=1993,JDY= 36 -TO- 36,RCD= 20390,NAV=GPS ,CMP=RLG
Min/Max Data Record:
Longitude: -171.1264
Latitude: -17.7371
Mag Total Intensity Calc nT: 32655
Time Gmt Sec: 31984.0254
Mag East Component Obs nT: 30612
Mag North Component Obs nT: 4893
Mag Horizontal Intensity Calc nT: 31224
Mag Vertical Intensity Obs nT: -19466
Mag Declination Calc Deg: 8.6237
Mag Inclination Calc Deg: -31.4993
Mag Total Intensity Obs nT: 32650
Alt Barometric Ft: 1243
Min/Max Data Record:
Longitude: -149.4201
Latitude: 0.0427
Mag Total Intensity Calc nT: 37404
Time Gmt Sec: 73428.0859
Mag East Component Obs nT: 33548
Mag North Component Obs nT: 6980
Mag Horizontal Intensity Calc nT: 34032
Mag Vertical Intensity Obs nT: 1756
Mag Declination Calc Deg: 12.6416
Mag Inclination Calc Deg: 3.0800
Mag Total Intensity Obs nT: 37449
Alt Barometric Ft: 28431