Survey Identifier: NAV3146
Format Acronym: ARO88
Data Center File Number: 0480-254
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 C32-754, Flight 3146 ~ 3,422 Nautical Miles
Survey Departure Date (yyyymmdd): 19870903
Survey Arrival Date (yyyymmdd): 19870903
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: 17929
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +22
Bottommost Latitude: +13
Leftmost Longitude: +144
Rightmost Longitude: -158
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: 17929
Datafile Header Info: PJCT=C32-754 FLGT= 3146 ,MTH= 9,DAY= 11, YR=1987,JDY= 254 -TO- 254,RCD= 17931,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -179.9967
Latitude: 13.4494
Mag Total Intensity Calc nT: 33749
Time Gmt Sec: 31651.9438
Mag East Component Obs nT: 26979
Mag North Component Obs nT: 976
Mag Horizontal Intensity Calc nT: 27462
Mag Vertical Intensity Obs nT: 6912
Mag Declination Calc Deg: 1.5637
Mag Inclination Calc Deg: 10.9621
Mag Total Intensity Obs nT: 33752
Alt Barometric Ft: 100
Min/Max Data Record:
Longitude: 179.9999
Latitude: 21.4404
Mag Total Intensity Calc nT: 36489
Time Gmt Sec: 68442.5117
Mag East Component Obs nT: 35751
Mag North Component Obs nT: 5826
Mag Horizontal Intensity Calc nT: 35768
Mag Vertical Intensity Obs nT: 22982
Mag Declination Calc Deg: 12.0244
Mag Inclination Calc Deg: 39.7014
Mag Total Intensity Obs nT: 36508
Alt Barometric Ft: 23100