Survey Identifier: NAV3148


Format Acronym: ARO88
Data Center File Number: 0480-278
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 C32-851, Flight 3148 ~ 4,091 Nautical Miles
Survey Departure Date (yyyymmdd): 19871018
Survey Arrival Date (yyyymmdd): 19871018
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: 21493
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +59
Bottommost Latitude: +37
Leftmost Longitude: -164
Rightmost Longitude: -122
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: 21494
Datafile Header Info: PJCT=C32-851 FLGT= 3148 ,MTH= 10,DAY= 18, YR=1987,JDY= 291 -TO- 291,RCD= 21495,NAV=ESG ,CMP=ESG

Min/Max Data Record:
Longitude: -164.0040
Latitude: 37.4264
Mag Total Intensity Calc nT: 44925
Time Gmt Sec: 16197.6470
Mag East Component Obs nT: 13003
Mag North Component Obs nT: 5538
Mag Horizontal Intensity Calc nT: 14721
Mag Vertical Intensity Obs nT: 38350
Mag Declination Calc Deg: 13.8237
Mag Inclination Calc Deg: 34.9963
Mag Total Intensity Obs nT: 44910
Alt Barometric Ft: -300

Min/Max Data Record:
Longitude: -122.0539
Latitude: 58.3768
Mag Total Intensity Calc nT: 96301
Time Gmt Sec: 59182.0879
Mag East Component Obs nT: 23329
Mag North Component Obs nT: 77778
Mag Horizontal Intensity Calc nT: 78889
Mag Vertical Intensity Obs nT: 55336
Mag Declination Calc Deg: 80.3724
Mag Inclination Calc Deg: 75.0651
Mag Total Intensity Obs nT: 57465
Alt Barometric Ft: 33200