Survey Identifier: NAV3117
Format Acronym: ARO88
Data Center File Number: 0480-176
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 C32-553, Flight 3117 ~ 3,967 Nautical Miles
Survey Departure Date (yyyymmdd): 19850606
Survey Arrival Date (yyyymmdd): 19850606
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: 20431
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +41
Bottommost Latitude: +35
Leftmost Longitude: +139
Rightmost Longitude: +179
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: 20431
Datafile Header Info: PJCT=C32-553 FLGT= 3117 ,MTH= 6,DAY= 6, YR=1985,JDY= 157 -TO- 157,RCD= 20433,NAV=ESG ,CMP=INS1
Min/Max Data Record:
Longitude: 139.3167
Latitude: 35.4811
Mag Total Intensity Calc nT: 39313
Time Gmt Sec: 39456.3799
Mag East Component Obs nT: 25002
Mag North Component Obs nT: -3731
Mag Horizontal Intensity Calc nT: 25189
Mag Vertical Intensity Obs nT: 29504
Mag Declination Calc Deg: -7.0605
Mag Inclination Calc Deg: 47.4457
Mag Total Intensity Obs nT: 0
Alt Barometric Ft: 300
Min/Max Data Record:
Longitude: 178.5405
Latitude: 40.1862
Mag Total Intensity Calc nT: 46251
Time Gmt Sec: 81386.3467
Mag East Component Obs nT: 30428
Mag North Component Obs nT: 3461
Mag Horizontal Intensity Calc nT: 30634
Mag Vertical Intensity Obs nT: 36278
Mag Declination Calc Deg: 7.6265
Mag Inclination Calc Deg: 52.0937
Mag Total Intensity Obs nT: 46236
Alt Barometric Ft: 29000