Survey Identifier: NAV4111
Format Acronym: ARO88
Data Center File Number: 0480-259
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 C32-852, Flight 4111 ~ 3,951 Nautical Miles
Survey Departure Date (yyyymmdd): 19880212
Survey Arrival Date (yyyymmdd): 19880212
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: 20866
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +22
Bottommost Latitude: -18
Leftmost Longitude: -176
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: 20867
Datafile Header Info: PJCT=C32-852 FLGT= 4111 ,MTH= 2,DAY= 12, YR=1988,JDY= 43 -TO- 43,RCD= 20869,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -175.0267
Latitude: -17.5732
Mag Total Intensity Calc nT: 32773
Time Gmt Sec: 16805.3589
Mag East Component Obs nT: 27029
Mag North Component Obs nT: 5076
Mag Horizontal Intensity Calc nT: 27511
Mag Vertical Intensity Obs nT: -18918
Mag Declination Calc Deg: 9.6570
Mag Inclination Calc Deg: -30.5814
Mag Total Intensity Obs nT: 32769
Alt Barometric Ft: 100
Min/Max Data Record:
Longitude: -149.6102
Latitude: 21.2777
Mag Total Intensity Calc nT: 38734
Time Gmt Sec: 59218.7329
Mag East Component Obs nT: 34049
Mag North Component Obs nT: 7272
Mag Horizontal Intensity Calc nT: 34734
Mag Vertical Intensity Obs nT: 22901
Mag Declination Calc Deg: 12.9400
Mag Inclination Calc Deg: 39.5710
Mag Total Intensity Obs nT: 38742
Alt Barometric Ft: 29100