Survey Identifier: NAV4135
Format Acronym: ARO88
Data Center File Number: 0550-045
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: Virgil R. Bettencourt
Project: Project Magnet: Project C32-951, Flight 4135 ~ 4,019 Nautical Miles
Survey Departure Date (yyyymmdd): 19881210
Survey Arrival Date (yyyymmdd): 19881210
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: 20654
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +28
Bottommost Latitude: -17
Leftmost Longitude: -149
Rightmost Longitude: -097
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: 20654
Datafile Header Info: PJCT=C32-951 FLGT= 4135 ,MTH= 12,DAY= 10, YR=1988,JDY= 345 -TO- 345,RCD= 20656,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -148.8844
Latitude: -16.6420
Mag Total Intensity Calc nT: 31777
Time Gmt Sec: 22988.8909
Mag East Component Obs nT: 26024
Mag North Component Obs nT: 2817
Mag Horizontal Intensity Calc nT: 26190
Mag Vertical Intensity Obs nT: -17389
Mag Declination Calc Deg: 6.1196
Mag Inclination Calc Deg: -28.6777
Mag Total Intensity Obs nT: 31767
Alt Barometric Ft: 0
Min/Max Data Record:
Longitude: -97.1578
Latitude: 27.6459
Mag Total Intensity Calc nT: 48448
Time Gmt Sec: 65872.6387
Mag East Component Obs nT: 31712
Mag North Component Obs nT: 6659
Mag Horizontal Intensity Calc nT: 32238
Mag Vertical Intensity Obs nT: 40719
Mag Declination Calc Deg: 12.0484
Mag Inclination Calc Deg: 57.2327
Mag Total Intensity Obs nT: 48323
Alt Barometric Ft: 27100