Survey Identifier: NAV4121
Format Acronym: ARO88
Data Center File Number: 0550-032
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 4121 ~ 3,302 Nautical Miles
Survey Departure Date (yyyymmdd): 19881027
Survey Arrival Date (yyyymmdd): 19881027
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: 17126
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -27
Bottommost Latitude: -50
Leftmost Longitude: -129
Rightmost Longitude: -109
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: 17126
Datafile Header Info: PJCT=C32-951 FLGT= 4121 ,MTH= 10,DAY= 26, YR=1988,JDY= 300 -TO- 300,RCD= 17128,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -128.0195
Latitude: -49.1127
Mag Total Intensity Calc nT: 32846
Time Gmt Sec: 6890.5140
Mag East Component Obs nT: 20322
Mag North Component Obs nT: 6347
Mag Horizontal Intensity Calc nT: 23027
Mag Vertical Intensity Obs nT: -42585
Mag Declination Calc Deg: 13.4859
Mag Inclination Calc Deg: -61.5714
Mag Total Intensity Obs nT: 24567
Alt Barometric Ft: -100
Min/Max Data Record:
Longitude: -109.3511
Latitude: -27.0887
Mag Total Intensity Calc nT: 48425
Time Gmt Sec: 43151.7178
Mag East Component Obs nT: 26788
Mag North Component Obs nT: 11213
Mag Horizontal Intensity Calc nT: 27803
Mag Vertical Intensity Obs nT: -19294
Mag Declination Calc Deg: 28.6487
Mag Inclination Calc Deg: -35.6232
Mag Total Intensity Obs nT: 48505
Alt Barometric Ft: 31100