Survey Identifier: NAV4127
Format Acronym: ARO88
Data Center File Number: 0550-038
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 4127 ~ 3,408 Nautical Miles
Survey Departure Date (yyyymmdd): 19881106
Survey Arrival Date (yyyymmdd): 19881106
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: 19593
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -09
Bottommost Latitude: -44
Leftmost Longitude: +172
Rightmost Longitude: -164
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: 19593
Datafile Header Info: PJCT=C32-951 FLGT= 4127 ,MTH= 11,DAY= 6, YR=1988,JDY= 311 -TO- 311,RCD= 19595,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -179.9992
Latitude: -43.8275
Mag Total Intensity Calc nT: 36147
Time Gmt Sec: 31085.7000
Mag East Component Obs nT: 19640
Mag North Component Obs nT: 6356
Mag Horizontal Intensity Calc nT: 21354
Mag Vertical Intensity Obs nT: -54147
Mag Declination Calc Deg: 10.8075
Mag Inclination Calc Deg: -68.4767
Mag Total Intensity Obs nT: 36116
Alt Barometric Ft: 200
Min/Max Data Record:
Longitude: 179.9979
Latitude: -9.9578
Mag Total Intensity Calc nT: 58206
Time Gmt Sec: 72356.9854
Mag East Component Obs nT: 33949
Mag North Component Obs nT: 9503
Mag Horizontal Intensity Calc nT: 34660
Mag Vertical Intensity Obs nT: -12260
Mag Declination Calc Deg: 24.0715
Mag Inclination Calc Deg: -19.8068
Mag Total Intensity Obs nT: 58517
Alt Barometric Ft: 29000