Survey Identifier: NAV4128
Format Acronym: ARO88
Data Center File Number: 0550-039
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 C320951: Flight 4128 ~ 3,369 Nautical Miles
Survey Departure Date (yyyymmdd): 19881109
Survey Arrival Date (yyyymmdd): 19881109
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: 19120
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -43
Bottommost Latitude: -58
Leftmost Longitude: +172
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: 19120
Datafile Header Info: PJCT=C32-951 FLGT= 4128 ,MTH= 11,DAY= 09, YR=1988,JDY= 314 -TO- 314,RCD= 19122,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -179.9990
Latitude: -57.9947
Mag Total Intensity Calc nT: 56082
Time Gmt Sec: 29571.1648
Mag East Component Obs nT: 11625
Mag North Component Obs nT: 7866
Mag Horizontal Intensity Calc nT: 14998
Mag Vertical Intensity Obs nT: -60090
Mag Declination Calc Deg: 21.8918
Mag Inclination Calc Deg: -75.9832
Mag Total Intensity Obs nT: 56077
Alt Barometric Ft: 400
Min/Max Data Record:
Longitude: 179.9998
Latitude: -43.5452
Mag Total Intensity Calc nT: 61936
Time Gmt Sec: 69909.3047
Mag East Component Obs nT: 19697
Mag North Component Obs nT: 11010
Mag Horizontal Intensity Calc nT: 21282
Mag Vertical Intensity Obs nT: -52566
Mag Declination Calc Deg: 39.3733
Mag Inclination Calc Deg: -68.6621
Mag Total Intensity Obs nT: 61938
Alt Barometric Ft: 28100