Survey Identifier: NAV1080


Format Acronym: ARO88
Data Center File Number: 0480-027
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 C32-253: Flight 1080 ~ 3,390 Nautical Miles
Survey Departure Date (yyyymmdd): 19820529
Survey Arrival Date (yyyymmdd): 19820530
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: 17425
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +24
Bottommost Latitude: -01
Leftmost Longitude: -065
Rightmost Longitude: -018
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: 17425
Datafile Header Info: PJCT=C32-253 FLGT= 1080 ,MTH= 5,DAY= 29, YR=1982,JDY= 149 -TO- 149,RCD= 17504,NAV=ESG ,CMP=INS1

Min/Max Data Record:
Longitude: -64.4822
Latitude: -0.0361
Mag Total Intensity Calc nT: 25438
Time Gmt Sec: 1.4521
Mag East Component Obs nT: 20347
Mag North Component Obs nT: -15240
Mag Horizontal Intensity Calc nT: 25421
Mag Vertical Intensity Obs nT: -2836
Mag Declination Calc Deg: -36.8342
Mag Inclination Calc Deg: -5.8562
Mag Total Intensity Obs nT: 35684
Alt Barometric Ft: 15001

Min/Max Data Record:
Longitude: -18.1677
Latitude: 23.9823
Mag Total Intensity Calc nT: 42188
Time Gmt Sec: 86399.4541
Mag East Component Obs nT: 30962
Mag North Component Obs nT: -5401
Mag Horizontal Intensity Calc nT: 31667
Mag Vertical Intensity Obs nT: 32688
Mag Declination Calc Deg: -11.5033
Mag Inclination Calc Deg: 50.8193
Mag Total Intensity Obs nT: 42209
Alt Barometric Ft: 29000