Survey Identifier: NAV1137


Format Acronym: ARO88
Data Center File Number: 0440-016
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: Jesus M. Anglero
Project: Project Magnet: Project C32-454, Flight 1137 ~ 3,421 Nautical Miles
Survey Departure Date (yyyymmdd): 19850729
Survey Arrival Date (yyyymmdd): 19850730
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: 18666
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +62
Bottommost Latitude: +44
Leftmost Longitude: -029
Rightmost Longitude: +013
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. 10 - 20 nT noise level in vector components.
Number of Data Records: 18666
Datafile Header Info: PJCT=C32-554 FLGT= 1137 ,MTH= 7,DAY= 29, YR=1985,JDY= 210 -TO- 210,RCD= 18668,NAV=INS1,CMP=INS1

Min/Max Data Record:
Longitude: -28.9408
Latitude: 44.9676
Mag Total Intensity Calc nT: 45699
Time Gmt Sec: 1.5723
Mag East Component Obs nT: 13169
Mag North Component Obs nT: -6172
Mag Horizontal Intensity Calc nT: 14079
Mag Vertical Intensity Obs nT: 39842
Mag Declination Calc Deg: -21.7968
Mag Inclination Calc Deg: 60.6458
Mag Total Intensity Obs nT: 45696
Alt Barometric Ft: 6700

Min/Max Data Record:
Longitude: 12.0545
Latitude: 61.3441
Mag Total Intensity Calc nT: 51588
Time Gmt Sec: 86398.0732
Mag East Component Obs nT: 22285
Mag North Component Obs nT: -61
Mag Horizontal Intensity Calc nT: 22433
Mag Vertical Intensity Obs nT: 49597
Mag Declination Calc Deg: -0.2044
Mag Inclination Calc Deg: 74.0906
Mag Total Intensity Obs nT: 51580
Alt Barometric Ft: 26900