Survey Identifier: NAV1139


Format Acronym: ARO88
Data Center File Number: 0480-193
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 C32-554, Flight 1139 ~ 3,824 Nautical Miles
Survey Departure Date (yyyymmdd): 19850805
Survey Arrival Date (yyyymmdd): 19850806
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: 21073
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +78
Bottommost Latitude: +51
Leftmost Longitude: -016
Rightmost Longitude: +023
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: 21075
Datafile Header Info: PJCT=C32-554 FLGT= 1139 ,MTH= 8,DAY= 5, YR=1985,JDY= 217 -TO- 217,RCD= 21076,NAV=INS2,CMP=INS2

Min/Max Data Record:
Longitude: -15.0040
Latitude: 51.7960
Mag Total Intensity Calc nT: 47971
Time Gmt Sec: 0.6729
Mag East Component Obs nT: 8137
Mag North Component Obs nT: -4068
Mag Horizontal Intensity Calc nT: 8221
Mag Vertical Intensity Obs nT: 44077
Mag Declination Calc Deg: -16.8429
Mag Inclination Calc Deg: 66.7522
Mag Total Intensity Obs nT: 48005
Alt Barometric Ft: 2100

Min/Max Data Record:
Longitude: 22.2288
Latitude: 77.0291
Mag Total Intensity Calc nT: 53936
Time Gmt Sec: 86398.6729
Mag East Component Obs nT: 18838
Mag North Component Obs nT: 779
Mag Horizontal Intensity Calc nT: 18935
Mag Vertical Intensity Obs nT: 53258
Mag Declination Calc Deg: 5.2445
Mag Inclination Calc Deg: 81.1926
Mag Total Intensity Obs nT: 53963
Alt Barometric Ft: 27000