Survey Identifier: NAV1181B


Format Acronym: ARO88
Data Center File Number: 0480-324
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 C32-953, Flight 1181B ~ 1,772 Nautical Miles
Survey Departure Date (yyyymmdd): 19890511
Survey Arrival Date (yyyymmdd): 19890512
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: 9835
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +42
Bottommost Latitude: +37
Leftmost Longitude: -113
Rightmost Longitude: -076
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: 9837
Datafile Header Info: PJCT=C32-953 FLGT= 1181B ,MTH= 5,DAY= 11, YR=1989,JDY= 131 -TO- 131

Min/Max Data Record:
Longitude: -112.2396
Latitude: 37.3251
Mag Total Intensity Calc nT: 53505
Time Gmt Sec: 0.7305
Mag East Component Obs nT: 19894
Mag North Component Obs nT: -3754
Mag Horizontal Intensity Calc nT: 19976
Mag Vertical Intensity Obs nT: 49265
Mag Declination Calc Deg: -10.4320
Mag Inclination Calc Deg: 65.9568
Mag Total Intensity Obs nT: 53526
Alt Barometric Ft: 4900

Min/Max Data Record:
Longitude: -76.5958
Latitude: 41.2631
Mag Total Intensity Calc nT: 55633
Time Gmt Sec: 86398.7305
Mag East Component Obs nT: 21333
Mag North Component Obs nT: 5534
Mag Horizontal Intensity Calc nT: 21984
Mag Vertical Intensity Obs nT: 51756
Mag Declination Calc Deg: 14.9884
Mag Inclination Calc Deg: 68.7330
Mag Total Intensity Obs nT: 55629
Alt Barometric Ft: 26100