Survey Number: NAV7009 
Format Acronymn: ARO8
NGDC File Number: 0380-022
Params: FXD  
Data Rec'd @NGDC (YYMMDD): 860326
Contributing Institution: US Naval Oceanographic Office
Country: INTERNATIONAL     
Platform Name: RP-3D ORION         
Code: 3
Platform Type: PLANE 
Chief Scientist(s): Jesus M. Anglero
Project: Project Magnet: Project C32-552, Flight 7009
                         ~ 3,928 Nautical Miles
Start Date (YYMMDD): 840302
Survey Departure Airport:            
End Date (YYMMDD): 840303
Survey Arrival Airport:  
Flight Line Spacings: Single Flight Line, 
                         Variable Directions 
Magnetometor(s) Used: Vector and Scalar Magnetometers
Aircraft Altitude: 25,000 FT AG        
Aircraft Velocity: 240 Knots     
Sampling Rates Per Second:   2
Sensor Tow Distance: STINGER
Reference Field:              
Total Observations:      20719
Magnetometor Sensitivity:      0.1 nT
Bounding Limits:
Top Latitude   : -52
Bottom Latitude: -66
Left Longitude : -072
Right Longitude: -019

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.
