Survey Number: NAV9467 
Format Acronymn: ARO8
NGDC File Number: 0630-003
Params:  XD  
Data Rec'd @NGDC (YYMMDD): 950209
Contributing Institution: US Naval Oceanographic Office           
Country: American Samoa    
Platform Name: RP-3D ORION         
Code: 3
Platform Type: PLANE 
Chief Scientist(s): Frederick Valentine, J. Thomas 
Project: Project Magnet: Project C32-751: Tutuila Island, American Samoa               
Start Date (YYMMDD): 861130
Survey Departure Airport: Pago Pago, Tutuila, Amer. Samoa  
End Date (YYMMDD): 861130
Survey Arrival Airport: Pago Pago, Tutuila, Amer. Samoa
Flight Line Spacings: GRID: 5 Naut Miles E-W Lines, 3 NM N-S  
Magnetometor(s) Used: Honeywell Flux-Gate Vector            
Aircraft Altitude: 5500 FT Barometric  
Aircraft Velocity: 240 Knots     
Sampling Rates Per Second:   4
Sensor Tow Distance: STINGER
Reference Field:              
Total Observations:       1702
Magnetometor Sensitivity:      1.0 nT
Bounding Limits:
Top Latitude   : -14
Bottom Latitude: -15
Left Longitude : -171
Right Longitude: -170
                                                                             
Data have been edited and mathematically compensated for aircraft orientation 
and magnetic effects.  Ground truth data from an observatory and from a       
localized aeromagnetic survey over the observatory are used as input to a     
computer program that mathematically solves for a set of compensation         
coefficients, which are then applied to the data.  No temporal variations     
have been removed and data below 15,000 feet are not smoothed.                
                                                                              
