Survey Identifier: NAV1226
Format Acronym: ARO88
Data Center File Number: 0560-010
Parameters Surveyed Code: FXD
File Creation Date (yyyymmdd): 19940506
Source Institution: US Naval Oceanographic Office
Country: INTERNATIONAL
Platform Name: RP-3D ORION
Platform Type Code: 3
Platform Type: PLANE
Chief Scientists: Donald R. Wilson
Project: Project Magnet: Project D32-451: Flight 1226 ~ 3,635 Nautical Miles
Survey Departure Date (yyyymmdd): 19931205
Survey Arrival Date (yyyymmdd): 19931206
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: 19181
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +29
Bottommost Latitude: +18
Leftmost Longitude: -045
Rightmost Longitude: -015
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: 19181
Datafile Header Info: PJCT=D32-451 FLGT= 1226 ,MTH= 12,DAY= 5, YR=1993,JDY= 339 -TO- 340,RCD= 19183,NAV=GPS ,CMP=RLG
Min/Max Data Record:
Longitude: -44.9406
Latitude: 18.7614
Mag Total Intensity Calc nT: 33962
Time Gmt Sec: 1.2760
Mag East Component Obs nT: 26863
Mag North Component Obs nT: -8468
Mag Horizontal Intensity Calc nT: 28161
Mag Vertical Intensity Obs nT: 13448
Mag Declination Calc Deg: -999.0000
Mag Inclination Calc Deg: -999.0000
Mag Total Intensity Obs nT: 33957
Alt Barometric Ft: 627
Min/Max Data Record:
Longitude: -15.2917
Latitude: 28.0116
Mag Total Intensity Calc nT: 38893
Time Gmt Sec: 86399.2734
Mag East Component Obs nT: 30676
Mag North Component Obs nT: -4041
Mag Horizontal Intensity Calc nT: 31251
Mag Vertical Intensity Obs nT: 26326
Mag Declination Calc Deg: -7.6666
Mag Inclination Calc Deg: 43.0650
Mag Total Intensity Obs nT: 38908
Alt Barometric Ft: 26824