Survey Identifier: NAV2070
Format Acronym: ARO88
Data Center File Number: 0560-022
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 2070 ~ 3,671 Nautical Miles
Survey Departure Date (yyyymmdd): 19931129
Survey Arrival Date (yyyymmdd): 19931130
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: 20516
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -15
Bottommost Latitude: -26
Leftmost Longitude: -044
Rightmost Longitude: +018
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: 20514
Datafile Header Info: PJCT=D32-451 FLGT= 2070 ,MTH= 11,DAY= 29, YR=1993,JDY= 333 -TO- 334,RCD= 20518,NAV=GPS ,CMP=RLG
Min/Max Data Record:
Longitude: -43.2667
Latitude: -25.9563
Mag Total Intensity Calc nT: 23524
Time Gmt Sec: 0.4210
Mag East Component Obs nT: 11046
Mag North Component Obs nT: -7805
Mag Horizontal Intensity Calc nT: 11776
Mag Vertical Intensity Obs nT: -26541
Mag Declination Calc Deg: -999.0000
Mag Inclination Calc Deg: -999.0000
Mag Total Intensity Obs nT: 23541
Alt Barometric Ft: 4600
Min/Max Data Record:
Longitude: 17.2506
Latitude: -14.9989
Mag Total Intensity Calc nT: 29630
Time Gmt Sec: 86398.4219
Mag East Component Obs nT: 18618
Mag North Component Obs nT: -3186
Mag Horizontal Intensity Calc nT: 19880
Mag Vertical Intensity Obs nT: -12619
Mag Declination Calc Deg: -14.0512
Mag Inclination Calc Deg: -32.4051
Mag Total Intensity Obs nT: 29634
Alt Barometric Ft: 26056