Survey Identifier: NAV4164
Format Acronym: ARO88
Data Center File Number: 0560-037
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 D32-352: Flight 4164 ~ 3,748 Nautical Miles
Survey Departure Date (yyyymmdd): 19930211
Survey Arrival Date (yyyymmdd): 19930211
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: 20285
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: -04
Bottommost Latitude: -18
Leftmost Longitude: +127
Rightmost Longitude: +178
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: 20281
Datafile Header Info: PJCT=D32-352 FLGT= 4164 ,MTH= 2,DAY= 11, YR=1993,JDY= 42 -TO- 42,RCD= 20287,NAV=GPS ,CMP=RLG
Min/Max Data Record:
Longitude: 127.4402
Latitude: -17.7994
Mag Total Intensity Calc nT: 41996
Time Gmt Sec: 42921.8047
Mag East Component Obs nT: 32591
Mag North Component Obs nT: 1186
Mag Horizontal Intensity Calc nT: 33385
Mag Vertical Intensity Obs nT: -29818
Mag Declination Calc Deg: 1.7940
Mag Inclination Calc Deg: -39.8927
Mag Total Intensity Obs nT: 41971
Alt Barometric Ft: 837
Min/Max Data Record:
Longitude: 177.3681
Latitude: -4.0071
Mag Total Intensity Calc nT: 46501
Time Gmt Sec: 83762.3672
Mag East Component Obs nT: 37904
Mag North Component Obs nT: 7373
Mag Horizontal Intensity Calc nT: 37923
Mag Vertical Intensity Obs nT: -18198
Mag Declination Calc Deg: 12.6954
Mag Inclination Calc Deg: -25.6707
Mag Total Intensity Obs nT: 46502
Alt Barometric Ft: 26292