Survey Identifier: NAV3145A


Format Acronym: ARO88
Data Center File Number: 0480-252
Parameters Surveyed Code: FXD
File Creation Date (yyyymmdd): 19890906
Source Institution: US Naval Oceanographic Office
Country: INTERNATIONAL
Platform Name: RP-3D ORION
Platform Type Code: 3
Platform Type: PLANE
Chief Scientists: Fred M. Valentine
Project: Project Magnet: Project C32-754, Flight 3145A ~ 1,557 Nautical Miles
Survey Departure Date (yyyymmdd): 19870819
Survey Arrival Date (yyyymmdd): 19870819
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: 8317
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +15
Bottommost Latitude: +05
Leftmost Longitude: +100
Rightmost Longitude: +121
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: 8319
Datafile Header Info: PJCT=C32-754 FLGT= 3145A ,MTH= 8,DAY= 19, YR=1987,JDY= 231 -TO- 231,RCD= 8321,NAV=ESG ,CMP=ESG

Min/Max Data Record:
Longitude: 100.6183
Latitude: 5.9102
Mag Total Intensity Calc nT: 40199
Time Gmt Sec: 5274.8180
Mag East Component Obs nT: 39385
Mag North Component Obs nT: -409
Mag Horizontal Intensity Calc nT: 39387
Mag Vertical Intensity Obs nT: -4617
Mag Declination Calc Deg: -0.5776
Mag Inclination Calc Deg: -6.4626
Mag Total Intensity Obs nT: 40209
Alt Barometric Ft: 600

Min/Max Data Record:
Longitude: 120.1796
Latitude: 14.5501
Mag Total Intensity Calc nT: 42040
Time Gmt Sec: 24645.9700
Mag East Component Obs nT: 41074
Mag North Component Obs nT: 395
Mag Horizontal Intensity Calc nT: 41076
Mag Vertical Intensity Obs nT: 10278
Mag Declination Calc Deg: 0.5573
Mag Inclination Calc Deg: 14.6247
Mag Total Intensity Obs nT: 41943
Alt Barometric Ft: 24000