Survey Identifier: NAV3157
Format Acronym: ARO88
Data Center File Number: 0480-285
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 C32-851, Flight 3157 ~ 2,973 Nautical Miles
Survey Departure Date (yyyymmdd): 19871121
Survey Arrival Date (yyyymmdd): 19871121
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: 17500
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +39
Bottommost Latitude: +13
Leftmost Longitude: +127
Rightmost Longitude: +149
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: 17500
Datafile Header Info: PJCT=C32-851 FLGT= 3157 ,MTH= 11,DAY= 21, YR=1987,JDY= 325 -TO- 325,RCD= 17502,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: 127.7695
Latitude: 13.2901
Mag Total Intensity Calc nT: 35639
Time Gmt Sec: 40434.3906
Mag East Component Obs nT: 28321
Mag North Component Obs nT: -3246
Mag Horizontal Intensity Calc nT: 28469
Mag Vertical Intensity Obs nT: 6334
Mag Declination Calc Deg: -6.2582
Mag Inclination Calc Deg: 10.1473
Mag Total Intensity Obs nT: 35798
Alt Barometric Ft: 0
Min/Max Data Record:
Longitude: 148.4895
Latitude: 38.3396
Mag Total Intensity Calc nT: 45056
Time Gmt Sec: 76322.2295
Mag East Component Obs nT: 35844
Mag North Component Obs nT: 1515
Mag Horizontal Intensity Calc nT: 35863
Mag Vertical Intensity Obs nT: 34923
Mag Declination Calc Deg: 2.4927
Mag Inclination Calc Deg: 50.8130
Mag Total Intensity Obs nT: 45035
Alt Barometric Ft: 31100