Survey Identifier: NAV3156
Format Acronym: ARO88
Data Center File Number: 0480-284
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 3156 ~ 3,212 Nautical Miles
Survey Departure Date (yyyymmdd): 19871116
Survey Arrival Date (yyyymmdd): 19871116
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: 16465
Magnetic Sensitivity: 0.1 nT
Topmost Latitude of Survey: +22
Bottommost Latitude: +13
Leftmost Longitude: +144
Rightmost Longitude: -158
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: 16467
Datafile Header Info: PJCT=C32-851 FLGT= 3156 ,MTH= 11,DAY= 16, YR=1987,JDY= 320 -TO- 320,RCD= 16469,NAV=ESG ,CMP=ESG
Min/Max Data Record:
Longitude: -179.9997
Latitude: 13.3404
Mag Total Intensity Calc nT: 33764
Time Gmt Sec: 46077.3159
Mag East Component Obs nT: 27072
Mag North Component Obs nT: 968
Mag Horizontal Intensity Calc nT: 27545
Mag Vertical Intensity Obs nT: 6305
Mag Declination Calc Deg: 1.5507
Mag Inclination Calc Deg: 9.9592
Mag Total Intensity Obs nT: 33761
Alt Barometric Ft: 600
Min/Max Data Record:
Longitude: 179.9967
Latitude: 21.3891
Mag Total Intensity Calc nT: 36805
Time Gmt Sec: 80815.8018
Mag East Component Obs nT: 35971
Mag North Component Obs nT: 5821
Mag Horizontal Intensity Calc nT: 35998
Mag Vertical Intensity Obs nT: 22967
Mag Declination Calc Deg: 11.9317
Mag Inclination Calc Deg: 39.7157
Mag Total Intensity Obs nT: 36792
Alt Barometric Ft: 31100