Survey Identifier: HS7905
Format Acronym: MGD77
Data Center File Number: J1020020
Parameters Surveyed Code: 5
File Creation Date (yyyymmdd): 19880928
Source Institution: HYDROGRAPHIC DEPT. M.S.A.
Country: JAPAN
Platform Name: SHOYO
Platform Type Code: 1
Platform Type: SHIP
Project: YONAKUNI-SHIMA FUKIN
Survey Departure Date (yyyymmdd): 19791018
Port of Departure: TOKYO
Survey Arrival Date (yyyymmdd): 19791126
Port of Arrival: TOKYO
Navigation Instrumentation: NNSS LORAN-C 9970-X,Y
Geodetic Datum/Position: LORAN
Bathymetry Instrumentation: NNSS LORAN-C 9970-X,Y
Magnetics Instrumentation: PROTON MAG
Topmost Latitude of Survey: +26
Bottommost Latitude: +23
Leftmost Longitude: +121
Rightmost Longitude: +124
General Digitizing Rate of Magnetics: 050
General Sampling Rate of Magnetics: 60
Magnetic Sensor Tow Distance: 250
Reference Field Code: 03
Reference Field: DGRF
Method of Applying Residual Field: DIURNAL CORRECTIONS USING OBSERVATORY DATA
Additional Documentation: magnetics has no times OLD NGDC:56080020
Number of Data Records: 1707
Min/Max Data Record:
Latitude: +23.82995
Longitude: +121.75522
Magnetics Total Field, 1st Sensor: 436800
Min/Max Data Record:
Latitude: +25.40134
Longitude: +123.62304
Magnetics Total Field, 1st Sensor: 479200