Survey Identifier: HS7802
Format Acronym: MGD77
Data Center File Number: J1020019
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: IZU SHOTO FUKIN
Survey Departure Date (yyyymmdd): 19780419
Port of Departure: TOKYO
Survey Arrival Date (yyyymmdd): 19780517
Port of Arrival: TOKYO
Magnetics Instrumentation: PROTON MAG
Topmost Latitude of Survey: +35
Bottommost Latitude: +32
Leftmost Longitude: +138
Rightmost Longitude: +141
General Digitizing Rate of Bathymetry: 100
General Sampling Rate of Bathymetry: 1/SECOND
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 07
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:56080019
Number of Data Records: 4232
Min/Max Data Record:
Latitude: +32.99342
Longitude: +138.82340
Magnetics Total Field, 1st Sensor: 438900
Magnetics Residual Field: -05896
Min/Max Data Record:
Latitude: +34.39372
Longitude: +140.40017
Magnetics Total Field, 1st Sensor: 457600
Magnetics Residual Field: +09799