MGD77 Data (Bathymetry, Geomagnetism, Gravity)

MGD77 data is displayed by each one file per one cruise (voyage).
Each file is separated by two records as below:

Data Source:Domestic organizations concerned and National Geophysical Data Center (NGDC).
Sea Region:All of the ocean which centered in the sea near Japan
Time Period:1949 - 2002
Data Volume:622 files
Bathymetry-----2,133,777 stations
Geomagnetism---4,636,814 stations
Gravity--------4,472,594 stations

[File Format]Data File Format

[Access to DB]Database access


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Updated : September 2006