• Geomagnetic data
  • Geoelectric data
  • Atmospheric electric data
  • Observational investigation
  • Geomagnetic event catalogs
  • Annual means of geomagnetic data

  • 

    Memambetsu Geomagnetic Field

    Annual mean digital data

    from 1958-01-01T00:00:00 to 1 year ago (-P1Y)

    Geomagnetic field (MMB)

    definitive

    DIHXYZF

    1-hour digital data

    from 1958-01-01T00:00:00 to 1 month ago (-P1M)

    Geomagnetic field (MMB)

    definitive

    DHZF

    1-minute digital data

    from 1985-01-01T00:00:00 to 1 month ago (-P1M)

    Geomagnetic field (MMB)

    definitive

    DHZF

    1-minute data digitized from magnetograms

    from 1967-01-01T00:00:00 to 1984-12-31T23:59:00

    Geomagnetic field digitized from magnetograms (MMB)

    quasi-definitive

    DHZF

    1-second digital data

    from 1997-04-01T00:00:00 to 1 month ago (-P1M)

    Geomagnetic field (MMB)

    definitive

    DHZF or XYZF

    7.5-second data digitized from magnetograms

    from 1967-01-01T00:00:00 to 1984-12-31T23:59:59

    Geomagnetic field digitized from magnetograms (MMB)

    quasi-definitive

    DHZF

    1-decisecond digital data

    from 1997-04-01T00:00:00 to 1 month ago (-P1M)

    Geomagnetic field (MMB)

    variation

    XYZF

    Analog magnetograms

    from 1962-01-01T00:00:00 to 1984-12-31T23:59:59

    Geomagnetic field (MMB)

    variation

    DHZ