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https://doi.org/10.5194/essd-2020-270
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-2020-270
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  05 Oct 2020

05 Oct 2020

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This preprint is currently under review for the journal ESSD.

Historical K index data collection of Soviet magnetic observatories, 1957–1992

Natalia Sergeyeva1, Alexei Gvishiani1,2, Anatoly Soloviev1,2, Lyudmila Zabarinskaya1, Tamara Krylova1, Mikhail Nisilevich1, and Roman Krasnoperov1 Natalia Sergeyeva et al.
  • 1Geophysical Center of the Russian Academy of Sciences, Moscow, 119296, Russia
  • 2Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences, Moscow, 123242, Russia

Abstract. K index is one of the oldest universal indices of geomagnetic activity, introduced in 1938 by Julius Bartels, that is still being widely used. Up to the present day, long-term timeseries of homogeneous K index records have been accumulated at data repositories all over the world. The multidecadal practice of its application makes it an indispensable source of information for retrospective analysis of solar-terrestrial interaction for nearly eight Solar cycles. Most significantly, while studying the historical geomagnetic data, K index datasheets are in certain cases far easier for automated analysis than the conventional analogue magnetograms. The presented collection includes the results of the K index determination at 41 geomagnetic observatories of the former USSR for the period from July 1957 to early 1990s. This unique collection was formed at the World Data Center for Solar-Terrestrial Physics in Moscow. The historical data, which are offered to the international scientific community, cover the second half of the 20th century and can be used for retrospective analysis and study of geomagnetic events in the past as well as for data validation or forecasting (Sergeyeva et al., 2020). The dataset is available at: https://doi.org/10.1594/PANGAEA.922233, last access: 16 September 2020.

Natalia Sergeyeva et al.

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Historical K index data collection of Soviet magnetic observatories, 1957-1992 Natalia Sergeyeva, Alexei Gvishiani, Anatoly Soloviev, Lyudmila Zabarinskaya, Tamara Krylova, Mikhail Nisilevich, and Roman Krasnoperov https://doi.org/10.1594/PANGAEA.922233

Natalia Sergeyeva et al.

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Short summary
K index is the classical commonly used parameter of geomagnetic activity that serves as the measure of local magnetic field variations. This paper presents a unique collection of historical K index values that was formed at the World Data Center for Solar-Terrestrial Physics in Moscow. It includes the results of the K index determination at 41 geomagnetic observatories of the former USSR for the period from July 1957 to early 1990s.
K index is the classical commonly used parameter of geomagnetic activity that serves as the...
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