Articles | Volume 13, issue 5
Earth Syst. Sci. Data, 13, 1987–1999, 2021
Earth Syst. Sci. Data, 13, 1987–1999, 2021

Data description paper 11 May 2021

Data description paper | 11 May 2021

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

Natalia Sergeyeva et al.

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Cited articles

Anisimov, C. V., Dmitriev, E. M., Guryev, A. V., and Filippov, V. A.: Calculation of K-indices of geomagnetic activity in real time, Heliogeophys. Res., 13, 62–72, 2015 (in Russian). 
Bartels, J.: Potsdamer erdmagnetische Kennziffern, 1. Mitteilung, Z. Geophys., 14, 68–78, 1938 (in German). 
Bartels, J.: Potsdamer erdmagnetische Kennziffern, 4. Mitteilung, Z. Geophys., 15, 214–221, 1939 (in German). 
Bartels, J.: The standardized index, Ks, and the planetary index, Kp, IATME Bull., 12b, Washington, DC, USA, 97–120, 1949. 
Bartels, J., Heck, N. H., and Johnston, H. F.: The three-hour-range index measuring geomagnetic activity, J. Geophys. Res., 44, 411–454,, 1939. 
Short summary
The 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 the early 1990s.