Assessment of Planetary Indices of Geomagnetic Activity Based on Data from Individual Magnetic Observatories in the Russian Sector

• Published in: Geomagnetism and Aeronomy Vol. 61; no. 4; pp. 531 - 539
• Main Authors: Petrov, V. G., Gamza, E. I.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-07-2021; Springer Nature B.V
• Subjects: Earth and Environmental Science; Earth Sciences; Geomagnetic activity; Geomagnetism; Geophysics/Geodesy; KP index; Observatories; Stations
• ISSN: 0016-7932; 1555-645X; 0016-7940
• DOI: 10.1134/S0016793221040125

The relationships between local indices at stations in the Russian sector and the planetary
Ap
and
Kp
indices and the potential to evaluate planetary indices based on local values are studied. It is shown that the local indices of observatories in western Russian make it possible to estimate the values of the global indices rather well. Estimates of global indices based on data from the central and eastern stations of the Russian sector are less reliable, but this may be due to the lack of
Kp
-network observatories and stations in this sector, as well as underestimation of the global geomagnetic activity at 0900–1500 UT based the
Kp
index itself.