Historical <i>K</i> index data collection of Soviet magnetic observatories, 1957–1992
<p>The <span class="inline-formula"><i>K</i></span> 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 time series of homogeneous <spa...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2021-05-01
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| Series: | Earth System Science Data |
| Online Access: | https://essd.copernicus.org/articles/13/1987/2021/essd-13-1987-2021.pdf |