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Sun Activity Ranking & Summary
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- Language:
- English
- Price:
- Free
- Publisher Name:
- Nikolay Petrov
- Publisher web site:
- File Size:
- 47.8 MB
Sun Activity Tags
Sun Activity Description
Get the latest geomagnetic storm data the K-index The K-index quantifies disturbances in the horizontal component of earth's magnetic field with an integer in the range 0-9 with 1 being calm and 5 or more indicating a geomagnetic storm. It is derived from the maximum fluctuations of horizontal components observed on a magnetometer during a three-hour interval. The label 'K' comes from the German word 'Kennziffer' meaning 'characteristic digit.' The K-index was introduced by Julius Bartels in 1938. The official planetary Kp index is derived by calculating a weighted average of K-indices from a network of geomagnetic observatories. Since these observatories do not report their data in real-time, various operations centers around the globe estimate the index based on data available from their local network of observatories.
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