Geomagnetic activity and wind velocity during the Maunder minimum
Following a given classification of geomagnetic activity, we obtained <i>aa</i> index values for the Maunder minimum (1645–1715). It is found that the recurrent and fluctuating activities were not appreciable and that the shock activity levels were very low. The <i>aa</i>...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
1997-04-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/15/397/1997/angeo-15-397-1997.pdf |