𝔖 Bobbio Scriptorium
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A note on the annual variation of geomagnetic activity and M -regions

✍ Scribed by Tandon, J. N.


Book ID
119722395
Publisher
American Geophysical Union
Year
1956
Tongue
English
Weight
132 KB
Volume
61
Category
Article
ISSN
0148-0227

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The seasonal variation of the geomagnetic activity shows two sharp maxima (in March and September) and two broader minima (in June and December). It can only poorly be described by a double sine wave. The double phase wave of geomagnetic activity can be transformed -by vertical mirroring of the hal