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Long-term variation of the semi-annual wave maxima in geomagnetic activity

✍ Scribed by Emil M. Apostolov; Vojtěch Letfus; J. Pýcha

Book ID
112581056
Publisher
Springer
Year
1989
Tongue
English
Weight
802 KB
Volume
33
Category
Article
ISSN
0039-3169

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The representation of the semi-annual va
The representation of the semi-annual variation of the geomagnetic activity by an annual sine wave
✍ J. Houtgast; A. Sluiters 📂 Article 📅 1973 🏛 Springer 🌐 English ⚖ 541 KB

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