Interhourly variability index of geomagnetic activity and its use in deriving the long-term variation of solar wind speed

We describe the detailed derivation of the interhourly variability (IHV) index of geomagnetic activity. The IHV index for a given geomagnetic element is mechanically derived from hourly values or means as the sum of the unsigned differences between adjacent hours over a 7‐hour interval centered on l...

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Veröffentlicht in:	Journal of Geophysical Research: Space Physics 2007-10, Vol.112 (A10), p.n/a
Hauptverfasser:	Svalgaard, Leif, Cliver, Edward W.
Format:	Artikel
Sprache:	eng
Schlagworte:	Earth sciences Earth, ocean, space Exact sciences and technology geomagnetic IHV long-term
Online-Zugang:	Volltext
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