NDLI: Solar flare and imf sector structure effects in the lower ionosphere

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Solar flare and imf sector structure effects in the lower ionosphere

Content Provider	NASA Technical Reports Server (NTRS)
Author	Lastovicka, J.
Copyright Year	1984
Description	About 1% of all sudden ionospheric disturbances (SIDs) observed at the Panska Ves Observatory (Czechoslovakia), were found to be not of solar-XUV origin. Among them, the very rare SWF events (observed at L = 2.4) of corpuscular origin are the most interesting. The IMF sector structure effects in the midlatitude lower ionosphere are minor in comparison with effects of solar flares, geomagnetic storms, etc. There are two basic types of effects. The first type is a disturbance, best developed in geomagnetic activity, and observed in the night-time ionosphere. It can be interpreted as a response to sector structure related changes of geomagnetic (= magnetospheric) activity. The other type is best developed in the tropospheric vorticity area index and is also observed in the day-time ionosphere in winter. This effect is quietening in the ionosphere as well as troposphere. While the occurrence of the former type is persistent in time, the latter is severely diminished in some periods. All the stratosphere, the 10-mb level temperature and height above Berlin-Tempelhof do not display any observable IMF section structure effect.
File Size	283349
Page Count	7
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19850012176
Archival Resource Key	ark:/13960/t4rj99068
Language	English
Publisher Date	1984-05-01
Access Restriction	Open
Subject Keyword	Solar Physics Radiation Absorption Sudden Ionospheric Disturbances Solar Activity Effects Earth Observations From Space High Energy Electrons Extreme Ultraviolet Radiation Solar Wind Magnetic Storms Boundary Layers Cosmic Rays Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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