NDLI: Diurnal variations of cosmic ray geomagnetic cut-off threshold rigidities

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Diurnal variations of cosmic ray geomagnetic cut-off threshold rigidities

Content Provider	NASA Technical Reports Server (NTRS)
Author	Tyasto, M. I. Sdobnov, V. E. Danilova, O. A. Sergeev, A. V. Dvornikov, V. M.
Copyright Year	1985
Description	The spectrographic global survey method was used to investigate the rigidity variations Rc of geomagnetic cut-off as a function of local time and the level of geomagnetic disturbance for a number of stations of the world wide network. It is shown that geomagnetic cut-off threshold rigidities undergo diurnal variations. The diurnal wave amplitude decreases with increasing threshold rigidity Rc, and the wave maximum occurs at 2 to 4 hr LT. The amplitude of diurnal variations increases with increasing geomagnetic activity. The results agree with those from trajectory calculations made for an asymmetric model of the magnetosphere during different geomagnetic disturbance conditions.
File Size	304969
Page Count	4
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19850026779
Archival Resource Key	ark:/13960/t8pc7vx03
Language	English
Publisher Date	1985-08-01
Access Restriction	Open
Subject Keyword	Space Radiation Earth Magnetosphere Geomagnetism Spectrographs Flux Density Radiance Diurnal Variations Radiation Measuring Instruments Flux Rate Magnetic Fields 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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