Short-period variation of cosmic-ray intensity observed in the stratosphere

Details Short-period variation of cosmic-ray intensity observed in the stratosphere Short-period variation of cosmic-ray intensity observed in the stratosphere

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ncimc..12..811b&link_type=abstract

Nuovo Cimento C, Serie 1 (ISSN 0390-5551), vol. 12 C, Nov.-Dec. 1989, p. 811-818.

Computer Science

Sound

1

Balloon Sounding, Cosmic Rays, Particle Flux Density, Periodic Variations, Stratosphere, Balloon-Borne Instruments, Geomagnetism, Solar Activity Effects

Scientific paper

To investigate the variation of the cosmic-ray intensity in the earth's atmosphere, stratospheric balloon soundings are performed weekly at Campinas (Brazil). During the flight of May 20, 1988, short-period variations were detected. Through Fourier analysis, a period of about 2.5 min was identified with a confidence level of 99.6 percent between 23 g/sq cm and 173 g/sq cm. Apparently, these oscillations are not correlated either with the earth magnetic field or solar activity, suggesting their atmospheric origin; nevertheless, it is difficult to explain the production mechanisms of these disturbances.

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