thirty-year periodicity of cosmic rays
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2012
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Abstract
Cosmogenic isotopes have frequently been employed as proxies of ancient cosmic ray fluxes. On the basis of periodicities of the 10Be time series (using data from both the South and North Poles) and the 14C time series (with data from Intercal-98), we offer evidence of the existence of cosmic ray fluctuations with a periodicity of around 30 years. Results were obtained by using the wavelet transformation spectral technique, signal reconstruction by autoregressive spectral analysis (ARMA), and the Lomb-Scargle periodogram method. This 30-year periodicity seems to be significant in nature because several solar and climatic indexes exhibit the same modulation, which may indicate that the 30-year frequency of cosmic rays is probably a modulator agent for terrestrial phenomena, reflecting the control source, namely, solar activity.
| Reference Key |
prez-peraza2012advancesthirty-year
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|---|---|
| Authors | ;Jorge Pérez-Peraza;Víctor Velasco;Igor Ya. Libin;K. F. Yudakhin |
| Journal | chemistry - a european journal |
| Year | 2012 |
| DOI |
10.1155/2012/691408
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| URL | |
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