Computer Science
Scientific paper
Aug 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....5..375a&link_type=abstract
In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 5 p 375-378 (SEE N85-34991 23-93)
Computer Science
Auroras, Cosmic Rays, Secular Variations, Solar Cycles, Terrestrial Radiation, Beryllium 10, Solar Activity Effects, Solar Wind, Thermoluminescence, Time Series Analysis
Scientific paper
The rediscovery that the Sun and the solar wind can undergo important changes on historical time scales has brought into question the stability of the cyclic behavior of past time series of solar and solar-terrestrial origin. It was found by Vector Fourier analysis that the solar 11 year cycle is present in the series of 10Be, delta 180, in ice cores and of thermoluminescence (TL) in sea sediments during the last Millennia with a frequency modulation, related to the Sun behavior, as tested by comparison with the Sunspot number Rz series. It was shown that the cyclogram of the series of yearly Aurorae from 1721 to 1979 linear-regression-corrected-for-Rz is straight for the periodicity zeta=11,1y, which indicates that such periodicity is constant in time corresponding to the only line present in the 11y band. The maxima of this component appear at the same time together with the high speed solar wind streams taking place in coronal holes situated in high heliolatitudes. It is evidenced that the 11 year cycle has undergone frequency oscillations on a time scale of two centuries, although it is very difficult to determine the periodicities with high accuracy.
Attolini M. R.
Bonino Gianfranco
Castagnoli Cini G.
Galli Marcello
Nanni Teresa
No associations
LandOfFree
Cosmic ray secular variations in terrestrial records and aurorae does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Cosmic ray secular variations in terrestrial records and aurorae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmic ray secular variations in terrestrial records and aurorae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-757076