New Insights on Cosmic Ray Modulation through a Joint Use of Nonstationary Data-Processing Methods
Joint Authors
Laurenza, M.
Storini, M.
Carbone, V.
Vecchio, A.
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-12-09
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
The time variability of the cosmic ray (CR) intensity, recorded by the Climax neutron monitor and covering the period 1953–2004, has been analyzed by the joint application of the wavelet and the empirical mode decomposition (EMD) analyses.
Dominant time scales of variability are found at ~11 yr, ~22 yr, ~6 yr and in the range of the quasi-biennial oscillations (QBOs).
The combination of the 11 yr cycle and QBOs explains the Gnevychev Gap (GG) phenomenon and many step-like decreases characterizing the CR modulation.
The additional scales of variability at ~22 yr and ~6 yr are responsible for other features of the long-term CR trend, such as the intensity flat-topped profile, following the maxima of even-numbered cycles during positive polarity state of the heliosphere (A>0).
Comparison with basic time scales of variability derived from the sunspot area (SA) allows the association of the 11 yr cycle and QBOs with solar activity variations, whereas the other two modes with the drift effects govern the CR entrance in the heliosphere.
American Psychological Association (APA)
Vecchio, A.& Laurenza, M.& Storini, M.& Carbone, V.. 2012. New Insights on Cosmic Ray Modulation through a Joint Use of Nonstationary Data-Processing Methods. Advances in Astronomy،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-501827
Modern Language Association (MLA)
Vecchio, A.…[et al.]. New Insights on Cosmic Ray Modulation through a Joint Use of Nonstationary Data-Processing Methods. Advances in Astronomy No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-501827
American Medical Association (AMA)
Vecchio, A.& Laurenza, M.& Storini, M.& Carbone, V.. New Insights on Cosmic Ray Modulation through a Joint Use of Nonstationary Data-Processing Methods. Advances in Astronomy. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-501827
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-501827