caa a22 4500 445346647 CHVBK 20180317142830.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s11207-010-9701-6 doi (NATIONALLICENCE)springer-10.1007/s11207-010-9701-6 Analysis of Sunspot Variability Using theHilbert - Huang Transform [Elektronische Daten] [Bradley Barnhart, William Eichinger] The Hilbert - Huang transform is a relatively new data analysis technique, which is able to analyze the cyclic components of a potentially nonlinear and nonstationary data series. Monthly sunspot number data from 1749 to 2010 were analyzed using this technique, which revealed the different variability inherent in the data including the 11-year (Schwabe), 20 - 50-year (quasi-Hale) and 60 - 120-year (Gleissberg) cycles. The results were compared with traditional Fourier analysis. The Hilbert - Huang transform is able to provide a local and adaptive description of the intrinsic cyclic components of sunspot number data, which are nonstationary and which are the result of nonlinear processes. Springer Science+Business Media B.V., 2010 Hilbert - Huang transform nationallicence Empirical mode decomposition nationallicence EMD nationallicence Sunspots nationallicence Barnhart Bradley University of Iowa, 52240, Iowa City, IA, USA aut Eichinger William University of Iowa, 52240, Iowa City, IA, USA aut Solar Physics Springer Netherlands 269/2(2011-04-01), 439-449 0038-0938 269:2<439 2011 269 11207 https://doi.org/10.1007/s11207-010-9701-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11207-010-9701-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Barnhart Bradley University of Iowa, 52240, Iowa City, IA, USA aut NATIONALLICENCE 700 1- Eichinger William University of Iowa, 52240, Iowa City, IA, USA aut NATIONALLICENCE 773 0- Solar Physics Springer Netherlands 269/2(2011-04-01), 439-449 0038-0938 269:2<439 2011 269 11207 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer