Please use this identifier to cite or link to this item:
http://library.iigm.res.in:8080/xmlui/handle/123456789/64
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Rangarajan, G.K. | |
dc.date.accessioned | 2015-05-13T06:21:02Z | |
dc.date.accessioned | 2021-02-12T09:34:13Z | - |
dc.date.available | 2015-05-13T06:21:02Z | |
dc.date.available | 2021-02-12T09:34:13Z | - |
dc.date.issued | 1998 | |
dc.identifier.citation | Earth Planets Space,v.50, p.91-100, 1998, doi: 10.1186/BF03352090 | en_US |
dc.identifier.uri | http://localhost:8080/xmlui/handle/123456789/64 | - |
dc.description.abstract | The series of annual mean relative sunspot numbers (R z) for 1749–1996 is subjected to the recently developed methodology of Singular Spectrum Analysis (SSA). This technique also enables data-adaptive filtering of the individual spectral components. Low order autoregressive modelling of the components are combined to provide a basis for predicting the solar cycle 23. The R z series is largely dominated by a doublet with periods 11.13 and 10.35 yr. close to the nominal solar cycle periodicity, a longer period variation (~110 yr.) which is the envelope of the amplitude maxima and two clusters of periodicities centred around 8 yr. and 5.5 yr. The solar magnetic cycle has no detectable component. The predicted maximum for cycle 23 will have a magnitude of ~130 and the epoch of maximum is expected between late 2000 A.D. and early 2001 A.D. | en_US |
dc.language.iso | en | en_US |
dc.subject | Predict solar cycle | en_US |
dc.subject | Relative sunspot numbers | en_US |
dc.subject | Singular spectrum analysis | en_US |
dc.title | Sunspot variablity and an attempt to predict solar cycle 23 by adaptive filtering | en_US |
dc.type | Article | en_US |
dc.identifier.accession | 090553 | |
Appears in Collections: | UAS_Reprints |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
RangarajanGK_EarthPlanetsSpace_1998.pdf | 498.15 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.