Physics – Geophysics
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm11b1579m&link_type=abstract
American Geophysical Union, Fall Meeting 2009, abstract #SM11B-1579
Physics
Geophysics
[2721] Magnetospheric Physics / Field-Aligned Currents And Current Systems, [2794] Magnetospheric Physics / Instruments And Techniques, [3280] Mathematical Geophysics / Wavelet Transform
Scientific paper
A wavelet based method of deconvoluting the solar quiet variation from the low and mid-latitude H-component records is proposed. This approach uses data from multiple stations, involves wavelet analysis techniques, and functional principal component analysis. The procedure removes the signature of an enhanced ring current by comparing the scores at different stations. The resulting daily variation is non-constant, and its day-to-day variability is quantified by principal component scores. The method is fully algorithmic and is implemented in the open source statistical software R package WAMI. It can be computed in real time over the moving window as soon as new magnetogram records become available.
Kokoszka Piotr
Maslova I.
Sojka Jan J.
Zhu Lijun
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