36 citations · 170 across the 8 of their papers we have counts for
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astro-ph.SR2015★ 26 cited
Occurrence of high-speed solar wind streams over the Grand Modern Maximum
Kalevi Mursula, Renata Lukianova, Lauri Holappa
In the declining phase of the solar cycle, when the new-polarity fields of the solar poles are strengthened by the transport of same-signed magnetic flux from lower latitudes, the…
astro-ph.SR2015★ 36 cited
A new method to estimate annual solar wind parameters and contributions of different solar wind structures to geomagnetic activity
Lauri Holappa, Kalevi Mursula, Timo Asikainen
In this paper, we study two sets of local geomagnetic indices from 26 stations using the principal component (PC) and the independent component (IC) analysis methods. We demonstrat…