caa a22 4500 44534749X CHVBK 20180317142833.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1007/s11207-011-9801-y doi (NATIONALLICENCE)springer-10.1007/s11207-011-9801-y Evolution of Solar and Geomagnetic Activity Indices, and Their Relationship: 1960 - 2001 [Elektronische Daten] [G. Verbanac, M. Mandea, B. Vršnak, S. Sentic] We employ annually averaged solar and geomagnetic activity indices for the period 1960 - 2001 to analyze the relationship between different measures of solar activity as well as the relationship between solar activity and various aspects of geomagnetic activity. In particular, to quantify the solar activity we use the sunspot number R s, group sunspot number R g, cumulative sunspot area Cum, solar radio flux F10.7, and interplanetary magnetic field strength IMF. For the geomagnetic activity we employ global indices Ap, Dst and Dcx, as well as the regional geomagnetic index RES, specifically estimated for the European region. In the paper we present the relative evolution of these indices and quantify the correlations between them. Variations have been found in: i) time lag between the solar and geomagnetic indices; ii) relative amplitude of the geomagnetic and solar activity peaks; iii)dual-peak distribution in some of solar and geomagnetic indices. The behavior of geomagnetic indices is correlated the best with IMF variations. Interestingly, among geomagnetic indices, RES shows the highest degree of correlation with solar indices. Springer Science+Business Media B.V., 2011 Cross-correlation nationallicence Geoeffectiveness nationallicence Geomagnetic global and regional activity indices nationallicence Solar activity indices nationallicence Verbanac G. Faculty of Science, University of Zagreb, Horvatovac bb, 10000, Zagreb, Croatia aut Mandea M. Université Paris Diderot—Institut de Physique du Globe de Paris, Paris, France aut Vršnak B. Faculty of Geodesy, Hvar Observatory, Kačićeva 26, 10000, Zagreb, Croatia aut Sentic S. Department of Civil Engineering and Geological Sciences, University of Notre Dame, 4656, Notre Dame, IN, USA aut Solar Physics Springer Netherlands 271/1-2(2011-07-01), 183-195 0038-0938 271:1-2<183 2011 271 11207 https://doi.org/10.1007/s11207-011-9801-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11207-011-9801-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Verbanac G. Faculty of Science, University of Zagreb, Horvatovac bb, 10000, Zagreb, Croatia aut NATIONALLICENCE 700 1- Mandea M. Université Paris Diderot—Institut de Physique du Globe de Paris, Paris, France aut NATIONALLICENCE 700 1- Vršnak B. Faculty of Geodesy, Hvar Observatory, Kačićeva 26, 10000, Zagreb, Croatia aut NATIONALLICENCE 700 1- Sentic S. Department of Civil Engineering and Geological Sciences, University of Notre Dame, 4656, Notre Dame, IN, USA aut NATIONALLICENCE 773 0- Solar Physics Springer Netherlands 271/1-2(2011-07-01), 183-195 0038-0938 271:1-2<183 2011 271 11207 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer