Online Material

Appendix A: Parameter evolution

In Figs. A.1-A.14 we report the evolution of the flare activity, total magnetic flux $\Phi _{\rm tot}$ , generalized fractal dimension D₈, contribution diversity $C_{\rm d}$ , dimensional diversity $D_{\rm d}$ and volume occupied by the potentially unstable regions I_v for each of the 14 superactive regions.

$\begin{figure} \par\includegraphics[height=14cm]{12044f29.ps} \end{figure}$	Figure A.1: Flare activity, $\Phi _{\rm tot}$ , D₈, $C_{\rm d}$ , $D_{\rm d}$ and I_v vs. time for NOAA 9026.
Open with DEXTER

$\begin{figure} \par\includegraphics[height=14cm]{12044f28.ps} \end{figure}$	Figure A.2: Flare activity, $\Phi _{\rm tot}$ , D₈, $C_{\rm d}$ , $D_{\rm d}$ and I_v vs. time for NOAA 9236.
Open with DEXTER

$\begin{figure} \par\includegraphics[height=14cm]{12044f31.ps} \end{figure}$	Figure A.3: Flare activity, $\Phi _{\rm tot}$ , D₈, $C_{\rm d}$ , $D_{\rm d}$ and I_v vs. time for NOAA 9690.
Open with DEXTER

$\begin{figure} \par\includegraphics[height=14cm]{12044f32.ps} \end{figure}$	Figure A.4: Flare activity, $\Phi _{\rm tot}$ , D₈, $C_{\rm d}$ , $D_{\rm d}$ and I_v vs. time for NOAA 9733.
Open with DEXTER

$\begin{figure} \par\includegraphics[height=14cm]{12044f33.ps} \end{figure}$	Figure A.5: Flare activity, $\Phi _{\rm tot}$ , D₈, $C_{\rm d}$ , $D_{\rm d}$ and I_v vs. time for NOAA 10030.
Open with DEXTER

$\begin{figure} \par\includegraphics[height=14cm]{12044f34.ps} \end{figure}$	Figure A.6: Flare activity, $\Phi _{\rm tot}$ , D₈, $C_{\rm d}$ , $D_{\rm d}$ and I_v vs. time for NOAA 10039.
Open with DEXTER

$\begin{figure} \par\includegraphics[height=14cm]{12044f35.ps} \end{figure}$	Figure A.7: Flare activity, $\Phi _{\rm tot}$ , D₈, $C_{\rm d}$ , $D_{\rm d}$ and I_v vs. time for NOAA 10314.
Open with DEXTER

$\begin{figure} \par\includegraphics[height=14cm]{12044f36.ps} \end{figure}$	Figure A.8: Flare activity, $\Phi _{\rm tot}$ , D₈, $C_{\rm d}$ , $D_{\rm d}$ and I_v vs. time for NOAA 10365.
Open with DEXTER

$\begin{figure} \par\includegraphics[height=14cm]{12044f37.ps} \end{figure}$	Figure A.9: Flare activity, $\Phi _{\rm tot}$ , D₈, $C_{\rm d}$ , $D_{\rm d}$ and I_v vs. time for NOAA 10375.
Open with DEXTER

$\begin{figure} \par\includegraphics[height=14cm]{12044f38.ps} \end{figure}$	Figure A.10: Flare activity, $\Phi _{\rm tot}$ , D₈, $C_{\rm d}$ , $D_{\rm d}$ and I_v vs. time for NOAA 10486.
Open with DEXTER

$\begin{figure} \par\includegraphics[height=14cm]{12044f39.ps} \end{figure}$	Figure A.11: Flare activity, $\Phi _{\rm tot}$ , D₈, $C_{\rm d}$ , $D_{\rm d}$ and I_v vs. time for NOAA 10656.
Open with DEXTER

$\begin{figure} \par\includegraphics[height=14cm]{12044f40.ps} \end{figure}$	Figure A.12: Flare activity, $\Phi _{\rm tot}$ , D₈, $C_{\rm d}$ , $D_{\rm d}$ and I_v vs. time for NOAA 10696.
Open with DEXTER

$\begin{figure} \par\includegraphics[height=14cm]{12044f41.ps} \end{figure}$	Figure A.13: Flare activity, $\Phi _{\rm tot}$ , D₈, $C_{\rm d}$ , $D_{\rm d}$ and I_v vs. time for NOAA 10720.
Open with DEXTER

$\begin{figure} \par\includegraphics[height=14cm]{12044f42.ps} \end{figure}$	Figure A.14: Flare activity, $\Phi _{\rm tot}$ , D₈, $C_{\rm d}$ , $D_{\rm d}$ and I_v vs. time for NOAA 10786.
Open with DEXTER