All Figures

$\begin{figure} \par\includegraphics{9182fig1.eps} \end{figure}$ Figure 1: An example of DAM dynamic spectra with clear arc pattern is recorded 2000 September 26 in the Nancay Radio Observatory.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics{9182fig2.eps} \end{figure}$ Figure 2: The main types of the autocorrelation function of spectral intensity in Io-A radio storms: a) the periodic single arcs (2000 October 27); b) the periodic groups of arcs (2001 October 31); c) irregularly spaced single arcs (2005 February 10); d) irregularly spaced groups of arcs (2005 January 27); e) the background noise with low level of interference (2001 November 2007); f) the idealized scheme of measurements for the time scale of arcs ( $\Delta t$ ) and arc groups ( $\Delta T$ ) on the central details of the function.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics{9182fig3.eps} \end{figure}$ Figure 3: Examples of DAM dynamic spectra with arc grouping in periodic macro-structures of deca-minute time scale: a), b) the original spectra (Nancay Radio Observatory archive; right-hand polarization); c), d) the visualization of macro-patterns.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics{9182fig4.eps} \end{figure}$ Figure 4: Other types of deca-minute DAM modulation: a)- c) isolated arcs (Nancay Radio Observatory archive; right-hand polarization channel); d) undulations of the Io-C arc (Nancay Radio Observatory; left-hand polarization channel).
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics{9182fig5.eps} \end{figure}$ Figure 5: Histograms of the dominating time scale of radio-storm interior structure in a dynamic spectrum of DAM. The fundamental period of transverse magnetic oscillations in the Io torus (FO) and the first harmonic (H1) are marked according to Glassmeier et al. (1989). The standard classification of DAM storm is used with the polarization channel in the brackets.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics{9182fig6.eps} \end{figure}$ Figure 6: The histogram of the $\Delta T$ estimates (i.e. arc group duration) shows an excess of DAM variations with time scales similar to the fundamental (FO) and first harmonic (H1) periods of transversal Alfvénic oscillations in the Io torus, according to Glassmeier et al. (1989).
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=6.5cm,clip]{9182fig7.eps} \end{figure}$ Figure 7: Variations of the yearly estimate of the dominating time scale in DAM storm structure.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics{9182fig8.eps} \end{figure}$ Figure 8: The histogram of the $\Delta t$ estimates shows the time scale of the arc pattern at fixed frequencies from 10 MHz to 35 MHz.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics{9182fig9.eps} \end{figure}$ Figure 9: Io can excite the resonance oscillations in 3rd harmonic of the Io plasma torus (grey band) during the most powerful DAM storms, when Io's position coincides with the maximum of the standing Alfvén wave. This Alfvén wave can accelerate electrons and modulate related DAM with periods of 5-6 min.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics{9182fig1.eps} \end{figure}$	Figure 1: An example of DAM dynamic spectra with clear arc pattern is recorded 2000 September 26 in the Nancay Radio Observatory.
Open with DEXTER

$\begin{figure} \par\includegraphics{9182fig3.eps} \end{figure}$	Figure 3: Examples of DAM dynamic spectra with arc grouping in periodic macro-structures of deca-minute time scale: a), b) the original spectra (Nancay Radio Observatory archive; right-hand polarization); c), d) the visualization of macro-patterns.
Open with DEXTER

$\begin{figure} \par\includegraphics{9182fig4.eps} \end{figure}$	Figure 4: Other types of deca-minute DAM modulation: a)- c) isolated arcs (Nancay Radio Observatory archive; right-hand polarization channel); d) undulations of the Io-C arc (Nancay Radio Observatory; left-hand polarization channel).
Open with DEXTER

$\begin{figure} \par\includegraphics{9182fig5.eps} \end{figure}$	Figure 5: Histograms of the dominating time scale of radio-storm interior structure in a dynamic spectrum of DAM. The fundamental period of transverse magnetic oscillations in the Io torus (FO) and the first harmonic (H1) are marked according to Glassmeier et al. (1989). The standard classification of DAM storm is used with the polarization channel in the brackets.
Open with DEXTER

$\begin{figure} \par\includegraphics{9182fig6.eps} \end{figure}$	Figure 6: The histogram of the $\Delta T$ estimates (i.e. arc group duration) shows an excess of DAM variations with time scales similar to the fundamental (FO) and first harmonic (H1) periods of transversal Alfvénic oscillations in the Io torus, according to Glassmeier et al. (1989).
Open with DEXTER

$\begin{figure} \par\includegraphics[width=6.5cm,clip]{9182fig7.eps} \end{figure}$	Figure 7: Variations of the yearly estimate of the dominating time scale in DAM storm structure.
Open with DEXTER

$\begin{figure} \par\includegraphics{9182fig8.eps} \end{figure}$	Figure 8: The histogram of the $\Delta t$ estimates shows the time scale of the arc pattern at fixed frequencies from 10 MHz to 35 MHz.
Open with DEXTER

$\begin{figure} \par\includegraphics{9182fig9.eps} \end{figure}$	Figure 9: Io can excite the resonance oscillations in 3rd harmonic of the Io plasma torus (grey band) during the most powerful DAM storms, when Io's position coincides with the maximum of the standing Alfvén wave. This Alfvén wave can accelerate electrons and modulate related DAM with periods of 5-6 min.
Open with DEXTER