Fig. 2

Wave packet propagation for element 14: amplitude (a–c) and frequency (d–f) profiles. Panels b and e show spatial profiles at \(t=10\) s (dashed red line), 25 s (solid red line), 45 s (dashed green line) and 60 s (solid green line). Panels c and f show temporal profiles at the satellite location \(z=z_\text {S}\) (black solid line), black markers represent the data from Fig. 1. Times 10; 25; 45 and 60 s are shown in panels a, d by horizontal lines and in panels c, f by vertical lines. Location \(z=z_\text {S}\) is shown in panels a, d, b, e by vertical lines