The magnetic energy of nonlinear Alfvén waves in compressible plasmas may be ponderomotively coupled only to ion-acoustic quasi-modes which modulate the wave phase velocity and cause wave-front steepening. In the collisionless plasma with β 6= 0, the dynamics of nonlinear Alfvén wave is also affected by the resonant particle-wave interactions. Upon relatively rapid evolution (compared to the pa...

The continuous wavelet transform is employed to analyze the dynamics and time-dependent energy distribution of phonon wave-packet propagation and scattering in molecular dynamics simulations. The equations of the one-dimensional continuous wavelet transform are presented and then discretized for implementation. Practical aspects and limitations of the transform are discussed, with attention to ...

Oscillation phase dynamics in the homogeneous autooscillating Belousov-Zhabotinsky (BZ) reaction has been studied by computer simulations. The wave dynamics in autooscillating media is qualitatively di erent from those in excitable media for su ciently long waves. We propose a classi cation of chemical waves which is based on the analysis of shape of the dispersion curve. This delimits conventi...