Fig. 2
From: Nonlinear triggering process of whistler-mode emissions in a homogeneous magnetic field
Temporal and spatial evolution of magnetic field amplitudes of forward waves a–d with the triggering wave and e–h without the triggering. The duration times of the triggering wave are a, e 980 \(\Omega _e^{-1}\); b, f 230 \(\Omega _e^{-1}\); c, g 105 \(\Omega _e^{-1}\), and d, h 40 \(\Omega _e^{-1}\). White and black dashed lines indicate the termination time of the triggering wave