wave steepening

Agapitov, O., Drake, J., Vasko, I., Mozer, F., Artemyev, A., Krasnoselskikh, V., et al. (2018). Nonlinear Electrostatic Steepening of Whistler Waves: The Guiding Factors and Dynamics in Inhomogeneous Systems. Geophysical Research Letters. http://doi.org/10.1002/2017GL076957 (Original work published March 2018)