poloidal and toroidal mode

Hao, Y., Zong, Q. -G., Wang, Y., Zhou, X. -Z., Zhang, H., Fu, S. . Y., et al. (2014). Interactions of energetic electrons with ULF waves triggered by interplanetary shock: Van Allen Probes observations in the magnetotail. Journal Of Geophysical Research: Space Physics. http://doi.org/10.1002/2014JA020023 (Original work published October 2014)