mode structure

Murphy, K., Inglis, A., Sibeck, D., Rae, J., Watt, C., Silveira, M., et al. (2018). Determining the mode, frequency, and azimuthal wave number of ULF waves during a HSS and moderate geomagnetic storm. Journal Of Geophysical Research: Space Physics. http://doi.org/10.1029/2017JA024877 (Original work published May 2018)