Engebretson, M. J., J. L. Posch, J. R. Wygant, C. A. Kletzing, M. Lessard, R. B. Horne, G. D. Reeves, M. Gkioulidou, J. Fennell, K. Oksavik, T. Raita, Van Allen Probes, NOAA, and Ground Observations of an Intense Pc 1 Wave Event Extending 12 Hours in MLT, AGU Fall meeting 15-19 Dec, San Francisco, USA, 2014