Publications database Home> Scientific research> Publications Search Publication title, number or author Search Publications matching your search query Results 1 to 1 of 1 Observations of Pi2 pulsations by the Wallops HF radar in association with substorm expansion Geophysical Research Letters, 2007 (Ref: 13510) Authors: Gjerloev J.W.Greenwald R.A.Waters C.L.Takahashi K.Sibeck D.Oksavik K.Barnes R.Baker J.Ruohoniemi J.M. Category 1: Peer-reviewed literature This content was last updated 2 weeks ago on 27 October 2026.