Publications [#322881] of Steven A. Cummer

Papers Published

1. Kolmasova, I; Santolik, O; Farges, T; Cummer, S; Lan, R; Uhlir, L, Propagation of preliminary breakdown pulses preceding cloud-to-ground lightning discharges, 2015 1st Ursi Atlantic Radio Science Conference, Ursi at Rasc 2015 (October, 2015), IEEE, ISBN 9789090086286 [doi]
   (last updated on 2023/06/01)

   Abstract:
   A sequence of electromagnetic pulses lasting from a few milliseconds to several tens of milliseconds is usually observed prior to the first return stroke of a cloud-to-ground lightning flash. The sequence is composed of three parts. It begins with a group of relatively large bipolar pulses which are believed to be connected with preliminary breakdown processes. They are usually followed by a relatively low and irregular pulse activity. The sequence ends with a train of smaller and faster pulses attributed to the stepped leader.