Lightning origination and thunderstorm ground enhancements terminated by the lightning flash A. Chilingarian, G. Hovsepyan, G. Khanikyanc, A. Reymers and S. Soghomonyan EPL, 110 4 (2015) 49001 Published online: 12 June 2015 DOI: 10.1209/0295-5075/110/49001