Motivation: 'Strange' long pulses (100 sec) on EW or NS rarely observed during ... them to be due to cracking microscopic particles beneath the seismometer feet. ...
Diurnal and seasonal variations of the electron density over Irkutsk during the ... 126a, P.O.Box 291, Irkutsk, Russia. E-mail: ratovsky@iszf.irk.ru ...