TY JOUR TI Variations of ionospheric and geomagnetic field parameters during the June 18, 2013 Bachat earthquake KW earthquake KW ionosphere KW sporadic ionospheric layer KW local magnetic constant JO Solar-Terrestrial Physics AU Belinskaya, A.Y. AU Kovalev, A.A. AU Semakov, N.N. AU Belinskaya, S.I. PY 2021 IS 7 PB INFRA-M Academic Publishing LLC.