TY JOUR TI Features of artificial ionosphere turbulence induced by the O- and X-mode HF heating near the F2-layer critical frequency KW high-latitude ionosphere KW F-region KW powerful HF radio wave KW electric field KW electron density enhancement KW Langmuir wave KW ion-acoustic wave KW incoherent scatter radar KW EISCAT JO Solnechno-Zemnaya Fizika AU Borisova, T.D. AU Blagoveshchenskaya, N.F. AU Kalishin, A.S. PY 2023 IS 9 PB INFRA-M Academic Publishing LLC.