TY JOUR TI Features of Earth’s lower ionosphere during solar eclipse and sunset and sunrise hours according to measurements by the API method near Nizhny Novgorod KW ionosphere KW plasma KW neutral atmosphere KW solar eclipse KW sunrise KW sunset KW high-frequency heating KW artificial periodic irregularities KW temperature KW vertical velocity KW turbulence KW internal gravity waves KW SURA facility JO Solnechno-Zemnaya Fizika AU Bahmetieva, N.V. AU Grigoriev, G.I. AU Zhemyakov, I.N. AU Kalinina, E.E. AU Lisov, A.A. PY 2024 IS 10 PB INFRA-M Academic Publishing LLC.