TY JOUR TI Peculiarities of 630.0 and 557.7 nm emissions in the main ionospheric trough: March 17, 2015 KW second step of the magnetic storm main phase KW 557.7 and 630.0 nm emissions KW main ionospheric trough KW polarization jet JO Solar-Terrestrial Physics AU Zolotukhina, N.A. AU Polekh, N.M. AU Mikhalev, A.V. AU Beletsky, A.B. AU Podlesny, S.V. PY 2021 IS 7 PB INFRA-M Academic Publishing LLC.