TY JOUR TI Ionospheric longitudinal variability in the Northern Hemisphere during magnetic storms in March 2012 from ionosonde and GPS/GLONASS data KW chain of GPS/GLONASS receivers KW ionosonde chain KW ionospheric and thermospheric disturbances KW geomagnetic field variations KW geomagnetic storm JO Solnechno-Zemnaya Fizika AU Chernigovskaya, M.A. AU Yasyukevich, A.S. AU Khabituev, D.S. PY 2023 IS 9 PB INFRA-M Academic Publishing LLC.