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 Solar-Terrestrial Physics AU Черниговская, М.А. AU Ясюкевич, А.С. AU Хабитуев, Д.С. PY 2023 IS 9 PB Институт солнечно-земной физики СО РАН