Travelling Ionospheric Disturbances Observed During Sudden Stratospheric Warming, Equinox and Solstice Periods with Kharkiv and Millstone Hill Incoherent Scatter Radars

Sergii Panasenko1, Kateryna Aksonova2, Larisa P Goncharenko3, Philip John Erickson3 and Igor F. Domnin1, (1)Institute for Near-Earth Space Research, National Technical University "Kharkiv Polytechnic Institute", Kharkiv, Ukraine, (2)National Technical University "Kharkiv Polytechnic Institute", Kharkiv, Ukraine, (3)MIT Haystack Observatory, Westford, United States