Documents A ． Saito 1,2 , M.C. Kelley 1 , T. Tsugawa 2 , J.J. Makela 1 , Y. Otsuka 3 , and S. Miyazaki 4

Seasonal dependence of the nighttime traveling ionospheric disturbances in the mid-latitude ionosphere A．Saito1,2, M.C. Kelley1, T. Tsugawa2, J.J. Makela1, Y. Otsuka3,…