Hayakawa Institute of Seismo Electromagnetics, Co. Ltd. (Hi-SEM), University of Electro-Communications (UEC) Alliance Center, 1-1-1 Kojima-cho, Chofu, Japan;
Advanced Wireless & Communications Research Center, UEC, Chofu, Japan;
VLF/LF; Propagation; Anomaly; Ionospheric; Perturbations; Earthquake; Precursor; Earthquake; Prediction; the; 2016; Kumamoto; Earthquakes; Japanese; VLF/LF; Network; Wave-Hop; Computation; Nighttime; Fluctuation; Method; Atmospheric; Oscillation; Hypothesis;