About TSUKADA SHIN'YA
About ODAKA TOSHIKAZU
About ASHIYA KIMITOSHI
About OTAKE KAZUO
About 気象庁
About NOZAKA DAISUKE
About 気象庁
About large earthquake
About disaster prevention countermeasure
About Seismology in general
About Seismic wave propagation
About Natural disasters
About P波
About エンベロープ
About 早期
About 地震
About 推定法