Synopsis

The 2011 Great East Japan Earthquake sent tremors as far as Tokyo's Shinjuku district, approximately 400 kilometers from the epicenter, where tall buildings swayed noticeably for thirteen minutes. This prolonged motion is believed to have resulted from resonance with the earthquake’s long-period seismic waves. The 2016 Kumamoto earthquakes marked the first recorded instance of a "long-period pulse" in Japan, posing a novel challenge to earthquake preparedness. Beyond investigating these complex