Warnings From the Ionosphere
On March 11, 2011, a powerful earthquake shook Japan. Pressure had built along a deep ocean trench off the northeast coast, and then the fault ruptured. The quake began below the seafloor, 43 miles east of the Tohoku Region, jolting part of the seafloor upwards by 30 feet. The force of the temblor thrust Honshu—Japan’s […]