News Source
EXCERPT:
On Monday, at 4:53 P.M. local time, a magnitude 7.7 earthquake struck off the northeastern shores of Japan’s largest island, Honshu, where the Pacific tectonic plate plunges beneath the North American plate at the deep-sea Japan Trench. Immediately, the Japan Meteorological Agency (JMA) sent out a tsunami warning alert. Although small tsunami waves did soon reach various sections of the coast, no reports of injuries, deaths, or significant damage to homes or infrastructure were reported.
The danger, however, has not necessarily passed. Following the temblor, a JMA spokesperson told the media and those along the affected shoreline that “the likelihood of a new, huge earthquake occurring is relatively higher than during normal times.” Specifically, there is an elevated risk of a “megaquake”—one of magnitude 8.0 or greater—in the coming days.
The odds of an imminent megaquake are very low—around one in 100. “This 1 percent probability is still low in absolute terms, but it’s 10 times higher than normal, which is significant from a risk management perspective,” says Amilcar Carrera-Cevallos, an independent earthquake scientist.