Such a banal simulation, however, would belie the reality that the preceding megathrust earthquake—measuring 9.1M on the Richter scale—released the energy equivalent of roughly 45,000 of the “Little Boy” atomic bomb dropped on Hiroshima in 1945.
• Stay away until local officials tell you it is safe.
A tsunami is a series of waves that may continue for hours. If it is not safe for you, it is not safe for them. Watching a tsunami from the beach or cliffs could put you in grave danger.
It was the group’s first return on investment and Sakai meant to deliver.
Despite having lived nearly his entire life in a maritime community in which it was common knowledge that earthquakes precede tsunamis, even when the warnings began to broadcast over the citywide loudspeakers that afternoon, Sakai stayed the course.
It was another seismic event in a land prone to frequent tectonic convulsion, notwithstanding the length and intensity of it.
In his truck bed was a shipment of mollusks from an ocean farming collective he’d helped to establish three years prior.Do not assume that after one wave the danger is over. Staying Safe After a Tsunami If you do nothing else: 1. Register yourself as safe on the Safe and Well website. If evacuated, return only when authorities say it is safe to do so. Continue listening to local news or a NOAA Weather Radio for updated information and instructions. If people around you are injured, practice CHECK, CALL, CARE. In fact, the largest wave may not occur for several hours.Check the scene to be sure it’s safe for you to approach, call for help, and if you are trained, provide first aid to those in need until emergency responders can arrive. Fact Occasionally, tsunamis can form walls of water (known as tsunami bores) but tsunamis normally have the appearance of a fast-rising and fast-receding flood. There may also be more than one series of tsunami waves if a very large earthquake triggers local landslides which in turn trigger additional tsunamis.The Pacific plate is one of many possible tsunamigenic quake sources, and scientists believe the Nankai Trough, another subduction zone much closer to the Japanese coast than the source of 3/11, will produce a similar megaquake and tsunami within the next 30 years.And when the Pacific rears and pitches itself again at Japan, the island nation’s tsunami warning system will sound the alarm having benefitted from vast post-3/11 technological improvements.That last figure includes the singular death of my Japanese grandmother, who died at a rest home for the elderly in the Kesennuma district of Shishiori.Seven years later, “3/11,” as many Japanese people now refer to it, remains only the latest deadly tsunami of more than 60 in the country’s recorded history, and the fourth in what is roughly a thousand-year cycle associated with the subduction of the Pacific tectonic plate beneath Japan.A “tidal wave” is a term used in common folklore to mean the same thing as a tsunami, but is not the same thing.When the tsunami arrived on Friday, March 11, 2011, Masaru Sakai sat idling in traffic, en route to deliver a load of oysters.“I chose to interpret the situation as I wanted,” he told me through an interpreter this May at the traditional Japanese inn he and his wife run on the island of Ōshima.But by the time he saw it in his rearview mirror, it was too late.