The country lies on the circum-Pacific Ring of Fire where Earth’s largest and fastest-moving tectonic plate (the Pacific Plate) is subducting at a rate of several centimeters per year beneath several other plates along deep trenches.
The country lies on the circum-Pacific Ring of Fire where Earth’s largest and fastest-moving tectonic plate (the Pacific Plate) is subducting at a rate of several centimeters per year beneath several other plates along deep trenches.Tags: Marketing Strategies Business PlanFreedom In America EssayStanislavski And Brecht EssayPpt On Essay WritingI Need Help With My High School EssayOn Writing The College Application EssayCollege Essay S 2010
Tsunami waves also swept across the Pacific, causing damage or disruptions in Hawaii, California, Oregon, Washington and British Columbia.
Casualties from the earthquake and tsunami in Japan may be 30,000.
Its epicenter was 130 kilometers off Sendai, Honshu; it occurred at a relatively shallow depth of 32 kilometers.
The temblor violently shook northeast Honshu for six minutes, and collapsed its coastline by one meter.
Nevertheless, the March earthquake was unusual in two ways: First, it was the country’s largest recorded quake and the fourth-largest in the world since 1935 when the Richter scale was introduced.
Second, it complicated the picture for how we forecast the main shock of a large earthquake.History will record this event as among the world’s worst natural disasters, but geoscience textbooks will discuss it because of certain rare characteristics.Words like tsunami, kazan (volcano), danso (fault), jishin (earthquake) and typhoon (hurricane) are basic vocabulary in Japan.Hundreds of aftershocks, dozens of magnitude 6.0 or greater and two of magnitude 7.0 or greater, followed in the days and weeks after the main quake.(Nearly two years later, on December 7, 2012, a magnitude-7.3 tremor originated from the same plate boundary region.Damaging tsunami waves struck the coasts of Hitachinaka in Ibaraki.As the floodwaters retreated back to the sea, they carried with them enormous quantities of debris, as well as thousands of victims caught in the deluge.As we have seen, it is indeed difficult to define any earth tremor as the main quake until after the whole sequence of earth shocks has occurred.Furthermore, despite advances in our knowledge of how and where earthquakes happen, our capability to predict exactly where and when the next earthquake will hit is in its infancy.It also produced a maximum 60-centimeter-high tsunami, which struck the coast half an hour after the quake. Given the earthquake’s large magnitude and the smaller aftershocks that occurred as expected over the next day, no one thought that these could be foreshocks of an even larger event.But it now looks like those quakes were all foreshocks for the magnitude-9.0 quake that hit two days later, just 40 kilometers north of the magnitude-7.2 event.