“According to Italy’s National Institute of Geophysics and Volcanology, the earthquake’s enormous strength shifted the Earth’s axis by 25 centimeters (9.8 in). This deviation led a number of small changes, including those to the length of a day and the tilt of the Earth. The speed of the Earth’s rotation increased, shortening the day by 1.6 microseconds due to the redistribution of Earth’s mass.
A report by the U.S. Geological Survey said that Honshu, the main island of Japan, was shifted 2.4 m (7.9 ft) toward the east. Researcher Lucy Jones said of the precise data, “The Japanese have the best seismic information in the world… This is overwhelmingly the best-recorded great earthquake ever.”
This earthquake released a surface energy (Me) of 1.9±0.5×1017 joules, dissipated as shaking and tsunami energy, which is nearly double that of the Sumatran earthquake in 2004 which killed 230,000 people. However, the total energy released (Mw), the USGS WPhase Moment Solution, recorded 3.9×1022 joules, slightly less than the 2004 Sumatra quake. The total energy released underground was some 205,000 times that on the surface. The total energy released was equivalent to about 9.32 teratons of TNT, approximately 600 million times that of the Hiroshima bomb, or about 80 years of global energy usage, estimated to be 4.74×1020 joules for the year of 2008″
turbid dahlia: “"Don't hang around by the river, filming."”
symbioid: “But then, you see it coming. Slow at first, then unceasing, then it overtakes and swallows up the vehicles, and it's terrifying.”
There is something alluring about when a mystery tide goes out.
It was the most powerful known earthquake ever to have hit Japan, and the fifth most powerful earthquake in the world since modern record-keeping began in 1900. The earthquake triggered powerful tsunami waves that reached heights of up to 40.5 metres (133 ft) in Miyako in Tōhoku's Iwate Prefecture, and which, in the Sendai area, travelled up to 10 km (6 mi) inland. The earthquake moved Honshu (the main island of Japan) 2.4 m (8 ft) east and shifted the Earth on its axis by estimates of between 10 cm (4 in) and 25 cm (10 in).
On 12 September 2012, a Japanese National Police Agency report confirmed 15,883 deaths, 6,145 injured, and 2,667 people missing across twenty prefectures, as well as 129,225 buildings totally collapsed, with a further 254,204 buildings 'half collapsed', and another 691,766 buildings partially damaged.
KokuRyu: “The "2600" number I think refers to the people declared missing after the tsunami, who have now been declared "dead." Including these folks, the total number of dead from the tsunami (apart from the earthquake) is something like 20,000.”
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