The world's largest earthquake around M10
Tohoku University expert has put together the results of the analysis of the largest earthquakes that may occur in the world, from the size and topography of the earth, that can be considered a maximum size of around magnitude 10.
At a meeting of experts was held in Tokyo earthquake on June 21, the result of this analysis, Professor of Tohoku University Graduate School of Nobu Matsuzawa reported.
We have been the size of the earthquake, according to it, from such as the length of the plate boundary fault that can cause massive earthquake and the size of the earth, it is believed that it is up to around magnitude 10.
10 is greater than the magnitude 9.5 magnitude earthquake that occurred off the coast of Chile in 1960 amid the world's largest on a scale of 32 times the massive earthquake in March last year, has been known until now.
For example, and the Kamchatka Peninsula from North America, I have to be a fault of magnitude 10 8800 km south of Japan along the trench between shift work and 20 m.
Professor Matsuzawa pointed out that these earthquakes occur, and it is conceivable that continued for many days to come before the tsunami lasted 1 hour 20 minutes to the length of the shaking, the shaking subsided.
Magnitude 9 so happened I thought that only happens to magnitude 8 class does not mean that I think absolutely, "Richter 10 Sonouede will happen. By the Great East Japan Earthquake, if there is a possibility even slightly, does it mean that I happen I said, "it is necessary to know in advance how.
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The 10-kilometer object produces an explosion of 6 × 107 megatons of TNT (equivalent to an earthquake of magnitude 12.4 on the Richter scale).
The 1-kilometer object produces a milder explosion of "only" 6 × 104 megatons (equivalent to an earthquake of magnitude 9.4 on the Richter scale).