A 7.3 magnitude earthquake in Japan is suspected to produce 311 aftershocks by Lu experts: 10 years is not long indeed | Global | NOWnews Today News

A strong earthquake measuring 7.3 on the Richter scale occurred in the sea off Fukushima, Japan, on the night of the 13th, injuring at least 155 people. Some sections of the highway collapsed. As a result, some Shinkansen routes were suspended. Aftershocks of magnitude 5.2 and 4.3 were successively produced. The Japan Meteorological Agency has determined that this earthquake should be the replica of the Great East Japan Earthquake in 2011. Experts from China and Japan have analyzed this. Gao Jianguo, a researcher at the China Earthquake Management Institute of Geology, noted that large earthquakes often have aftershocks, which can last 10 years, but not too long, some can even last for decades.

According to full ground media reports, Gao Jianguo believes that the earthquake occurred at the junction of the Pacific plate and the Philippine plate that sank. It would have been easy to accumulate energy, although compared to the Great East Japan Earthquake 311 10 years ago, it is 2 magnitudes. There is still a big difference, but the location of this earthquake is similar to that of the main shock 10 years ago, indicating that there was still some energy on this plate that had not been released at that time. 10 years of accumulation, the accumulated energy was released again. Gao Jianguo further noted that some major earthquakes often have aftershocks. Ten years is not long, and some will last for decades. For example, a magnitude 6.8 earthquake occurred in Xingtai, Hebei, China, in 1966, and another magnitude 6 aftershock occurred in 1982. The difference is 16 years. Take the famous Tangshan earthquake as an example: “The Tangshan earthquake occurred in 1976. Until last year, there were aftershocks that lasted for several decades.” As for how to prove that this earthquake was an aftershock of 311, Gao Jianguo said that many of the characteristics of this earthquake are the same as those of the 311, and based on the “3 elements” of the earthquake, that is, the time, magnitude and location of the earthquake, it is judged that there is a causal relationship between the aftershock and the main shock. Although this earthquake caused far fewer disasters than the 311 earthquake and did not trigger a tsunami crisis, as the Japan Meteorological Agency, Gao Jianguo also recalled that the possibility of aftershocks still exists in the coming days, and the scale does not rule out that it will reach 5 Up to level 6, the public must remain alert to avoid unnecessary victims.

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