On January 12, a 5.0 magnitude earthquake struck the South Yellow Sea. This is the third magnitude 5 earthquake in 2011. On the day of New Year's Day, a magnitude 5.1 earthquake occurred in Wuqia County, Xinjiang, in the Kizilskul Kirby Autonomous Prefecture. On the 8th, a magnitude 5.6 earthquake struck Hunchun City, Yanbian, Jilin Province. Sun Shiyi analyzed that after the Yushu earthquake on April 14 last year, seismic activity in China was relatively unnatural. This is mainly manifested in the fact that there are always 5 or so earthquakes in our country. This is an abnormal situation. Sun Shizhen pointed out that there is a proportional relationship between magnitude earthquakes. After a major earthquake, it should be accompanied by three to four magnitude 6 earthquakes and about 10 magnitude 5 earthquakes. Sun Shiyi said that after the Yushu earthquake, China’s medium-intensity earthquakes are not normal in intensity distribution. The earthquakes that appeared after 2011 are still about level 5, and the magnitude is still at this level. "The level is abnormal, which means that at least the earthquake situation is severe, and the earth is still in an abnormal state of activity." Sun Shizhen said. According to his analysis, since the 2008 Wenchuan earthquake in China, China is still in a period of relatively active seismic activity. During this phase, the seismic activity is not normal. In the next few years, we must pay attention to the danger of a magnitude 7 or so earthquake.
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