According to the measurement of Taiyuan Seismological Network, an earthquake of M2.4 occurred at 8: 02 Beijing time on July 30, 2065 in Feng Meng-Wangda area of Qingxu County, Taiyuan City, Shanxi Province (37.57 degrees north latitude, 0/12.40 degrees east longitude) with a focal depth of 8 kilometers.
introduce
Shanxi seismic belt;
Wei Fen earthquake zone. It starts from Xuanhua-Huai 'an Basin and Huailai-Yanqing Basin in Hebei Province in the north and passes Yangyuan Basin in the south.
Earth, Yuxian Basin, Datong Basin, Lingqiu Basin, Taiyuan Basin, Linfen Basin, Yuncheng Basin to Weihe Basin. It is another strong seismic activity zone in eastern China. Shanxi 1303 Hongdong M8.0 earthquake and Shaanxi 1556 hua county M8.0 earthquake both occurred in this area. June1998+1October 65438 Zhangbei M 6.2 earthquake is also near this zone. Since recorded, there have been about 160 earthquakes of magnitude 4.7 or above in this seismic zone. Among them, the earthquake was 7-7.9; There were 2 earthquakes of magnitude 8 or above.
[Edit this paragraph] Analysis and judgment
Sun Shizhen, a researcher at China Seismological Network Center, said that there have been many strong earthquakes in Shanxi seismic belt in history, but it has been in a relatively low active state. The understanding of Shanxi seismic belt is mainly studied through the activity characteristics of earthquakes in North China. According to the historical data of more than 600 years, the seismic activity in North China shows two active periods: the first active period is 148 1 ~ 1730, which lasted for 250 years. This active period has a climax, that is, from 1668 to 1695. During these 27 years, there have been four earthquakes of magnitude 7 or above in North China, the largest of which was 1668 in Tancheng, Shandong Province, and the other was the Sanhe Pinggu earthquake of magnitude 8.5 (1679). The other two earthquakes occurred in Shanxi Province, and the other one was 1683. In the first active period of North China, the activity level of Shanxi seismic belt was very strong. However, after the first active period was calm, there was no earthquake of magnitude 6 or above in North China for more than 80 years, and it was in a relatively calm state.
Sun Shizhen said that since then, there has been a second active period, which has exceeded 190 years. There is also a climax in the second active period, that is, 1966 Xingtai earthquake to 1976 Tangshan earthquake. In this process, four earthquakes with magnitude above 7 occurred. In the second active period, the activity level of Shanxi seismic belt is relatively weak. Judging from the current analysis, the second active period has not completely ended, and it may be in the late stage of an active state.
[Edit this paragraph] Conclusion
From this background, it is unlikely that an earthquake of magnitude 7 or above will occur in Shanxi seismic belt in the next few years. No matter what the situation is now, from the background, the Shanxi seismic belt is relatively low, and it is unlikely that a major destructive earthquake will occur in the next few years.