7 earthquakes in Yunnan in 10 days expert: people do not need to panic
Zhongxin.com Kunming, April 8 (Chen Jing) 7 earthquakes of magnitude 3 or more occurred in Yunnan from March 27 to April 4, 2017, including magnitude 5 or more. Li Chunguang, spokesman of the earthquake administration of Yunnan province, said in an interview with reporters on the 8th that the occurrence of 2-3 5-magnitude earthquakes every year is the basic earthquake background of Yunnan, which is consistent with the statistical characteristics of historical earthquakes in Yunnan, and people do not need to panic.
At 4 o’clock on april 4, 2017, an earthquake of 3.4 magnitude occurred in ludian county, zhaotong city, yunnan province, with a focal depth of 9 kilometers. At 7:00 on March 30, another 3.6-magnitude earthquake occurred in Ludian county, with a focal depth of 5 kilometre. On March 27, a total of 5 earthquakes occurred in Dali prefecture, Yunnan province, including 1 earthquake above level 5, 2 earthquakes above level 4 and 2 earthquakes above Level 3.
Li Chunguang said that earthquakes are the result of sudden release after the accumulation of earth crust energy. Therefore, the occurrence of earthquakes in a region has certain periodicity. According to the statistics and research of historical earthquakes, since the 7.2 magnitude earthquake occurred in Myanmar (close to the China-Myanmar border) on March 24, 2011, Yunnan has entered the instrument record (since 1900) the fifth active earthquake period. According to statistics, each active period in yunnan will last for about 10 years, which shows that compared with the calm period, the intensity of earthquakes will be greater and the number of times will be more. Yingjiang earthquake of magnitude 6.1 occurred on may 30, 2014, ludian earthquake of magnitude 6.5 occurred on august 3, jinggu earthquake of magnitude 6.6 occurred on october 7, all belong to the performance of active period.
“In fact, Yunnan is at the southern end of China’s north-south seismic belt, and the distribution area of magnitude 5 earthquakes is more than half of that of Yunnan province.” Li Chunguang introduced that the occurrence of an earthquake of magnitude 5 is conducive to the dispersion and release of energy one after another and reduces the probability of large earthquakes due to the concentrated release of energy.
Li Chunguang said that after earthquakes occurred in Ludian, Jinggu, Yingjiang, Cangyuan, Changning, Yunlong and other places in the past few years, great achievements have been made in post-disaster recovery and reconstruction in earthquake-prone areas, most of the dilapidated buildings have been repaired or rebuilt, and people have more and more knowledge about earthquakes. Earthquakes of magnitude 5 are less destructive, so people do not need to panic due to earthquakes of magnitude 4 with a high frequency recently.
Zhongxin.com Kunming, April 8 (Chen Jing) 7 earthquakes of magnitude 3 or more occurred in Yunnan from March 27 to April 4, 2017, including magnitude 5 or more. Li chunguang, spokesman of the earthquake administration of yunnan province, was interviewed by reporters on the 8th.
