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Many earthquakes occurred in Yunnan and Qinghai

via:驱动之家     time:2021/5/22 8:51:18     readed:330

On the evening of May 21,Yangbi, Dali, Yunnan Province, was hit by several earthquakes with a magnitude of 2.8 to 6.4. Another earthquake with a magnitude of 7.4 struck Maduo County, Guoluo Tibetan Autonomous Prefecture, Qinghai Province in the early hours of the 22nd.

Sun Shizhen, a researcher of China Seismic Network Center, said in an interview that the earthquakes in these two places are related to the recent active Indian plate.

In recent years, the activity of Indian plate has obviously increased, so it will affect China and make the seismic activity in the western region rise obviously.

According to experts' analysis, the casualties of the two earthquakes are not too serious. The magnitude of the earthquake in Yunnan is medium, and the corresponding crack of the 6.4 earthquake is about 7 to 8 degrees. Because the source is relatively shallow, the crack may reach 8 degrees, but it is relatively far away from the County and other towns.

Although the magnitude 7.4 earthquake in Qinghai is 30 times higher than that in Yunnan in terms of energy, the intensity is a big earthquake.

But because it's in a sparsely populated area,Moreover, when the focal depth reaches 17 km, the deeper the depth is, the crack of the epicenter will be relatively weakened, but the influence range will be larger, and the crack is expected to reach 9 degrees.

In general, the disaster losses caused by these two earthquakes are weaker than those caused by other earthquakes of the same level.

It is understood that since May 18, 2021, an earthquake with magnitude 4 has been active in the vicinity of Yangbi area, Yunnan Province, with successive earthquakes of magnitude 4.2 on May 18 and 4.4 on May 19.

At 20:56 on May 21, after the earthquake of magnitude 4.2 occurred in this area, the seismicity level rapidly upgraded, followed by the earthquakes of magnitude 5.6 at 21:21 and 6.4 at 21:48, followed by several aftershocks of magnitude 4 and 5, and the aftershocks of earthquake sequence were relatively abundant.

云南、青海发生多次地震

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Reprint please indicate the source: fast technology

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