National earthquake statistics in 2019: 19 dead, 427 wounded, Changning 6-magnitude earthquake the most serious

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 National earthquake statistics in 2019: 19 dead, 427 wounded, Changning 6-magnitude earthquake the most serious


Just after new years day, the national seismological network recently checked the 2019 earthquake activity and found that last years earthquake disaster caused 19 deaths and 427 injuries in China. Among them, 13 earthquake disasters occurred in mainland China, resulting in 17 deaths and 411 injuries, with a direct economic loss of about 5.9 billion yuan. The most serious earthquake was the Changning 6.0 earthquake in Sichuan, and the largest earthquake was the Motuo 6.3 earthquake in Tibet. Two people died and 16 people were injured in Taiwan. In 2019, seven provinces in the mainland of China were affected by the disaster, but the personnel and economic losses were mainly concentrated in Sichuan Province. In Sichuan Province, the death rate is about 94%, the injury rate is about 97%, and the economic loss rate is about 99%.

In 2019, the earthquake disaster caused 19 deaths and 427 injuries in China. Among them, 13 earthquake disasters occurred in the mainland of China, resulting in 17 deaths and 411 injuries, with a direct economic loss of about 5.9 billion yuan. The most serious earthquake was the Changning 6.0 earthquake in Sichuan Province, and the largest earthquake was the Motuo 6.3 earthquake in Tibet, with no casualties or economic losses. Two people were killed and 16 injured in Taiwan.

Chinas continent is squeezed by the collision of the India Australia plate to the northeast, and also by the subduction of the Pacific plate to the northwest. The collision and compression of the India Australia plate in the direction of the north-east strongly led to the direct and violent uplift of the western part of Chinas continent, forming the roof of the world - Qinghai Tibet Plateau, accompanied by strong seismic activities. The spatial distribution of earthquakes is triangular, which we call the big triangle area of strong seismic activities in the western part of China and its adjacent areas. Due to the subduction of the Pacific plate, the seismicity in the east of China is also strong.

In 2019, 20 earthquakes with m u2265 5 occurred in the mainland of China, which is lower than the average of 24 earthquakes per year, but higher than the average of 2017-2018. The mt6.3 earthquake in Tibet on April 24, 2019 broke the 522 day calm of earthquakes with m u2265 6 in mainland China.

There are three characteristics of the earthquake disaster in 2019 in China: first, the earthquake disaster in the mainland of China is low, no major earthquake disaster event occurred in the mainland of China in 2019, and the degree of earthquake disaster is obviously low compared with the previous years; second, the distribution of earthquake disaster is concentrated, in 2019, there are seven provinces in the mainland of China, but the personnel and economic losses are mainly concentrated in Sichuan Province; third, the earthquake disaster in Taiwan region The damage is not high. In 2019, there were 10 earthquakes with m u2265 5 in Taiwan, including 2 earthquakes with m u2265 6. The largest earthquake was the earthquake with m u2265 6.7 in the sea area of Hualian County, Taiwan, causing 1 death and 16 injuries, which is less serious than the previous earthquake disaster.

According to the situation of each province in China, there are 10 earthquakes with m u2265 5 in Taiwan and offshore, including 2 earthquakes with m u2265 6, with the maximum intensity of M u2265 6.7, ranking first in the number and intensity of provinces in China. In the mainland, Tibet has two earthquakes of M 5 and M 6, with the highest intensity; Sichuan has seven earthquakes of M 5 and M 6, with the highest frequency and the second intensity; Xinjiang has three earthquakes of M 5, with the maximum of M 5.2 in Tacheng, Xinjiang on February 2, with the same frequency as Tibet; Gansu has two earthquakes of M 5, with the maximum of M 5.7 in Xiahe, Gansu on October 28; Guangxi has two earthquakes of M 5 and M 6 The magnitude 5.2 earthquake ranks first in the eastern provinces of the mainland in terms of its frequency and intensity.

In 2019, seven provinces in the mainland of China were affected by the disaster, but the personnel and economic losses were mainly concentrated in Sichuan Province. In Sichuan Province, the death rate is about 94%, the injury rate is about 97%, and the economic loss rate is about 99%.

In 2019, 8 earthquakes with m u2265 5 occurred in Sichuan, including 1 earthquake with m u2265 6.0 on June 17, Changning earthquake with m u2265 6.0. Compared with 2018, the number of earthquakes has increased significantly, and the intensity of earthquakes has increased. Since the Xingwen earthquake with m S5.7 on December 16, 2018, the earthquakes with m u2265 5 in the basin of Southeast Sichuan have been continuously active. In 2019, eight earthquakes with m u2265 5 occurred in Sichuan are all located in Southeast Sichuan. Among them, the 6.0 earthquake sequence of Changning from June to July 2019 includes 5 earthquakes with m u2265 5, and 2 earthquakes with m u2265 5 occurred in Weiyuan and Zizhong in the north, which are the 5.4 and 5.2 earthquakes in Zizhong on September 8 and December 18, respectively.

In addition, in 2019, record breaking earthquakes occurred in some regions with weak seismic activity in the mainland of China, such as the Sanya 4.2 earthquake in Hainan Province on August 20 and the Yanhe 4.9 earthquake in Guizhou Province on October 2. In Guangxi, there are two earthquakes with m u2265 5.the number of earthquakes is significantly higher than the annual average of 0.1 (once every 10 years).

China is one of the most serious countries in the world. Statistics in the 20th century show that Chinas mainland population accounts for 1 / 4 of the worlds, but the number of mainland earthquakes accounts for 1 / 3 of the worlds, and the number of deaths caused by earthquakes accounts for 1 / 2 of the worlds. Statistics from 2000 to 2019 show that the death toll caused by earthquakes in Chinas mainland accounts for only 12% of the global total.

(function() {(window. Slotbydup = window. Slotbydup| []). Push ({ID: u5811557, container: ssp_, async: true});}) ()); source: beiqing.com - Beijing Youth Daily responsible editor: Li Chao