(Original title: One article understands the full picture of Changning magnitude 6 earthquake 10 hours after the earthquake)
[Question 1] How big is this earthquake?
At 22:55 on June 17, a magnitude 6.0 earthquake occurred in Changning County, Sichuan , Yibin City, , with a focal depth of 16 kilometers. After official measurement by China Earthquake Network, aftershocks occurred in Changning County and surrounding counties and cities. At 01:15 on June 18, a magnitude 2.9 earthquake occurred in , Gong County, with a depth of 9 kilometers. At this point, 140 minutes after the magnitude 6.0 earthquake in Changning County, Yibin, 11 earthquakes occurred in the local and surrounding counties and cities, of which 4 were magnitude 4.0 or above.
Beijing News reporter learned from the Sichuan Provincial Earthquake Bureau that as of 00:40 on the 18th, 6 earthquakes of magnitude M3.0 or above have occurred, including 3 magnitude M3.0-3.9 magnitude M4.0-4.9 magnitude M5.0-5.9 magnitude M5.0-5.9 magnitude M5.0-5.9 magnitude M5.0-5.9 magnitude M. The earthquake dynamics are still under continuous monitoring. The epicenter of this earthquake is located in Shuanghe Town, Changning, , , located in southern Sichuan, tectonicly, within a relatively stable South China block (Yangzi Quasi-platform). There are no large-scale regional activity faults on the surface within 100 kilometers of the earthquake area.
This earthquake has been significantly affected by many earthquakes in Sichuan and Chongqing. Ms. Chen, who lives in Chengdu City, told the Beijing News reporter that this time she felt that the furniture was shaking a lot, lasting for more than 20 seconds, and her cousin's house in Chongqing also felt a very strong tremor. This is an earthquake with a strong tremor in the past 10 years since he lived in Changning County. Xu, a student from Sichuan University, said that this earthquake was the strongest tremor in his three years of studying for graduate school in Chengdu. In addition, netizens from Yunnan, Guizhou and other places also posted on Weibo saying that they felt shocked in the local area.
The epicenter of this earthquake is 22 kilometers away from Gong County, 27 kilometers away from Changning County, 333 kilometers away from Xingwen County, 339 kilometers away from Gaoxian County, 343 kilometers away from Yunlian County, 52 kilometers away from Yibin City, 261 kilometers away from Chengdu City, and 211 kilometers away from Chongqing City.
[Question 2] How many casualties caused by this earthquake?
According to CCTV News, the reporter learned from the Yibin Emergency Management Bureau that as of 5:20 on the 18th, a magnitude 6.0 earthquake in Changning, Sichuan had 11 deaths (8 people in Changning and 3 people in Gong County), and 122 people were injured: 48 people in Changning (37 people in Shuanghe Town, 34 people in Changning Town, 1 person in Zhuhai Town, 33 people in Meidong Town, 32 people in Dongdi Town, 31 people in Guhe Town), of which 5 people were critically injured, 16 people seriously injured, and 27 people were slightly injured; 71 people in Gong County (including 65 people in Xunchang Town and 2 people seriously injured, 34 people in Gongquan Town, 32 people in Didong Town); 3 people in Gao County (2 people in Shahe Town, 1 person in Laifu Town). Changning was trapped 14 people, 13 people were rescued (6 people have died), and 1 person is being rescued, and there is no life-threatening. After the earthquake of
, Sichuan Provincial Emergency Management Department and Sichuan Provincial Fire Rescue Corps launched a Level 2 emergency response mechanism. The Sichuan Provincial Fire Brigade learned that the command center of the corps and 6 detachments dispatched a total of 63 vehicles, 302 people and 6 dogs to the epicenter.
Sichuan Yibin City Fire Rescue Detachment 13 fire trucks and 63 firefighters are rushing to the epicenter to rescue. At 0:10 on the 18th, 114 officers and fighters of Chengdu Fire Fighters, 25 fire trucks and four rescue dogs, received the reinforcement order and completed the assembly and set off for Yibin. Meishan City Fire Rescue Detachment gathered 43 people and 5 vehicles from the urban special service squadron, Baipo Road and Pengshou Road squadron to prepare for rescue. Leshan City Fire Rescue Detachment announced that at 23:55 on the 17th, the heavy earthquake rescue team of Leshan City Fire Rescue Detachment rushed to the Changning earthquake-stricken area of Yibin.
The Ministry of Emergency Management immediately launched an emergency response. The Ministry of Emergency Management organized a working group to rush to the earthquake zone overnight to guide local rescue and disaster relief work. In conjunction with the National Food and Material Reserve Bureau, it urgently allocated 5,000 tents, 10,000 folding beds, and 20,000 quilts to support earthquake relief work. The full-time headquarters of the Sichuan Provincial Fire Rescue Corps and the surrounding 6 fire rescue detachments dispatched 63 fire trucks and 302 fire commanders and fighters to the scene to carry out comprehensive investigation and rescue work.
Sichuan Provincial Party Secretary Peng Qinghua immediately issued an instruction, requiring relevant departments of the provincial party committee and Yibin City to quickly launch emergency plans, organize forces to rush to the earthquake zone to understand the disaster situation, make every effort to treat the injured, properly transfer and resettle the affected people, organize disaster prevention and risk avoidance in a timely manner, and ensure the smooth flow of electricity, communications, roads, etc. We must strengthen public opinion control and ensure social stability in the disaster area.
[Question 3] How is the disaster situation?
html At 23:40 on June 17, the reporter learned from the Sichuan Provincial Water Resources Department that after preliminary verification, there are no large and medium-sized reservoirs distributed near Changning County, Yibin City, and there are currently no reports of damage to the reservoir. The mayor of Meidong Town in the earthquake zone told the Beijing News reporter that some houses were damaged and the mountain collapsed, and there is now a power outage and communication is not smooth. A local hotel collapsed locally, causing minor injuries to the owner. He has been sent to the hospital for treatment. Some houses have been damaged. Some have set up tents in the square to rest, and some have returned home.At 0:40 on June 18, the starting station was Panzhihua and the terminal station was Chengdu South, a passenger on the T8870 train told the Beijing News reporter that the train was temporarily stopped near Puge County due to the Changning earthquake. The re-departure time is unknown. The flight attendant is currently comforting the passengers.
Image source Sichuan Provincial People's Government News Office official Weibo
[Question 4] Is there a possibility of greater aftershocks?
According to the official Weibo of the Information Office of the Sichuan Provincial People's Government, at 00:40 on June 18, the Sichuan Provincial Earthquake Bureau held a press conference on the 6.0-magnitude earthquake in Changning. The reporter learned at the ventilator that regarding the news that "a greater earthquake is expected to occur at 3:12 am on June 18, and the earthquake magnitude is expected to be 7.6 magnitude", Du Fang, director of the Sichuan Provincial Earthquake Forecast Research Center, said in response to reporters' questions that the earthquake location is in a relatively stable South China block and there is no possibility of greater aftershocks.
[Question 5] How capable is earthquake warning system ?
Many netizens said that they received earthquake warning information in advance. Chengdu Hi-Tech Disaster Reduction Research Institute said that the mainland earthquake warning network jointly built by Chengdu Hi-Tech Disaster Reduction Institute and emergency management departments (including the former municipal and county earthquake departments) successfully warned of the earthquake. Some people in Yibin and Chengdu near the epicenter issued warning prompts for TVs, mobile phones, dedicated earthquake warning terminals, etc. Warn to Yibin City 10 seconds in advance and to Chengdu City 61 seconds in advance.
Sichang Junbo Foreign Language School in Xichang, Sichuan received a warning 60 seconds in advance, and more than 4,000 teachers and students were successfully evacuated outdoors. The head of the school's political and educational department said that when he was bedtime, he heard an alarm sound, and then all the teachers and students in the school quickly evacuated to a safe place, and no one was injured.
, director of Chengdu Hi-Tech Disaster Reduction Research Institute , Wang Hung , said that when an earthquake occurs, the earthquake early warning system uses the principle that radio waves propagate faster than seismic waves. Before the earthquake causes damage, it will issue a fully automatic second-level earthquake early warning alarm to users a few seconds to dozens of seconds in advance. At present, China's earthquake early warning technology has reached the world's advanced level.
"Don't underestimate the time between these few seconds and dozens of seconds," Wang said. Research shows that when the warning time is 3 seconds, it can reduce casualties by 14%, when the time is 10 seconds, it can reduce casualties by 39%, and when the time is 20 seconds, it can reduce casualties by 63%.
