2022 Ya'an earthquake
Reverse fault[1] | |
Areas affected | Sichuan |
---|---|
Max. intensity | CSIS VIII[2] |
Casualties | 4 dead, 42 injured |
On June 1, 2022, a moment magnitude (Mw ) 5.8 or surface-wave magnitude (Ms ) 6.1 earthquake struck Lushan County in Ya'an, Sichuan Province, China.[1] At least four people were killed and 42 were injured.[3] The earthquake had a maximum intensity of VIII on the China seismic intensity scale, causing damage to many homes and triggering rockslides.
Tectonic setting
The active
Earthquake
The earthquake occurred at 17:00 local time. It had a moment magnitude of 5.8 and occurred at a depth of 12 km (7.5 mi), according to the United States Geological Survey (USGS). The China Earthquake Networks Center (CENC) measured the earthquake at a surface-wave magnitude (Ms ) of 6.1 at a depth of 17 km (11 mi).[6] A smaller magnitude 4.5 (mb 5.3[7]) earthquake occurred three minutes later.[8] The Sichuan Earthquake Administration said that this event was an aftershock of the magnitude 7.0 earthquake that occurred in April 2013, which killed nearly 200 people.[9] Another earthquake, with a magnitude of 4.9, occurred nearby in May, damaging 468 houses.[10][11][12][13]
Both earthquakes occurred on the Shuangshi-Dachuan Fault. The epicenter, according to earthquake experts from China, was located 2 km from the fault. The Shuangshi-Dachuan Fault is part of the larger Longmenshan Fault structure, which forms the eastern boundary of the Bayan Har block. A focal mechanism analysis suggest the 2022 earthquake occurred due to thrust faulting.[14] Experts from the CENC said it is unlikely that this earthquake would be a foreshock to a larger event.[15]
Impact
A preliminary survey of the affected area determined that 135 homes in Ya'an and 4,374 in Lushan were damaged.[16] Some parked vehicles in Baoxing County were crushed by falling boulders. Some nearby buildings and five hydropower stations were also damaged.[17][18] In Taiping, damage was minimal; most buildings only suffered cracked or partially collapsed walls. Many houses were reconstructed to seismic codes after the 2008 and 2013 earthquakes.[19] Video footage showed damaged buildings and debris on streets and large boulders blocking roads in the mountainous area.[20] At least three county roads and China National Highway 351 were damaged by rockfalls.[21] Officials in Sichuan said that there were no reports of collapsed buildings.[22] The earthquake disrupted the supply of electricity to over 49,000 homes. Repairs were made and power supply was resumed to at least 18,000 homes.[23]
All four fatalities and 42 injured individuals were reported in nearby Baoxing County.[3] Some of the injured were transported to nearby hospitals for treatment. The Ya'an Municipal Party Committee Office said that the four victims were fatally struck by falling rocks.[24]
The earthquake was felt with an intensity of at least VI over an estimated 3,887 km2 area. A maximum liedu of VIII was observed in Taiping, Shuangshi, Lingguan, and Muping. The intensity covered a 76 km × 65 km (131 km2) area. Intensity VII was felt across a 979 km2 area. In Chengdu, the earthquake was felt VI.[2]
Emergency response
At least nine seconds of
A Level 3 emergency response was ordered by the Chinese government on the four-level emergency response system. At least 4,500 personnel consisting of medical and emergency responders were dispatch to the epicenter area.[20] In Meishan, 15 firetrucks and 60 personnel were dispatched. Local fire and rescue services were also activated.[28] Staff at the Red Cross Society of China in Sichuan were mobilized to the affected area to distribute relief supplies.[29] Officials from the Sichuan Provincial Department of Housing and Urban-Rural Development said that an investigation would be carried out to assess the damage.[30] On June 2, electrical services was restored to over 48,000 households while an estimated 3,339 were still awaiting restoration.[31]
A total of 12,772 residents were affected and displaced.[21] Affected residents in Lushan were resettled in tents at a nearby school in Taiping. The school also served as a supply distribution center. Relief workers and resettled villagers reported that the walls of the school had cracks and shattered.[32]
See also
References
- ^ a b "M 5.9 - 45 km W of Linqiong, China". earthquake.usgs.gov. United States Geological Survey. 1 June 2022. Archived from the original on 1 June 2022. Retrieved 1 June 2022.
- ^ a b Xiang Nan, ed. (4 June 2022). "中国地震局发布四川芦山6.1级地震烈度图" [The China Earthquake Administration released the intensity map of the Sichuan Lushan earthquake with a magnitude of 6.1] (in Chinese). China Earthquake Administration. Archived from the original on 3 August 2022. Retrieved 5 June 2022.
- ^ a b Jia Yichao; Fan Jianfeng (3 June 2022). Chen Zhouying (ed.). "四川芦山"6·1"地震造成4人死亡42人受伤 14427人受灾" [Sichuan Lushan "6.1" earthquake caused 4 deaths, 42 injuries, 14,427 people affected]. China Central Television. Hangzhou Net. Archived from the original on 3 June 2022. Retrieved 3 June 2022.
- ^ Becky Oskin (21 April 2013). "What Caused The Deadly China Earthquake?". Live Science. Archived from the original on 6 October 2021. Retrieved 1 June 2022.
- from the original on 2022-06-01. Retrieved 2022-06-01.
- ^ "6月1日17时0分在四川雅安市芦山县发生6.1级地震" [At 17:00 on June 1, an earthquake of magnitude 6.1 occurred in Lushan County, Ya'an City, Sichuan Province.] (in Chinese). China Earthquake Networks Center. 1 June 2022. Archived from the original on 5 June 2022. Retrieved 1 June 2022.
- ^ "M 5.3 - WESTERN SICHUAN, CHINA - 2022-06-01 09:03:07 UTC". emsc-csem.org. European-Mediterranean Seismological Centre. 1 June 2022. Archived from the original on 1 June 2022. Retrieved 2 June 2022.
- ^ Zhang Zhuxin, ed. (1 June 2022). "芦山6.1级地震伤亡情况通报" (in Chinese). People's Government of Sichuan Province. Archived from the original on 5 June 2022. Retrieved 1 June 2022.
- ^ "四川地震局:此次四川芦山6.1级地震属2013年"4·20"7.0级地震余震" [Sichuan Earthquake Administration: The Sichuan Lushan M6.1 earthquake is an aftershock of the 2013 "4.20" M7.0 earthquake]. China Central Television (in Chinese). China News Service. 1 June 2022. Archived from the original on 5 June 2022. Retrieved 1 June 2022.
- ^ "M 4.9 - 74 km E of Kangding, China". earthquake.usgs.gov. 20 May 2022. Archived from the original on 3 August 2022. Retrieved 20 May 2022.
- ^ "四川汉源4.8级地震:消防救援队伍解除地震灾害二级响应". k.sina.com.cn (in Chinese). 20 May 2022. Archived from the original on 2022-06-02. Retrieved 2022-06-01.
- ^ "Sichuan Hanyuan earthquake of magnitude 4.8: fire rescue team relieves secondary response to earthquake disaster" (in Chinese). 20 May 2022. Archived from the original on 2 June 2022. Retrieved 20 May 2022.
- ^ "专家称汉源地震是2013年雅安地震余震,为何9年后仍有余震?" [Experts say that the Hanyuan earthquake was an aftershock of the 2013 Ya'an earthquake. Why are there still aftershocks 9 years later?]. Sohu (in Chinese). 20 May 2022. Archived from the original on 20 May 2022. Retrieved 20 May 2022.
- ^ "四川芦山县发生6.1级地震 专家:原震区近几日发生更大地震可能性不大" [A 6.1-magnitude earthquake occurred in Lushan County, Sichuan Expert: It is unlikely that a larger earthquake will occur in the original earthquake area in recent days]. Shanghai Securities Journal (in Chinese). 1 June 2022. Archived from the original on 1 June 2022. Retrieved 1 June 2022.
- ^ Xue Tao, ed. (1 June 2022). "专家:短期内芦山余震区再次发生更大地震的可能性不大" [Expert: It is unlikely that a larger earthquake will occur in the Lushan aftershock area in the short term]. Xinhua News Agency. Archived from the original on 5 June 2022. Retrieved 1 June 2022.
- ^ "四川雅安芦山6.1级地震:174名专家开展房屋建筑等安全应急评估工作" [Sichuan Ya'an Lushan earthquake of magnitude 6.1: 174 experts carry out safety emergency assessment work such as housing construction]. Qianlong.com. 2 June 2022. Archived from the original on 2 June 2022. Retrieved 2 June 2022.
- ^ "四川雅安地震增至4死41傷 多車遭滾落巨石擊中 (15:28)". China Central Television (in Chinese). Ming Pao. 2 June 2022. Archived from the original on 5 June 2022. Retrieved 2 June 2022.
- ^ "Powerful quake in China's Sichuan affects over 13,000 people, damages five hydropower projects". India Today. Beijing. Press Trust of India. 2 June 2022. Archived from the original on 2 June 2022. Retrieved 3 June 2022.
- ^ "直击雅安震中太平镇:房屋大多损伤较小,全镇居民住进安置点". Yangtse Evening Post (in Chinese). 2 June 2022. Archived from the original on 5 June 2022. Retrieved 2 June 2022.
- ^ a b Wang, Amber (1 June 2022). "Four dead as twin quakes shake Chinese city, epicentre of deadly 2013 shock". South China Morning Post. Archived from the original on 1 June 2022. Retrieved 1 June 2022.
- ^ a b "四川芦山发生6.1级地震 已转移安置群众12722人" [A 6.1-magnitude earthquake hit Lushan, Sichuan, and 12,722 people have been transferred and resettled]. China Central Television (in Chinese). Xiamen Net. 2 June 2022. Archived from the original on 2 June 2022. Retrieved 2 June 2022.
- Channel News Asia. 1 June 2022. Archivedfrom the original on 1 June 2022. Retrieved 2 June 2022.
- ^ "四川芦山地震影响4.9万多户用电 已恢复1.8万多户供电" [More than 49,000 households were affected by the Lushan earthquake in Sichuan, and power has been restored to more than 18,000 households]. cyzone.cn (in Chinese). 2 June 2022. Archived from the original on 3 August 2022. Retrieved 2 June 2022.
- ^ Xue Tao, ed. (1 June 2022). "四川雅安地震已造成4人死亡" [Four dead in Sichuan Ya'an earthquake]. Xinhua News Agency (in Chinese). Archived from the original on 1 June 2022. Retrieved 1 June 2022.
- ^ "四川雅安地震发生时第4秒发出预警 预警触达数千万人" [An early warning was issued in the 4th second of the Ya'an earthquake in Sichuan, reaching tens of millions of people]. Shanghai Securities Journal (in Chinese). 1 June 2022. Archived from the original on 1 June 2022. Retrieved 1 June 2022.
- ^ Ding Peng; Xie Mao; Yao Yun (2 June 2022). Zhang Jiameng (ed.). "4年发生多次地震 雅安所属的龙门山断裂带为何日渐活跃?专家解读" (in Chinese). China Business Network. Archived from the original on 5 June 2022. Retrieved 2 June 2022.
- ^ "四川雅安市地震增至4死14傷成都東站列車停運" [Sichuan Ya'an earthquake increases to 4 dead, 14 injured, trains at Chengdu East Railway Station suspended]. RTHK (in Chinese). 1 June 2022. Archived from the original on 1 June 2022. Retrieved 1 June 2022.
- ^ "芦山6.1级地震 眉山消防15车60人正前往震中". Sichuan News Network (in Chinese). Yunnan.cn. 1 June 2022. Archived from the original on 1 June 2022. Retrieved 1 June 2022.
- ^ "中国红十字会总会紧急支援四川芦山地震灾区" [The Red Cross Society of China urgently supports the earthquake-stricken area in Lushan, Sichuan]. Red Cross Society of China. 1 June 2022. Archived from the original on 5 June 2022. Retrieved 1 June 2022.
- ^ Yang Lan (2 June 2022). Liu Bo (ed.). "四川省住建厅:芦山6.1级地震灾区房屋建筑和基础设施受损情况正在摸排中" [Sichuan Provincial Department of Housing and Urban-rural Development: The damage to buildings and infrastructure in the earthquake-stricken area of Lushan 6.1 is under investigation]. thecover.cn (in Chinese). Sichuan Online. Archived from the original on 5 June 2022. Retrieved 2 June 2022.
- ^ Xiao Xiao; Liu Liang, eds. (3 June 2022). "雅安地震灾区已恢复4.8万余户供电" [More than 48,000 households in Ya'an earthquake-stricken area have been restored to power]. Xinhua News Agency (in Chinese). China Central Television. Archived from the original on 3 June 2022. Retrieved 3 June 2022.
- ^ Fu Xingshuai, ed. (2 June 2022). "四川雅安芦山地震现场见闻:太平中学安置点的不眠夜" (in Chinese). dzwww.com. Archived from the original on 1 June 2022. Retrieved 2 June 2022.
External links
- The International Seismological Centre has a bibliography and/or authoritative data for this event.
- Video showing the moment the quake hit a classroom - BBC News