2021 Dali earthquake
This article documents a current event. Information may change rapidly as the event progresses, and initial news reports may be unreliable. The latest updates to this article may not reflect the most current information. |
UTC time | 2021-05-21 13:48:37 |
---|---|
ISC event | 620436007 |
USGS-ANSS | ComCat |
Local date | 2021-05-21 |
Local time | 21:48 (China Standard Time) |
Magnitude | Mw 6.1 |
Depth | 10.0 km |
Epicenter | Dali City, Yunnan, China |
Fault | Red River Fault |
Type | Strike-slip |
Max. intensity | MMI VIII (Severe) |
Foreshocks | Mw 5.3 |
Aftershocks | Two 5.0+ |
Casualties | 3 dead, 28 injured[1][2] |
A magnitude 6.1 earthquake struck China 28 km north west of Dali City, Yunnan on 21 May at a depth of 10.0 km.[3] Three individuals have been confirmed dead, while another 27 were injured.[1][2] The earthquake is currently referred to by the Chinese media as the 5.21 earthquake or 2021 Yangbi earthquake.
Tectonic setting
Yunnan lies at the southeastern boundary of the Tibetan Plateau where strike-slip faults accommodate crustal rotation resulting from deformation caused by the ongoing collision between the Indian Plate and the Eurasian Plate which formed the Himalayas and the Tibetan Plateau. The presence of active faults make the region prone to moderate to large earthquakes. Major events in Yunnan Province have occurred in 1833, 1974, 1976, 1988 and 2014. The nearest active faults in Dali City are the Xiaojiang Fault and Red River Fault.[4] The Red River Fault caused two deadly earthquakes in 1925 near Dali and another in 1970 in Tonghai county.[5]
Earthquake
The earthquake was the result of strike-slip faulting at a shallow depth. It had a maximum intensity of VIII (Severe) on the Mercalli intensity scale.[3] According to the United States Geological Survey (USGS), the earthquake had a moment magnitude of 6.1 while the China Earthquake Networks Center (CENC) and China Earthquake Administration (CEA) measured the earthquake at 6.4 on the surface wave magnitude scale.[6] The depth of focus is reported to be 10 km by the USGS and 8 km by the CEA.
Several hours later, an unrelated Mw 7.3 earthquake struck Southern Qinghai province that was felt in the area. [7]
Casualties
Two fatalities were reported in Yangbi County while another three suffered serious injuries. One of the victims, a truck driver, was killed as a result of a rockfall while another woman in a trapped vehicle had leg injuries.[8][9] A total of 26 people in the county were injured.[2] In Yongping County, the earthquake killed one person, and left another injured.[10] A 28th injury was reported in Dali City.[11]
Damage
The earthquake damaged some 12,882 homes in Yangbi County.[2]
See also
- List of earthquakes in 2021
- List of earthquakes in China
- List of earthquakes in Yunnan
- 1925 Dali earthquake
References
- ^ a b "Two people died in the magnitude 6.4 earthquake in Yangbi, Yunnan" (in Chinese). Xinhua Net. 21 May 2021. Retrieved 21 May 2021.
- ^ a b c d Qian Zhongbing, ed. (21 May 2021). "1 dead and 22 injured in the Yangbi earthquake in Yunnan" (in Chinese). Xinhua Net. Retrieved 21 May 2021.
- ^ a b "M 6.1 - 28 km NW of Dali, China". United States Geological Survey. 21 May 2021. Retrieved 21 May 2021.
- ^ CCTV News Client (22 May 2021). Yang Yang (ed.). "There is still a possibility of an earthquake of magnitude 5 to 6 in Yangbi County, Dali Prefecture, Yunnan" (in Chinese). china.huanqiu.com. Retrieved 22 May 2021.
- ^ Zhao Yuhe; Yang Xiu Dazhen; Lu Xueli (22 May 2021). "揪心!雲南、青海兩地深夜發生強震,已有傷亡" (in Chinese). Beijing Sina.com. Retrieved 22 May 2021.
- ^ China Earthquake Administration. "A magnitude 6.4 earthquake occurred in Yangbi County, Dali Prefecture, Yunnan Province at 21:48 on May 21". cea.gov.cn. China Earthquake Administration. Retrieved 21 May 2021.
- ^ "M 7.4 - Southern Qinghai, China". earthquake.usgs.gov. Retrieved 2021-05-21.
- ^ CCTV News Client (22 May 2021). "云南漾濞地震滚石砸中货车 1人死亡 1人被救" (in Chinese). china.huanqiu.com. Retrieved 22 May 2021.
- ^ Zhang Qi (22 May 2021). "In the Dali earthquake in Yunnan, a truck driver was hit by a rolling stone and killed, and 6 others were injured" (in Chinese). Chutian Metropolis Daily News. Retrieved 22 May 2021.
- ^ "云南大理州漾濞地震已致3人死亡,28人受伤" (in Chinese). Sohu. 22 May 2021. Retrieved 22 May 2021.
- ^ CCTV News (21 May 2021). Zhou Zijing (ed.). "The magnitude 6.4 earthquake in Yangbi, Yunnan has killed 3 people and injured 27". The Paper. Retrieved 21 May 2021.