User:Jarda2020/2022 Dali earthquake
  | |
| UTC time | 2022-01-04 17:51:27 |
|---|---|
| USGS-ANSS | ComCat |
| Local date | 5 January 2022 |
| Local time | 01:51 (China Standard Time) |
| Magnitude | 6.8 Mw |
| Depth | 11.8 km (7.3 mi) |
| Epicenter | 25°45′40″N 100°00′29″E / 25.761°N 100.008°E |
| Fault | Red River Fault |
| Type | Strike-slip |
| Areas affected | Dali City, Yunnan, China |
| Max. intensity | MMI VIII (Severe) |
| Foreshocks | Mw 5.5[1] |
| Aftershocks | 58 above Mw 4.0 (Strongest is 5.7 Mw [2]) |
| Casualties | 27 injured[3] |
On 4 January 2022, a 6.8 magnitude earthquake strucked the Dali City, Yunnan, China, at a depth of 11.8 km. 27 people were injured by the strong shaking. The earthquake was referred by the Chinese media as the 01.05 earthquake or 2022 Yangbi earthquake.[4]
Tectonic setting
[edit]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, 2014 and 2021. The nearest active faults in Dali City are the Xiaojiang Fault and Red River Fault. The Red River Fault caused two deadly earthquakes in 1925 near Dali and another in 1970 in Tonghai county.[5]
Earthquake
[edit]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.[6] According to the United States Geological Survey (USGS), the earthquake had a moment magnitude of 6.8 while the China Earthquake Networks Center (CENC) and China Earthquake Administration (CEA) measured the earthquake at 7.1 on the surface-wave magnitude scale.[7] The depth of focus is reported to be 11.8 km by the USGS and 8 km by the CEA.
Several hours later, an unrelated Mw 5.9 earthquake struck Southern Qinghai province that was felt in the area. [8]
See also
[edit]- List of earthquakes in 2022
- 2021 Dali earthquake
- List of earthquakes in China
- List of earthquakes in Yunnan
References
[edit]- ^ "M 5.5 - 22 km WNW of Dali, China".
- ^ {{Cite web|title=M 5.7 - 24 km WNW of Dali, China|url=https://earthquake.usgs.gov/}
- ^ Qian Zhongbing, ed. (4 January 2022). "1 dead and 22 injured in the Yangbi earthquake in Yunnan" (in Chinese). Xinhua Net. Retrieved 4 January 2022.
- ^ "Many people injured after a strong 6.8-magnitude earthquake in Dali, China". CNN. 5 January 2022. Retrieved 5 January 2022.
{{cite web}}: CS1 maint: url-status (link) - ^ 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.
- ^ "M 6.1 - 28 km NW of Dali, China". United States Geological Survey. 21 May 2021. Retrieved 21 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 5.9 - Southern Qinghai, China". earthquake.usgs.gov. Retrieved 6 January 2022.
{{cite web}}: CS1 maint: url-status (link)