Interpretation of a magnitude 6.8 earthquake in Luding County, Ganzi Prefecture, Sichuan

According to the China Earthquake Network, at 12:52 on September 5, 2022, a magnitude 6.8 earthquake occurred in Luding County, Ganzi Prefecture, Sichuan (29.59 degrees north latitude, 102.08 degrees east longitude), and the depth of the earthquake was 16 kilometers. As of 14:00 on September 5th, a total of 3 aftershocks were recorded 3 times, among which 3.0-3.9 earthquakes were 2 times, and a magnitude of 4.0 or above was once, and a magnitude 4.2 earthquake at 12:56.

The China Earthquake Taiwan Center organized experts to conduct research and analysis of earthquake activities near Luding County, Ganzi Prefecture, Sichuan. The magnitude 6.8 earthquake in Luding County occurred near the Fresh Water River Fracture Belt.

The Fresh Water River Fracture Belt is a large -scale left -rotation and broken break in the eastern part of the Qinghai -Tibet Plateau in my country. The south with the Anning River is connected in the Kangding area. One of the strongest break belts for the deformation of the crust. The break belt has a high earthquake activity in history and has occurred many strong earthquakes.

Since 1900, within 200 kilometers near the magnitude 6.8 earthquake in Luding 6.8, a total of 6 earthquakes occurred at 6 or more occurred. Among them, a magnitude 6.0-6.9 earthquake 15 times, a magnitude 7.0-7.9 earthquake 4 times, and the largest earthquake on April 14, 1955, a magnitude 7.5 earthquake in Kangding County, Ganzi Prefecture, Sichuan (about 53 kilometers from this earthquake). On June 1, 2022, a magnitude 6.1 earthquake in Lushan County, Ya'an City, Sichuan (about 120 kilometers from this earthquake), the nearest space distance was January 15, 1975. km).

According to the preliminary judgment of historical earthquake, seismic sequence attenuation characteristics, and seismic precursor information comprehensive, the possibility of larger earthquakes in the original earthquake again in the short term, and the aftershocks will continue for a period of time.

The earthquake department is further tracking and judging.

(Source: CCTV News Client)

【Edit: Yao Hao】

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