There was an earthquake. According to records, the largest earthquake occurred in Lixian County, Changde, with a magnitude of 6.8 and a time of 163 1 August. For a long time, there have been six or seven earthquakes of magnitude 2 or above every year in Hunan Province, and there have been about/kloc-0 earthquakes of magnitude 3 or above every year, which have not caused great damage.

Hunan is located in Hanshui and Daloushan-Xuefeng seismic belts in the middle and lower reaches of the Yangtze River, and is relatively active in the South China seismic belt. There are many active faults in the area, and the geological conditions are complex, which has the historical and structural background of moderate and strong earthquakes.

In addition, the Hunan earthquake also has the characteristics of shallow source and high intensity. The earthquake with magnitude 3 is strong and may cause damage, and the earthquake with magnitude 4 or so may cause disaster. Since 1500, destructive earthquakes have occurred in 10 cities in the province, totaling more than 20 times, and strong earthquakes have occurred in all cities and States.

Extended data:

Changde earthquake 163 1:

According to historical records, the earthquake caused serious casualties and property losses. According to the analysis of the ancient earthquake relics recently discovered in Changsha, there have been at least two earthquakes of magnitude 7 or above in Hunan. There are three moderate earthquakes recorded in Changsha in history. Changsha is one of the key cities for monitoring and defending the national 13 earthquake determined by the State Council.

Some knowledge points of earthquake prevention:

1. is a better method for earthquake prevention and rapid evacuation to a safe place after the earthquake. This is because the earthquake warning time is very short, people often can't act independently, and it is very difficult to run out of the room because of the deformation of doors and windows. If you are in a building, it is almost impossible to get out. However, if the early warning phenomenon is found in the bungalow and the outdoor is relatively empty, you can try to run out of the shock absorber.

2. Hiding under or next to a solid, hard-to-fall, body-covering object indoors, with a small and supportive room; Outdoor away from buildings, empty and safe place.

3, should get down, so that the body center of gravity to a minimum, face down, do not press the nose and mouth, to facilitate breathing; Try to curl up when squatting or sitting down; Grasp the solid objects around you to prevent falling or injury due to body displacement and contact with solid objects.

Reference source: Baidu Encyclopedia-163 1 Changde Earthquake.

Baidu encyclopedia-earthquake