The population of 140,000 within 20 kilometers of the epicenter of the Sichuan earthquake is 29 kilometers away from Xingwen County Town.

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 The population of 140,000 within 20 kilometers of the epicenter of the Sichuan earthquake is 29 kilometers away from Xingwen County Town.


According to the official determination of the China Seismic Network, an earthquake of M 5.7 occurred at 12:46 on December 16 in Xingwen County, Yibin City, Sichuan Province, with a focal depth of 12 km, the epicenter at 28.24 degrees north latitude and 104.95 degrees east longitude.

After the earthquake, the Sichuan Seismological Bureau issued the relevant information of the epicenter as follows:

Thermal Population:

According to the analysis of large mobile population data, the population of the earthquake is about 140,000 within 20 kilometers, about 2.27 million within 50 kilometers and about 10.65 million within 100 kilometers.

Nearby villages and towns:

The villages within 5 kilometers of the earthquake are Xintang Village, Yingchun Village, Sulfur Mine Village, Longshilong Town, Huangjiagou Town, Zhoujia Town, Chen Jiazhai Town, Tomb Slope, Daduo Town, Damiao Town, Jiushi Town, Didong Town, Meidong Town, Caoying Town, Shangluo Town, Shuanghe Town, Longtou Town and Gongquan Town.

The surrounding counties:

The epicenter was 29 kilometers from Xingwen County, 32 kilometers from Gongxian County, 38 kilometers from Changning County, 44 kilometers from Julian County, 45 kilometers from Weixin County, Yunnan Province, 64 kilometers from Yibin City and 215 kilometers from Chongqing City.

Epicenter topography:

The average elevation of the epicenter is about 986 meters within 5 kilometers.

Historical earthquakes:

According to the catalogue of quick report of China Seismological Network, 142 earthquakes with magnitude 3 or more occurred in the past five years within 200 kilometers around the epicenter. The largest earthquake occurred on August 3, 2014 in Ludian County, Zhaotong City, Yunnan Province (203 kilometers from the epicenter). The distribution of the first 50 historical earthquakes with magnitude is shown in the figure.

Seismic zoning:

According to the Fifth Generation Zoning Map, the epicenter is located in the fortified area of degree VI.

(Provided by Sichuan Seismological Bureau)

Source: Sichuan Online Author: Fuzhenqing Responsible Editor: Shi Jianlei_NBJ11331