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(the original title: 3.1 earthquake struck sichuan ganzi prefectures have to rong county)
, according to the China earthquake networks officially measured on 30 J
anuary 19 7 points, t have to rong county in sichuan when a magnitude 3.1 eart
hquake, focal depth of 13 km, epicenter located 28.47 degrees north latitude, 99.36 degrees east longitude.
Based on the background
Terrain: the epicenter within 5 km of the epicenter of an average of about 3630 meters above sea level.
Historical earthquake: according to the China earthquake networks studies directory, within 200 km
around the epicenter 3 magnitude earthquake in nearly five years, a total of 35 times, and is th
e biggest earthquake on September 23, 2016 in sichuan province ganzizhou litang county’s 5.1 magnitude earthquake (dista
nce from the epicenter 183 kilometers), historical earthquake distribution as shown in figure.