1931 Fuyun earthquake
| UTC time | 1931-08-10 21:18:45 |
|---|---|
| ISC event | 906933 |
| USGS-ANSS | ComCat |
| Local date | August 11, 1931 |
| Local time | 05:18:45 |
| Magnitude | Mw 8.0 |
| Depth | 20 km |
| Epicenter | 46°48′N 89°54′E / 46.8°N 89.9°E |
| Max. intensity | MMI XI (Extreme) |
| Casualties | 10,000 dead |
The 1931 Fuyun earthquake (富蕴地震) occurred on August 10 at 21:18 UTC. The epicenter was near Fuyun County of northern Xinjiang, China. It was a Mw 8.0 earthquake and had a surface rupture of 171 km with a maximal horizontal displacement of 14 m along the Koktokay-Ertai fault zone (可可托海-二台断裂带). The Koktokay-Ertai fault has a slip rate of 4±2 mm per year. The rupture of this earthquake was caused by right-lateral strike-slip movement with normal component. The rupture is well preserved and becomes one of the main features of the Koktokay National Geopark (可可托海国家地质公园) located in Koktokay.