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| UTC time | 2013-07-21 23:45:56 |
|---|---|
| ISC event | 608441184 |
| USGS-ANSS | ComCat |
| Local date | 22 July 2013 |
| Local time | 07:45 (UTC+8) |
| Magnitude | Ms 6.6 (CENC) [1] Mw 5.9 (USGS) [2] Mw 6.0 (EMSC) [3] |
| Depth | 20 kilometres (12 mi) |
| Epicenter | 34°30′N104°12′E / 34.5°N 104.2°E |
| Areas affected | China |
| Max. intensity | MMI VII (Very strong) |
| Casualties | 95 dead, 2,395 injured (as of 25 July 2013) [4] |
| Dingxi earthquakes | |||||||
|---|---|---|---|---|---|---|---|
| Traditional Chinese | 定西地震 | ||||||
| Simplified Chinese | 定西地震 | ||||||
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On 22 July 2013,a series of earthquakes occurred in Dingxi,Gansu. The first quake struck at 07:45 China Standard Time with an epicenter located at the border of Min County and Zhang County. [1] The magnitude of the initial earthquake was placed at Ms 6.6 by the China Earthquake Data Center with a focal depth of 20.0 kilometres (12 mi). [1] It was measured at Mw 5.9 by the United States Geological Survey (USGS) [2] and Mw 6.0 by the European Alert System. [3] Another strong quake occurred about one hour later,measuring 5.6 magnitude by the USGS. [5] As of 18:00 CST (10:00 UTC),22 July 2013,422 aftershocks had been recorded. [6] The earthquakes were also felt in the nearby cities of Tianshui and Lanzhou in Gansu,as well as Xi'an,Baoji,and Xianyang in neighbouring Shaanxi. [6]
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As of 23:00 CST,23 July 2013,the earthquakes had caused at least 95 deaths,and more than 2,300 people were injured. [6]
