Very strong fatal earthquakes in Gansu province, China
2013 Dingxi earthquakes
UTC time
2013-07-21 23:45:56
ISC event
608441184
USGS-ANSS
ComCat
Local date
22 July 2013 (2013-07-22)
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 / 34.5; 104.2
Areas affected
China
Max. intensity
MMI VII (Very strong)
Casualties
95 dead, 2,395 injured (as of 25 July 2013)[4]
Shake map of the earthquake. (By United States Geological Survey)
Dingxi earthquakes
Traditional Chinese
定西地震
Simplified Chinese
定西地震
Transcriptions
Standard Mandarin
Hanyu Pinyin
Dìngxī Dìzhèn
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]
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]
^ abc甘肃省定西市岷县、漳县交界发生6.6级地震 (in Chinese). China Earthquake Networks Center. 22 July 2013. Archived from the original on 22 July 2013. Retrieved 22 July 2013.
^ ab"M5.9 – 13 km E of Chabu, China (BETA)". USGS. 22 July 2013. Archived from the original on 31 July 2013.
^ ab"M 6.0 – Gansu, China – 2013-07-21 23:45:57 UTC". EMSC. 22 July 2013.
^"China earthquake death toll reaches 94", CBC News, 23 July 2013
^"China's Gansu province hit by powerful earthquakes". BBC. 22 July 2013. Retrieved 22 July 2013.
^ abc"89 dead, 5 missing in NW China quake". Xinhua News Agency. 22 July 2013. Archived from the original on 25 July 2013. Retrieved 22 July 2013.
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