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The 2008 Yingjiang Earthquakes were a series of earthquakes ranging from surface wave magnitude (Ms) 4.9 to 5.9 that struck Yingjiang County, Yunnan privince between August 19 (in UTC; August 20 local time) and August 21, 2008. It caused 5 deaths, 21 serious injuries, and RMB 2.7 billion in direct economic damage.
| UTC time | ?? |
|---|---|
| Magnitude | 5.9 Ms[1] |
| Depth | 10 km |
| Epicenter | 24.9°N 97.8°E （Yingjiang (Chinese: 盈江), Yunnan) |
| Areas affected |  China |
| Max. intensity | liedu VIII (Heavily damaging) |
| Tsunami | None |
| Casualties | 5 killed, 130 injured, 21 serious[2] |
Earthquake Details
According to the China Earthquake Administration (CEA), a Ms 5.0 earthquake struck Yingjiang County, Yunnan province, China on August 20, 2008 at 05:35:09 China Standard Time (CST - 2135 UTC, August 19, 2008). It was followed by two quakes Ms 4.9 and Ms 5.9 in the same area. Maximum intensity reached liedu VIII ([2] (equivalent to EMS-94 VIII "Heavily damaging").
Sequence of earthquakes
Below is the list of earthquakes.
| # | CST | UTC | Place | Lat. | Long. | Mag. |
|---|---|---|---|---|---|---|
| 1[3] | 2008-08-20 05:35:09 | 2008-08-19 21:35:09 | Yingjiang, Yunnan | 25.1 | 97.9 | 5.0 |
| 2[2][4] | 2008-08-21 20:20 | 2008-08-21 12:20 | Yingjiang, Yunnan | 25.1 | 97.9 | 4.9 |
| 3[1] | 2008-08-21 20:24:32 | 2008-08-21 12:24:32 | Yingjiang, Yunnan | 25.1 | 97.9 | 4.9 |
| 4[5][6] | 2008-08-22 20:06:14 | 2008-08-22 12:35:09 | Yingjiang, Yunnan | 25.0 | 97.9 | 4.7 |
Response, casualties, and intensities
According to CEA,[2] these earthquakes caused 5 deaths and 21 serious injuries. Affected people amounted to 209,605, roughly 2/3 of the total population in affected areas. Direct financial damages amounted to RMB 1.3 billion. In addition to building damages, the heaviest infrastructure damages occurred to water resources facilities.
On the seismic intensity map published by CEA, maximum intensity of these earthquakes reached liedu VIII on China Seismic Intensity Scale (CSIS), which is somewhat equivalent to VIII (Heavily damaging) on EMS-94 from which CSIS drew reference. Liedu-VIII zone spans 26 km2 near the epicenter. Total area of liedu VI (Slightly damaging) and above is a north-south oval of 4,511 km2.