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2008 Yingjiang Earthquakes
UTC time??
Magnitude5.9 Ms[1]
Depth10 km
Epicenter24°54′N 97°48′E / 24.9°N 97.8°E / 24.9; 97.8
(Yingjiang (Chinese: 盈江), Yunnan)
Areas affected People's Republic of China
Max. intensityliedu VIII (Heavily damaging)
TsunamiNone
Casualties5 killed, 130 injured, 21 serious[2]

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.

Earthquake Details[edit]

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[edit]

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[edit]

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.

References[edit]

  1. ^ a b "Roughly: Earthquake in Yingjiang County, Yunnan (云南省德宏傣族景颇族自治州盈江县地震)" (in Chinese). Earthquake Information System (地震信息系统). 2008-08-21. Retrieved 2008-09-20. Note: The second earthquake in this report is not accounted for in CENC's earthquake data base.
  2. ^ a b c d "Damages and intensity map of the earthquakes in Yingjiang, Yunnan on Aug. 20 and 21 (云南省盈江县8月20日、21日5.0、4.9、5.9级地震灾害损失及地震烈度分布图)" (in Chinese). 中国地震局门户网 (China Earthquake Administration Portal, CEA). 2008-09-17. Retrieved 2008-09-21.
  3. ^ "Roughly: Earthquake in Yingjiang County, Yunnan (云南省德宏傣族景颇族自治州盈江县地震)" (in Chinese). Earthquake Information System (地震信息系统). 2008-08-19. Retrieved 2008-09-20.
  4. ^ Absent from CNEC data base
  5. ^ "Roughly: Earthquake in Yingjiang County, Yunnan (云南省德宏傣族景颇族自治州盈江县地震)" (in Chinese). Earthquake Information System (地震信息系统). 2008-08-22. Retrieved 2008-09-20.
  6. ^ Not included in CEA's 9/17 report cited above.