2008 Yingjiang earthquakes

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2008 Yingjiang earthquakes
China Yunnan adm location map.svg
Bullseye1.png
UTC  time2008-08-30 08:30:53
ISC  event 13392944
USGS-ANSS ComCat
Local date20 August–3 September 2008
Magnitude5.9 Ms [1]
6.0 Mw
Depth10 km
Epicenter 24°54′N97°48′E / 24.9°N 97.8°E / 24.9; 97.8
(Yingjiang, Yunnan)
Areas affected China
Myanmar
Max. intensity CSIS VIII
Casualties5 dead, 130 injured [2]

The 2008 Yingjiang earthquakes were a series of major earthquakes ranging from surface-wave magnitude (Ms) 4.1 to 5.9 that struck Yingjiang County, Yunnan province, China between August 19 (in UTC; August 20 local time) and September 3. It caused 5 deaths, 130 injuries (21 of which were serious), and RMB  2.7 billion in direct economic damage. USGS put the magnitude of the strongest one to Mw 6.0. [3]

Contents

Earthquake

According to the China Earthquake Administration (CEA) and its subordinate China Earthquake Network Center (CENC), 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). A CEA report published on September 17 [2] described two additional strong quakes of Ms 4.9 and Ms 5.9 in the same area the following day; CENC's data base, on the other hand, did not include the earthquake of Ms 4.9 at 20:20 CST on August 21 as the CEA report described, but reveals additional ones after the date. [4]

Sequence of earthquakes

# CST UTC PlaceLat.Long. Ms
1 [5] 2008-08-20 05:35:092008-08-19 21:35:09 Yingjiang, Yunnan 25.197.95.0
2 [2] [6] 2008-08-21 20:202008-08-21 12:20 Yingjiang, Yunnan 25.197.94.9
3 [1] 2008-08-21 20:24:322008-08-21 12:24:32 Yingjiang, Yunnan 25.197.95.9
4 [7] [8] 2008-08-22 20:06:142008-08-22 12:35:09 Yingjiang, Yunnan 25.097.94.7
5 [9] 2008-09-03 02:59:182008-09-02 18:59:18 Yingjiang, Yunnan 24.997.94.1
6 [10] [11] 2008-09-03 14:27:202008-09-03 06:27:20 Yingjiang, Yunnan 24.997.94.8

Note: Earthquakes #4 and after are not included in CEA summary; earthquake #2 is unaccounted for in CENC data base.

Impact

Casualties

According to CEA, [2] these earthquakes caused 5 deaths and 21 others were seriously hurt, as well as 109 minor injuries. [2] Through the Yunnan Earthquake Administration (YNEA), the provincial government invoked Level IV emergence response protocol in the relief. The number of affected people is said to be around 210,000, roughly 2/3 of the total population in the affected areas. Direct financial damage amounted to RMB  1.3 billion. In addition to building damage, the heaviest infrastructure damage occurred to water resources facilities.

Intensity

On the seismic intensity map published by CEA, [2] maximum intensity of these earthquakes reached liedu VIII on China seismic intensity scale (CSIS), which is somewhat equivalent to VIII (Severe) on the MMI and 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.

See also

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References

  1. 1 2 "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.
  2. 1 2 3 4 5 6 "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 2008-09-20. Note: The second earthquake in this report is not accounted for in CENC's earthquake data base.
  3. ↑ "Significant Earthquakes of the World". Archived from the original on 2013-09-12. Retrieved 2013-11-16.
  4. ↑ "Earthquake map in China and neighboring areas (中国及周边震中分布图)". Archived from the original on 3 November 2008. Retrieved 2008-09-20.
  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). 2008-08-19. Retrieved 2008-09-20.[ dead link ]
  6. ↑ Absent from CNEC data base
  7. ↑ "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.[ dead link ]
  8. ↑ This and subsequent earthquakes are not included in CEA's 9/17 report cited above.
  9. ↑ "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). 2008-09-02. Retrieved 2008-09-20.[ dead link ]
  10. ↑ "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). 2008-09-03. Retrieved 2008-09-20.[ dead link ]
  11. ↑ "Another M4.8 earthquake struck Yingjiang County (盈江县再次发生4.8级地震)" (in Chinese). Yunnan Earthquake Administration, YNEA (云南地震局). 2008-09-05. Retrieved 2008-09-20.[ dead link ]
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