1990 Gonghe earthquake

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1990 Gonghe earthquake
1990 Gonghe earthquake is located in China
1990 Gonghe earthquake
Reverse
Areas affectedChina
Max. intensityIX (Violent)
Casualties126 dead[1]

The 1990 Gonghe earthquake occurred on April 26 at 17:37

Qinghai Province. The mainshock had a surface wave magnitude of 7.0 Ms  and a moment magnitude of 6.5 Mw .[2] It was presaged by two foreshocks that struck merely seconds before the main earthquake.[3][4] On the Mercalli intensity scale, the earthquake had a rating of IX (Violent).[5]

Damage

At least 126 people died and 2,049 left wounded by the earthquake.

Chinese Yuan.[7]

In the zone with the highest intensity, IX, encompassing Gonghe County, all brick and adobe constructed houses were razed. About 320 wood-framed and mud-walled settlements were destroyed, the only 12 left standing suffered serious damage. Brick and concrete bungalows did not collapse but they were severely compromised after the earthquake. In zones with intensities VII and VIII, more homes collapsed, causing casualties. Some old houses in zone VI also collapsed.[5]

Characteristics

The earthquake in the northeastern Tibetan Plateau according to seismologists,

blind thrust fault structure due to the absence of a surface rupture.[8] Elements of both sinistral strike-slip and reverse components were detected during the co-seismic rupture, with the latter having a greater sense.[9] The estimated length and width of the rupture is 37 km and 6 km respectively, with a slip of around 2.7 meters.[10]

See also

References

  1. ^ a b "CHINA: QINGHAI PROVINCE: GANGHE-XINGHAI". NGDC NCEI. NCEI. Retrieved 19 March 2021.
  2. ^ "M 6.5 - southern Qinghai, China". USGS-ANSS. USGS. Retrieved 19 March 2021.
  3. ^ "M 6.3 - northern Qinghai, China". USGS-ANSS. USGS. Retrieved 19 March 2021.
  4. ^ "M 6.2 - northern Qinghai, China". USGS-ANSS. USGS. Retrieved 19 March 2021.
  5. ^ a b Ma Wenjing, Zhang Yaling, Zou Wenwei. "The Gonghe magnitude 7.0 earthquake in Qinghai Province on April 26, 1990". data.earthquake.cn (in Chinese). Seismological Bureau of Qinghai Province. Retrieved 19 March 2021.{{cite web}}: CS1 maint: multiple names: authors list (link)
  6. ^ "青海共和地震". Chinese Academy of Sciences (in Chinese). Chinese Academy of Sciences. Retrieved 19 March 2021.
  7. ^ "新闻背景:1976年以来中国发生的六级以上大地震". gov.cn (in Chinese). Central People's Government of the People's Republic of China. Retrieved 19 March 2021.
  8. ISSN 0040-1951. Retrieved 19 March 2021.{{cite journal}}: CS1 maint: multiple names: authors list (link
    )
  9. doi:10.1007/BF00874741. Retrieved 19 March 2021.{{cite journal}}: CS1 maint: multiple names: authors list (link
    )
  10. doi:10.1007/s11589-999-0041-2. Retrieved 19 March 2021.{{cite journal}}: CS1 maint: multiple names: authors list (link
    )