[1]LU Yongkun,ZHANG Jianguo,ZHANG Fanghao,et al.The Characteristics of the Seismic Intensity and Damage of the 2021 Yangbi,Yunnan MS6.4 Earthquake[J].Journal of Seismological Research,2021,44(03):429-438.
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The Characteristics of the Seismic Intensity and Damage of the 2021 Yangbi,Yunnan MS6.4 Earthquake
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
44
Number of periods:
2021 03
Page number:
429-438
Column:
Public date:
2021-10-20
- Title:
- The Characteristics of the Seismic Intensity and Damage of the 2021 Yangbi,Yunnan MS6.4 Earthquake
- CLC:
- P315.94
- DOI:
- -
- Abstract:
- Based on the field investigation and near site strong motion observation of the Yangbi MS6.4 Earthquake,and according to the earthquake’s focal mechanism solution,aftershock distribution,and the geological tectonics,we estimated the seismic intensity of the earthquake.Then we have summarized the essential characteristics of the seismic damages and made the initial explanation of the damages based on the various damage phenomena.By comparing with the seismic intensity and damages caused by other earthquakes with similar magnitude in Yunnan Province,we proposed some preliminary countermeasures for and suggestions about promoting the integrative competence in seismic disaster prevention and mitigation.The major axis of the intensity zone of the earthquake is in NNW direction,which is consistent with the strike of the Weixi-Qiaohou fault near the epicenter,and coincides with strong motion observation records,sequence’s spatial distribution,and focal mechanism solution of the earthquake.Compared with the same-magnitude earthquakes in Yunnan,the disaster of the Yangbi MS6.4 Earthquake is obviously lighter.The main reason is that the foreshocks had been occurring continually for many days before the main shock,and the CPC committees and governments at all levels took measures to mobilize and evacuate people timely and effectively.It is necessary to scientifically plan the layout of urban and rural construction,gradually reduce civil structure buildings,and improve the comprehensive ability of disaster prevention and mitigation.Governments at all levels should value highly and make great efforts to help rural residents in mountainous areas whose houses were seriously damaged by the earthquake to prevent returning to poverty due to the disaster.
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Last Update:
2021-10-20