[1]DUAN Yunge,CHEN Tianchang,SU Jinrong,et al.The Temporal-Spatial Pattern of Focal Mechanism Consistency of Small Earthquake Sequence in Lushan[J].Journal of Seismological Research,2018,41(02):251-257.
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The Temporal-Spatial Pattern of Focal Mechanism Consistency of Small Earthquake Sequence in Lushan
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
41
Number of periods:
2018 02
Page number:
251-257
Column:
Public date:
2018-04-20
- Title:
- The Temporal-Spatial Pattern of Focal Mechanism Consistency of Small Earthquake Sequence in Lushan
- Keywords:
- Lushan 7.0 Earthquake; aftershock sequence; correlation coefficient of spectral amplitude; focal mechanism consistency
- CLC:
- P315.7
- DOI:
- -
- Abstract:
- The method of spectral amplitude correlation is used to research the focal mechanism consistency of aftershocks from ML2.0 to ML4.0 of Lushan MS7.0,which from 20th April to 30th June,2013. 5 subareas are set up for the research. The average correlation coefficient are calculate in each subarea,using the digital waveform records from permanent stations in Sichuan network. The result shows that the average correlation coefficient is highest in sub 2 just after the main earthquake,which reached 0.809,and the lowest one is 0.524 in sub 4 in June. The average correlation coefficient in the whole area reduced from 0.785 to 0.575. It is indicate that the average correlation coefficient in each subarea decreased as time goes by. It is highest in sub 2 in same period of time,and which decreased with the distance to the subarea. This shows that,the focal mechanism consistency of aftershocks gradually getting worse with the release of the regional stress field energy after main earthquake,and the focal mechanism become more disordered.
- References:
- -
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Last Update:
2018-04-23