盖州震群谱振幅相关系数的研究

Abstract

Abstract: The spectral amplitude correlation coefficient of the 2012 Qingshiling earthquake swarm and the 2014 Xihaiyu earthquake swarm in Gaizhou City were calculated by using digital seismic waveform data recorded in Liaoning Digital Seismic Network. The results show that the correlation coefficient of spectral amplitude of Qingshiling earthquake swarm is 0.72~0.90 and finally stabilizes at 0.75. The low value of the correlation coefficient of spectral amplitude indicates low consistency of focal mechanisms. The correlation coefficient of spectral amplitude of Xihaiyu earthquake swarm is 0.85~0.99 and finally stabilizes at 0.85. The high value of the correlation coefficient of spectral amplitude indicates high consistency of focal mechanisms. According to the analysis of the apparent stress in Gaizhou City, it is deemed that the variation of correlation coefficient of spectral amplitude of Gaizhou City is related to the change of stress level in this region.

Key words: Gaizhou earthquake swarms, Correlation coefficient of spectral amplitude, Consistency of focal mechanism, Stress level

CLC Number:

P315.7

YANG Shi-chao, ZHANG Bo, CAO Feng-juan, WANG Liang, SHAO Yuan-yuan. Study on Correlation Coefficient of Spectral Amplitude of Gaizhou Earthquake Swarms[J]. EARTHQUAKE, 2019, 39(3): 158-165.

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Study on Correlation Coefficient of Spectral Amplitude of Gaizhou Earthquake Swarms

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