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Research on the Q-value,Site Response and Seismic Source Parameters in Jiangsu and Its Adjacent Areas
Kang Qingqing,Gu Qinping,Miao Fajun,Zhang Jinchuan,Zhou Kangya,Yang Chi,Li Zhengkai
Author NameAffiliationE-mail
Kang Qingqing Earthquake Administration of Jiangsu Province, Nanjing 210014, China  
Gu Qinping Earthquake Administration of Jiangsu Province, Nanjing 210014, China;Institute of Geophysics, China Earthquake Adninistration, Beijing 100081, China gqp1221@163.com 
Miao Fajun Earthquake Administration of Jiangsu Province, Nanjing 210014, China  
Zhang Jinchuan Earthquake Administration of Jiangsu Province, Nanjing 210014, China  
Zhou Kangya Earthquake Administration of Jiangsu Province, Nanjing 210014, China  
Yang Chi Earthquake Administration of Jiangsu Province, Nanjing 210014, China  
Li Zhengkai Earthquake Administration of Jiangsu Province, Nanjing 210014, China  
摘要:
Based on 49 digital seismograms recorded by 73 seismic stations in the Jiangsu Telemetered Seismic Network, the paper uses Atkinson's method to calculate the inelastic attenuation coefficient of the Jiangsu area. We find that the frequency-dependent Q in the Jiangsu region is Q(f)=272.1·f0.5575. We also use Moya's method to invert the 63 stations' site responses. The results show that the site responses of the 25 stations in Jiangsu are approximately 1 at a range between 1Hz and 20Hz, which is consistent with their basements on rocks. The response curves of the site responses of the 14 underground stations are similar to each other. Their site responses show an amplification at low frequencies and minimization at high frequencies. The calculation of the Brune model on the waveform data of ML ≥ 2.5 earthquakes from Jiangsu Digital Seismic Network between October 2010 and May 2015 in terms of seismic source parameters of 58 seismic waves shows that there are good correlations between seismic magnitude and other source parameters such as seismic moment, source radius and corner frequency, while the correlations between seismic magnitude and stress drop, and stress drop and source radius are not so good.
关键词:  Jiangsu and its adjacent areas  Q-value  Site response  Source parameters
DOI:
分类号:
基金项目:This project was jointly sponsored by the "Science for Earthquake Resilience" (1730801) and the Youth Fund Program of Earthquake Administration of Jiangsu Province,China (201405).
Research on the Q-value,Site Response and Seismic Source Parameters in Jiangsu and Its Adjacent Areas
Kang Qingqing,Gu Qinping,Miao Fajun,Zhang Jinchuan,Zhou Kangya,Yang Chi,Li Zhengkai
Abstract:
Based on 49 digital seismograms recorded by 73 seismic stations in the Jiangsu Telemetered Seismic Network, the paper uses Atkinson's method to calculate the inelastic attenuation coefficient of the Jiangsu area. We find that the frequency-dependent Q in the Jiangsu region is Q(f)=272.1·f0.5575. We also use Moya's method to invert the 63 stations' site responses. The results show that the site responses of the 25 stations in Jiangsu are approximately 1 at a range between 1Hz and 20Hz, which is consistent with their basements on rocks. The response curves of the site responses of the 14 underground stations are similar to each other. Their site responses show an amplification at low frequencies and minimization at high frequencies. The calculation of the Brune model on the waveform data of ML ≥ 2.5 earthquakes from Jiangsu Digital Seismic Network between October 2010 and May 2015 in terms of seismic source parameters of 58 seismic waves shows that there are good correlations between seismic magnitude and other source parameters such as seismic moment, source radius and corner frequency, while the correlations between seismic magnitude and stress drop, and stress drop and source radius are not so good.
Key words:  Jiangsu and its adjacent areas  Q-value  Site response  Source parameters