青岛震群体波衰减特性研究
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摘要
随着观测能力的提高和观测手段的改善,反映地球介质特性Q值的研究不断深化和发展。利用山东数字测震台网记录的数字地震波资料,采用时间域P波脉冲宽度法对2003年和2004年青岛震群进行Q值计算,对初动半周期的两种不同获取方法进行了比较,总结了P波脉冲宽度法的适用条件及计算效果,得到青岛地区和胶东地区的Q值。
With the enhancement of observation capabilities and the improvement of observation means, the research of Q value reflecting the earth medium characteristics continues to deepen and develop. In this paper, based on the digital network seismic waveform of Shandong Province, we calculate the Q values of Qingdao earthquake swarm in 2003 and 2004 through the pulse broadening method in the time domain. Two different methods getting the first half P-wave pulse are compared. Finally, we sum up the applicable conditions of the pulse broadening method and calculation results and obtain the Q values in Qingdao and Jiaodong region.
With the enhancement of observation capabilities and the improvement of observation means, the research of Q value reflecting the earth medium characteristics continues to deepen and develop. In this paper, based on the digital network seismic waveform of Shandong Province, we calculate the Q values of Qingdao earthquake swarm in 2003 and 2004 through the pulse broadening method in the time domain. Two different methods getting the first half P-wave pulse are compared. Finally, we sum up the applicable conditions of the pulse broadening method and calculation results and obtain the Q values in Qingdao and Jiaodong region.
引文
郝召兵,秦静欣.地震波品质因子Q研究进展综述[J].地球物理学进展,2009,24(2) :375-381．
黄才中.中国东部的尾波衰减特征和Q值估计[J].地震学报,1995,17(2) :196-202．
季爱东.山东地区尾波衰减特性研究[J].华北地震科学,2008,26(1) :8-12．
李霞等.胶东半岛及两侧海域尾波Q值分析[J].地震地磁观测与研究,2008,29(2) :14-20．
Ali.Analysis of the seismic coda of local earthquakes as scattered waves[J].Geophys,1969,74,615-631．
Giampiccolo E,Gresta S.Attenuation of body waves in Southeastern Sicily[J].Physics of the Earth and Planetary Interiors,2003,135:267-279．
Elisabetta Giampiccolo,Salvatore D'Amico.Attenuation and source parameters of Shallow Micro earthquakes at Mt.Etna Volcano,Italy[J].BSSA,1987,97(1) :184-197．
Giuseppina Tusa,Stephen D.Malone.Attenuation of short-period P waves at Mount St.Helens[J].BSSA,2004,(4) :1441-1455．
Kjartansson.Constant Q wave propagation and attenuation[J].Geophys,1979,84:4737-4748．
Shearer Peter M,Earle Paul S.The global short-period wavefiled modeled with a Monte Carlo seismic Phonon method[J].Geophys,2004,158:1103-1117．
Liu Zuyuan,Wuenscher M E.Attenuation of body waves in the central New Madrid Seismic Zone[J].BSSA,1994,84(4) :1112-1122．
黄才中.中国东部的尾波衰减特征和Q值估计[J].地震学报,1995,17(2) :196-202．
季爱东.山东地区尾波衰减特性研究[J].华北地震科学,2008,26(1) :8-12．
李霞等.胶东半岛及两侧海域尾波Q值分析[J].地震地磁观测与研究,2008,29(2) :14-20．
Ali.Analysis of the seismic coda of local earthquakes as scattered waves[J].Geophys,1969,74,615-631．
Giampiccolo E,Gresta S.Attenuation of body waves in Southeastern Sicily[J].Physics of the Earth and Planetary Interiors,2003,135:267-279．
Elisabetta Giampiccolo,Salvatore D'Amico.Attenuation and source parameters of Shallow Micro earthquakes at Mt.Etna Volcano,Italy[J].BSSA,1987,97(1) :184-197．
Giuseppina Tusa,Stephen D.Malone.Attenuation of short-period P waves at Mount St.Helens[J].BSSA,2004,(4) :1441-1455．
Kjartansson.Constant Q wave propagation and attenuation[J].Geophys,1979,84:4737-4748．
Shearer Peter M,Earle Paul S.The global short-period wavefiled modeled with a Monte Carlo seismic Phonon method[J].Geophys,2004,158:1103-1117．
Liu Zuyuan,Wuenscher M E.Attenuation of body waves in the central New Madrid Seismic Zone[J].BSSA,1994,84(4) :1112-1122．
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