盖州青石岭震群的震源参数特征
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摘要
使用辽宁地区中小地震的数字波形资料,基于Brune圆盘模型计算了2012年2月～2016年12月盖州青石岭震群M_L≥2.5地震的震源动力学参数。结果表明,震群的视应力为0～12bar,视应力随时间整体表现为突升突降中逐渐衰减的变化形态;应力降随震级的增大而增加,这与Nuttli的板内地震增加应力降(ISD)模型较吻合;通过对比1999年岫岩5.4级地震序列中M_L≥3.5地震的震源参数定标率发现,同震级的青石岭地震其应力降要小10倍左右,综合震源区地质构造、震源机制等因素认为,流体可能在青石岭震群的孕育和发生过程中起了重要作用。
In this paper,by using the waveform data of medium and small earthquakes in Liaoning Province,we calculated the dynamic source parameters of 68 M_L≥2.5 earthquakes from February 2012 to 2016,based on the Brune model. The results demonstrated that the range of apparent stresses of the Qingshiling earthquake swarm is 0-12 bar. Apparent stress decreases gradually with the characteristics of rising and dropping rapidly. The stress drop increases with magnitude,which is consistent with the result gained by Nuttli that intraplate earthquake follows the ISD model.Compared with the scaling relationship between stress drop and magnitude of M_L≥2.5 earthquakes in the 1999 Xiuyan M_S5.4 earthquake sequence,the stress drop of medium and small earthquakes in the Qingshiling earthquake swarm are smaller with the same magnitude apparently,about 10 times,that indicates fluid intrusion may play an important role in development and occurring of earthquakes.
In this paper,by using the waveform data of medium and small earthquakes in Liaoning Province,we calculated the dynamic source parameters of 68 M_L≥2.5 earthquakes from February 2012 to 2016,based on the Brune model. The results demonstrated that the range of apparent stresses of the Qingshiling earthquake swarm is 0-12 bar. Apparent stress decreases gradually with the characteristics of rising and dropping rapidly. The stress drop increases with magnitude,which is consistent with the result gained by Nuttli that intraplate earthquake follows the ISD model.Compared with the scaling relationship between stress drop and magnitude of M_L≥2.5 earthquakes in the 1999 Xiuyan M_S5.4 earthquake sequence,the stress drop of medium and small earthquakes in the Qingshiling earthquake swarm are smaller with the same magnitude apparently,about 10 times,that indicates fluid intrusion may play an important role in development and occurring of earthquakes.
引文
陈丽娟、陈继锋、龚丽文等,2017,2017年8月8日四川九寨沟MS7.0地震前甘肃南部地区视应力变化,中国地震,33(4),521~531.
陈学忠、李艳娥,2007,2006年7月4日河北文安MS5.1地震前震中周围地区小震视应力随时间的变化,中国地震,23(4),327~336.
陈学忠、王小平、王林瑛等,2003,地震视应力用于震后趋势快速判定的可能性,国际地震动态,(7),1~4.
戴苗、吴桂桔、刘坚等,2017,三峡库区巴东地震前后视应力变化特征,地震地质,39(4),837~852.
高常波、钟以章,1998,东北输油管道场地断层活动性与地震危险性研究,132~133,北京:地震出版社.
华卫、陈章立、郑斯华等,2010,三峡水库地区震源参数特征研究,地震地质,32(4),533~542.
华卫、陈章立、郑斯华等,2012,水库诱发地震与构造地震震源参数特征差异性研究---以龙滩水库为例,地球物理学进展,27(3),924~935.
康建红、张洪艳、张宇等,2016,2013年吉林前郭强震群序列地震视应力变化特征,地震地磁观测与研究,37(1),1~7.
李发、戈宁、王行舟等,2012,郯庐断裂带南段及邻区中小地震视应力的时空特征研究,地震,32(4),53~61.
李丽、刘剑、吴昊昱等,2015,2015年1月山西介休ML3.3震群发震原因初步研究,中国地震,31(4),647~655.
李艳娥、陈丽娟、王生文等,2015,山东地区地震视应力时空变化特征研究,地震,35(2),80~90.
李艳娥、陈学忠,2007,1999年11月29日岫岩5.4级地震序列震源参数测定及标度关系分析,地震,27(4),59~67.
李艳娥、陈学忠、王恒信,2012,汶川8.0级地震前四川地区地震视应力时空变化特征,地震,32(4),113~122.
刘红桂、王培玲、杨彩霞等,2007,地震视应力在地震预测中的应用,地震学报,29(4),437~445.
龙政强、孙学军、姚宏等,2014,有流体参与作用下的震源参数特征---以广西凌云凤山震群、龙滩库区地震为例,华北地震科学,32(4),10~16.
马杏垣,1989,中国岩石圈动力学地图集,32~33,北京:中国地图出版社.
钱晓东、李琼、秦嘉政,2007,2007年宁洱6.4级地震序列视应力研究,地震研究,30(4),311~317.
乔慧珍、程万正、陈学忠,2006,安宁河-则木河断裂带地震视应力研究,地震研究,29(2),125~130.
秦嘉政、钱晓东,2006,云南地区地震视应力的时间和空间分布研究,地震学报,28(3),221~229.
万波、贾丽华、戴盈磊等,2013,辽东半岛中强地震活动及其与构造相关性,地震地质,35(2),300~314.
王亮、周龙泉、焦明若等,2014,海城盖州地区速度结构和震源位置的联合反演研究,地震,34(3),13~26.
王鹏、郑建常,2014,鲁东地区视应力时空变化特征分析,地震,34(4),70~77.
王鹏、郑建常、刘希强等,2015,郯庐断裂带山东段震源参数及应力状态,地震地质,37(4),966~981.
王琼、陈学忠、王林瑛,2005,岫岩地震序列视应力变化及其预测意义,地震,25(2),91~97.
吴忠良、黄静、林碧苍,2002,中国西部地震视应力的空间分布,地震学报,24(3),293~301.
杨志高、张晓东,2010,紫坪铺水库地区蓄水前后视应力标度率变化研究,地球物理学报,53(12),2861~2868.
易桂喜、龙锋、赵敏等,2016,2014年10月1日越西M5.0地震震源机制与发震构造分析,地震地质,38(4),1124~1136.
易桂喜、闻学泽、辛华等,2011,2008年汶川MS8.0地震前龙门山-岷山构造带的地震活动性参数与地震视应力分布,地球物理学报,54(6),1490~1500.
岳晓媛、武安绪、冯刚等,2015,2012年河北唐山MS4.8地震前首都圈东部视应力时空变化特征,地震,35(2),91~100.
张博、钱蕊、夏彩韵,2017,盖州青石岭地震序列发震构造初探,地震学报,39(6),848~859.
张丽晓、闫俊岗、李艳娥等,2018,晋冀鲁豫交界地区中小地震视应力特征研究,地震,38(1),117~127.
张鹏、丰成君、孙炜峰等,2014,金州断裂带北段深孔地应力测量及其活动性,地球科学(中国地质大学学报),39(10),1295~1306.
郑建常、王鹏、徐长朋等,2016,乳山震群震源谱参数的稳健反演,地球物理学报,59(11),4100~4112.
钟羽云、张帆、张震峰等,2004,应用强震应力降和视应力进行震后趋势快速判定的可能性,防灾减灾工程学报,24(1),8~14.
钟以章、白云,1999,辽东半岛及两侧海域深部构造、活动构造与地震关系研究,华北地震科学,17(2),59~65.
Abe K,1982,Magnitude,Seismic Moment and Apparent Stress for major deep earthquakes,J Phys Earth,30(4),321~330.
Aki K,1966,Generation and propagation of G waves from the Niigata earthquake of June 16,1964.Part 2.Estimation of earthquake moment,released energy,and stress-strain drop from G-wave spectrum,Bull Earthquake Res Inst Tokyo Univ,44,73~88.
Archuleta R J,Cranswick E,Mueller C,et al,1982,Source parameters of the 1980 Mammoth Lakes,California,earthquake sequence,J Geophys Res,87(B6),4595~4607.
Choy G L,Kirby S H,2004,Apparent stress,fault maturity and seismic hazard for normal-fault earthquakes at subduction zones,Geophys J Int,159(3),991~1012,doi:10.1111/j.1365-246X.2004.02449.x.
de Lorenzo S,Di Grazia G,Giampiccolo E,et al,2004,Source and Qpparameters from pulse width inversion of microearthquake data in southeastern Sicily,Italy,J Geophys Res,109(B7),B07308,doi:10.1029/2003JB002577.
Izutani Y,Kanamori H,2001,Scale-dependence of seismic energy-to-moment ratio for strike-slip earthquakes in Japan,Geophys Res Lett,28(20),4007~4010.
Jime'nez A,Garcia J M,Romacho M D,2005,Simultaneous inversion of source parameters and attenuation factor using genetic algorithms,Bull Seismol Soc Am,95(4),1401~1411.
Kanamori H,Rivera L,2004,Static and dynamic scaling relations for earthquakes and their implications for rupture speed and stress drop,Bull Seismol Soc Am,94(1),314~319.
Nuttli O W,1983,Average seismic source-parameter relations for mid-plate earthquakes,Bull Seismol Soc Am,73(2),519~535.
Wu Z L,2001,Scaling of apparent stress from broadband radiated energy catalogue and seismic moment catalogue and its focal mechanism dependence,Earth Planets Space,53(10),943~948.
Wyss M,Brune J N,1968,Seismic moment,Stress,and Source dimensions for earthquakes in the California-Nevada Region,JGeophys Res,73(14),4681~4694.
Wyss M,1970,Stress estimates for South American shallow and deep earthquakes,J Geophys Res,75(8),1529~1544.
Zhong Y Z,Gao C B,2000,Seismic tectonics in the northeast of China,Bull Seis Asso Far East,14(1),70~85.
陈学忠、李艳娥,2007,2006年7月4日河北文安MS5.1地震前震中周围地区小震视应力随时间的变化,中国地震,23(4),327~336.
陈学忠、王小平、王林瑛等,2003,地震视应力用于震后趋势快速判定的可能性,国际地震动态,(7),1~4.
戴苗、吴桂桔、刘坚等,2017,三峡库区巴东地震前后视应力变化特征,地震地质,39(4),837~852.
高常波、钟以章,1998,东北输油管道场地断层活动性与地震危险性研究,132~133,北京:地震出版社.
华卫、陈章立、郑斯华等,2010,三峡水库地区震源参数特征研究,地震地质,32(4),533~542.
华卫、陈章立、郑斯华等,2012,水库诱发地震与构造地震震源参数特征差异性研究---以龙滩水库为例,地球物理学进展,27(3),924~935.
康建红、张洪艳、张宇等,2016,2013年吉林前郭强震群序列地震视应力变化特征,地震地磁观测与研究,37(1),1~7.
李发、戈宁、王行舟等,2012,郯庐断裂带南段及邻区中小地震视应力的时空特征研究,地震,32(4),53~61.
李丽、刘剑、吴昊昱等,2015,2015年1月山西介休ML3.3震群发震原因初步研究,中国地震,31(4),647~655.
李艳娥、陈丽娟、王生文等,2015,山东地区地震视应力时空变化特征研究,地震,35(2),80~90.
李艳娥、陈学忠,2007,1999年11月29日岫岩5.4级地震序列震源参数测定及标度关系分析,地震,27(4),59~67.
李艳娥、陈学忠、王恒信,2012,汶川8.0级地震前四川地区地震视应力时空变化特征,地震,32(4),113~122.
刘红桂、王培玲、杨彩霞等,2007,地震视应力在地震预测中的应用,地震学报,29(4),437~445.
龙政强、孙学军、姚宏等,2014,有流体参与作用下的震源参数特征---以广西凌云凤山震群、龙滩库区地震为例,华北地震科学,32(4),10~16.
马杏垣,1989,中国岩石圈动力学地图集,32~33,北京:中国地图出版社.
钱晓东、李琼、秦嘉政,2007,2007年宁洱6.4级地震序列视应力研究,地震研究,30(4),311~317.
乔慧珍、程万正、陈学忠,2006,安宁河-则木河断裂带地震视应力研究,地震研究,29(2),125~130.
秦嘉政、钱晓东,2006,云南地区地震视应力的时间和空间分布研究,地震学报,28(3),221~229.
万波、贾丽华、戴盈磊等,2013,辽东半岛中强地震活动及其与构造相关性,地震地质,35(2),300~314.
王亮、周龙泉、焦明若等,2014,海城盖州地区速度结构和震源位置的联合反演研究,地震,34(3),13~26.
王鹏、郑建常,2014,鲁东地区视应力时空变化特征分析,地震,34(4),70~77.
王鹏、郑建常、刘希强等,2015,郯庐断裂带山东段震源参数及应力状态,地震地质,37(4),966~981.
王琼、陈学忠、王林瑛,2005,岫岩地震序列视应力变化及其预测意义,地震,25(2),91~97.
吴忠良、黄静、林碧苍,2002,中国西部地震视应力的空间分布,地震学报,24(3),293~301.
杨志高、张晓东,2010,紫坪铺水库地区蓄水前后视应力标度率变化研究,地球物理学报,53(12),2861~2868.
易桂喜、龙锋、赵敏等,2016,2014年10月1日越西M5.0地震震源机制与发震构造分析,地震地质,38(4),1124~1136.
易桂喜、闻学泽、辛华等,2011,2008年汶川MS8.0地震前龙门山-岷山构造带的地震活动性参数与地震视应力分布,地球物理学报,54(6),1490~1500.
岳晓媛、武安绪、冯刚等,2015,2012年河北唐山MS4.8地震前首都圈东部视应力时空变化特征,地震,35(2),91~100.
张博、钱蕊、夏彩韵,2017,盖州青石岭地震序列发震构造初探,地震学报,39(6),848~859.
张丽晓、闫俊岗、李艳娥等,2018,晋冀鲁豫交界地区中小地震视应力特征研究,地震,38(1),117~127.
张鹏、丰成君、孙炜峰等,2014,金州断裂带北段深孔地应力测量及其活动性,地球科学(中国地质大学学报),39(10),1295~1306.
郑建常、王鹏、徐长朋等,2016,乳山震群震源谱参数的稳健反演,地球物理学报,59(11),4100~4112.
钟羽云、张帆、张震峰等,2004,应用强震应力降和视应力进行震后趋势快速判定的可能性,防灾减灾工程学报,24(1),8~14.
钟以章、白云,1999,辽东半岛及两侧海域深部构造、活动构造与地震关系研究,华北地震科学,17(2),59~65.
Abe K,1982,Magnitude,Seismic Moment and Apparent Stress for major deep earthquakes,J Phys Earth,30(4),321~330.
Aki K,1966,Generation and propagation of G waves from the Niigata earthquake of June 16,1964.Part 2.Estimation of earthquake moment,released energy,and stress-strain drop from G-wave spectrum,Bull Earthquake Res Inst Tokyo Univ,44,73~88.
Archuleta R J,Cranswick E,Mueller C,et al,1982,Source parameters of the 1980 Mammoth Lakes,California,earthquake sequence,J Geophys Res,87(B6),4595~4607.
Choy G L,Kirby S H,2004,Apparent stress,fault maturity and seismic hazard for normal-fault earthquakes at subduction zones,Geophys J Int,159(3),991~1012,doi:10.1111/j.1365-246X.2004.02449.x.
de Lorenzo S,Di Grazia G,Giampiccolo E,et al,2004,Source and Qpparameters from pulse width inversion of microearthquake data in southeastern Sicily,Italy,J Geophys Res,109(B7),B07308,doi:10.1029/2003JB002577.
Izutani Y,Kanamori H,2001,Scale-dependence of seismic energy-to-moment ratio for strike-slip earthquakes in Japan,Geophys Res Lett,28(20),4007~4010.
Jime'nez A,Garcia J M,Romacho M D,2005,Simultaneous inversion of source parameters and attenuation factor using genetic algorithms,Bull Seismol Soc Am,95(4),1401~1411.
Kanamori H,Rivera L,2004,Static and dynamic scaling relations for earthquakes and their implications for rupture speed and stress drop,Bull Seismol Soc Am,94(1),314~319.
Nuttli O W,1983,Average seismic source-parameter relations for mid-plate earthquakes,Bull Seismol Soc Am,73(2),519~535.
Wu Z L,2001,Scaling of apparent stress from broadband radiated energy catalogue and seismic moment catalogue and its focal mechanism dependence,Earth Planets Space,53(10),943~948.
Wyss M,Brune J N,1968,Seismic moment,Stress,and Source dimensions for earthquakes in the California-Nevada Region,JGeophys Res,73(14),4681~4694.
Wyss M,1970,Stress estimates for South American shallow and deep earthquakes,J Geophys Res,75(8),1529~1544.
Zhong Y Z,Gao C B,2000,Seismic tectonics in the northeast of China,Bull Seis Asso Far East,14(1),70~85.
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