辽宁区域地震台网的地壳剪切波分裂研究
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摘要
主要利用辽宁区域地震台网8个台站记录到的1999年6月至2004年12月的波形数据,采用剪切波分裂SAM分析方法,对辽宁地区的剪切波分裂特征进行了研究。发现大部分台站的快剪切波优势偏振方向为NEE(近EW)向,与原地主压应力方向一致,也与华北北部的区域构造应力场方向一致。然而,辽宁中部的SJ台站和东部的KD台站的快剪切波优势偏振方向分别为近NS向和NW向,与其他台站的结果有差异,可能是受到复杂的局部构造的控制和影响,这2个台站的结果还需要更多资料的证实。根据GPS、地震和地球物理等其它资料,对该地区断层的区域分布、主压应力以及剪切波分裂参数的空间分布特征进行了讨论。
Using the seismic data recorded by Liaoning Telemetry Seismic Network(LTSN)of China from June 1999 to December 2004,the study analyzes data of 8 stations by Systematic Analysis Method(SAM)of shear-wave splitting technique. The results show that predominant polarization directions of fast shear-waves at most stations are in strike ENE(nearly E-to-W),consistent to the direction of regional principal compressive stress,and also consistent to the direction of the regional tectonic stress field in the north part of North China. However,the predominant polarization directions of fast shear-waves at station SJ in the middle of Liaoning and station KD in the southeast of Liaoning are in strike nearly N-S and NW,different from other stations,which may be controlled and influenced by the complex local geological structure. However,more data are needed to verify for details at these two stations. Also according to results from GPS,geological and geophysical data,the paper studies the regional distribution of faults and principal compressive stress directions,and discusses the spatial characteristics of shear-wave splitting in this zone.
Using the seismic data recorded by Liaoning Telemetry Seismic Network(LTSN)of China from June 1999 to December 2004,the study analyzes data of 8 stations by Systematic Analysis Method(SAM)of shear-wave splitting technique. The results show that predominant polarization directions of fast shear-waves at most stations are in strike ENE(nearly E-to-W),consistent to the direction of regional principal compressive stress,and also consistent to the direction of the regional tectonic stress field in the north part of North China. However,the predominant polarization directions of fast shear-waves at station SJ in the middle of Liaoning and station KD in the southeast of Liaoning are in strike nearly N-S and NW,different from other stations,which may be controlled and influenced by the complex local geological structure. However,more data are needed to verify for details at these two stations. Also according to results from GPS,geological and geophysical data,the paper studies the regional distribution of faults and principal compressive stress directions,and discusses the spatial characteristics of shear-wave splitting in this zone.
引文
曹凤娟,王连权,张萍,等.2005.岫岩MS5.4地震前后S波分裂研究[J].东北地震研究,21(4):39—44.CAO Feng-juan,WANG Lian-quan,ZHANG Ping,et al.2005.Study on S-wave fission around XiuyanMS5.4earth-quake[J].Seismological Research of Northeast China,21(4):39—44(in Chinese).
高原,郑斯华,孙勇.1995.唐山地区地壳裂隙各向异性[J].地震学报,17(3):283—293.GAO Yuan,ZHENG Si-hua,SUNYong.1995.Crustal crack anisotropy in Tangshan[J].Acta Seismologica Sinica,17(3):283—293(in Chinese).
高原,郑斯华,周慧兰.1999.唐山地区快剪切波偏振图像及其变化[J].地球物理学报,42(2):228—232.GAO Yuan,ZHENG Si-hua,ZHOUHui-lan.1999.Polarization patterns of fast shear wave in Tangshan region and theirvariations[J].Chinese Journal of Geophysics,42(2):228—232(in Chinese).
高原,刘希强,梁维,等.2004.剪切波分裂系统分析方法(SAM)软件系统[J].中国地震,20(1):101—107.GAO Yuan,LIUXi-qiang,LIANG Wei,et al.2004.Systematic analysis method of shear-wave splitting:SAMsoftwaresystem[J].Earthquake Research in China,20(1):101—107(in Chinese).
高原,石玉涛,梁维,等.2008.剪切波分裂系统分析系统SAM(2007):软件系统[J].中国地震,24(4):345—353.GAO Yuan,SHI Yu-tao,LIANG Wei,et al.2008.Systematic analysis method of shear-wave splitting SAM(2007):Examples of application in the regional seismograph networks[J].Earthquake Research in China,24(4):345—353(in Chinese).
高常波,钟以章.2000.1999年辽宁海城-岫岩5.6级地震的地震构造背景和发震构造[J].地震地质,22(4):405—412.GAO Chang-bo,ZHONG Yi-zhang.2000.Geological backguound and seismogenic fault of the Haicheng-XiuyanM5.6earthquake of November29,1999[J].Seismology and Geology,22(4):405—412(in Chinese).
谷光裕,于龙伟,王安东,等.2001.辽宁岫岩5.4级地震临震预测[J].地震,21(1):78—84.GUGuang-yu,YULong-wei,WANG An-dong,et al.2001.The imminent prediction for Xiuyan earthquake withMS5.4in Liaoning Province[J].Earthquake,21(1):78—84(in Chinese).
蒋秀琴,佟晓辉.2001.1999年11月29日辽宁岫岩-海城MS5.4地震综述[J].地震地磁观测与研究,22(2):1—9.JIANG Xiu-qin,TONG Xiao-hui.2001.Synthetic description about Xiuyan-Haicheng,Liaoning earthquek with magni-tude ofMS5.4on November29,1999[J].Seismological and Geomagnetic Observation and Research,22(2):1—9(in Chinese).
孔繁强,林玉祥.1991.辽宁地区垂直形变场特征再研究[J].东北地震研究,7(4):21—27.KONG Fan-qiang,LIN Yu-xiang.1991.The further research on characteristics of the vertical deformation field in Lia-oning area[J].Seismological Research of Northeast China,7(4):21—27(in Chinese).
马杏垣主编.1989.中国岩石圈动力学地图集[M].北京:中国地图出版社.32—33.MA Xing-yuan(ed).1989.Lithospheric Dynamic Atlas of China[M].China Cartographic Publishing House,Bei-jing.32—33(in Chinese).
石玉涛,高原,吴晶,等.2006.云南地区地壳介质各向异性:快剪切波偏振特性的初步研究[J].地震学报,28(6):574—585.SHI Yu-tao,GAO Yuan,WU Jing,et al.2006.Seismic anisotropy of the crust in Yunnan,China:Polarization of fastshear-waves[J].Acta Seismologica Sinica,19(6):620—632.
太龄雪,高原,曹凤娟,等.2008.辽宁1999年岫岩地震的剪切波分裂特征[J].地震学报,30(4):340—354.TAI Ling-xue,GAO Yuan,CAO Feng-juan,et al.2008.Shear-wave splitting before and after the1999Xiuyan earth-quake in Liaoning,China[J].Acta Seismologica Sinica,21(4):344—357.
万波.2000.岫岩-海城5.6级地震地质背景及其发震构造[J].东北地震研究,16(2):27—32.WAN Bo.2000.Seismogeological features and seismogenic structure analysis of Haicheng-XiuyanMS5.6earthquake[J].Seismological Research of Northeast China,16(2):27—32(in Chinese).
王玉莹,佟晓辉,石艳丽,等.2005.新民地震台应变短期异常与地震的关系探讨[J].东北地震研究,21(3):56—61.WANG Yu-ying,TONG Xiao-hui,SHI Yan-li,et al.2005.Study on the relation between the short-term strain anomalyat Xinmin seismic station and earthquakes[J].Seismological Research of Northeast China,21(3):56—61(inChinese).
吴晶,高原,陈运泰,等.2007.首都圈西北部地区地壳介质地震各向异性特征初步研究[J].地球物理学报,50(1):209—220.WU Jing,GAO Yuan,CHEN Yun-tai,et al.2007.Preliminary study of seismic anisotropy in the crust of CathaysiaBlock[J].Chinese Journal of Geophysics,50(1):209—220(in Chinese).
袁金荣,徐菊生,高士钧.1999.利用GPS观测资料反演华北地区现今构造应力场[J].地球学报,20(3):232—238.YUAN Jin-rong,XUJ-sheng,GAO Shi-jun.1999.Back analysis of present tectonic stress field in north China regionusing GPS data[J].Acta Geoscientia Sinica,20(3):232—238(in Chinese).
张静华,李延兴,郭良迁,等.2004.用GPS测量结果研究华北现今构造形变场[J].大地测量与地球动力学,24(3):40—46.ZHANG Jing-hua,LI Yan-xing,GUO Liang-qian,et al.2004.Study of present-day deformation and strain field in NorthChina by use of GPS data[J].2004.Journal of Geodesy and Geodynamics,24(3):40—46(in Chinese).
张萍,蒋秀琴.2000.辽宁地区震源机制解及应力场特征的研究[J].东北地震研究,16(1):1—7.ZHANG Ping,JIANG Xiu-qin.2000.Study of focal mechanism solutions and stress field characteristics in Liaoning re-gion[J].Seismological Research of Northeast China,16(1):1—7(in Chinese).
张萍,蒋秀琴.2001.岫岩-海城MS5.4地震序列的震源机制解及应力场特征[J].地震地磁观测与研究,22(2):76—82.ZHANG Ping,JIANG Xiu-qin.2001.The focal mechanism solutions and the crust stress field characteristics in Xiuy-an-Haicheng(MS5.4)earthquake sequence[J].Seismological and Geomagnetic Observation and Research,22(2):76—82(in Chinese).
郑秀芬,陈朝辉,张春贺.2008.1999年台湾集集地震余震区:嘉义地区地震的剪切波分裂参数随时间变化的研究[J].地球物理学报,51(1):149—157.ZHENG Xiu-fen,CHEN Chao-hui,ZHANG Chun-he.2008.Study on temporal variations of shear-wave splitting in theChiayi area,aftershock zone of1999Chichi earthquake,Taiwan[J].Chinese Journal of Geophys,51(1):149—157(in Chinese).
Crampin S.1978.Seismic-wave propagation through a cracked solid polarization as a possible dilatancy diagnostic[J].Geophys J R Astron Soc,53:467—496.
Crampin S,Atkinson B K.1985.Microcracks in the earth s crust[J].First Break,3(3):16—20.
Crampin S,Gao Y,Peacock S.2008.Stress-forecasting(not predicting)earthquakes:a paradigm shift?[J].Geolo-gy,36(5):427—430.
Crampin S,Peacock S.2005.A review of shear-wave splitting in the compliant crack-critical anisotropic Earth[J].Wave Motion,41:59—77.
Crampin S,Chastin S,Gao Y.2003.Shear-wave splitting in a critical crust:Ⅲ.Preliminary report of multi-variablemeasurements in active tectonics[J].J Appl Geophys,54:265—277.
Gao Y,Crampin S.2006.A further stress-forecast earthquake(with hindsight),where migration of source earthquakescauses anomalies in shear-wave polarizations[J].Tectonophysics,426(3/4):253—262.
Gao Y and Crampin S.2008.Shear-wave splitting and earthquake forecasting[J].Terra Nova,20(6):440—448.
高原,郑斯华,孙勇.1995.唐山地区地壳裂隙各向异性[J].地震学报,17(3):283—293.GAO Yuan,ZHENG Si-hua,SUNYong.1995.Crustal crack anisotropy in Tangshan[J].Acta Seismologica Sinica,17(3):283—293(in Chinese).
高原,郑斯华,周慧兰.1999.唐山地区快剪切波偏振图像及其变化[J].地球物理学报,42(2):228—232.GAO Yuan,ZHENG Si-hua,ZHOUHui-lan.1999.Polarization patterns of fast shear wave in Tangshan region and theirvariations[J].Chinese Journal of Geophysics,42(2):228—232(in Chinese).
高原,刘希强,梁维,等.2004.剪切波分裂系统分析方法(SAM)软件系统[J].中国地震,20(1):101—107.GAO Yuan,LIUXi-qiang,LIANG Wei,et al.2004.Systematic analysis method of shear-wave splitting:SAMsoftwaresystem[J].Earthquake Research in China,20(1):101—107(in Chinese).
高原,石玉涛,梁维,等.2008.剪切波分裂系统分析系统SAM(2007):软件系统[J].中国地震,24(4):345—353.GAO Yuan,SHI Yu-tao,LIANG Wei,et al.2008.Systematic analysis method of shear-wave splitting SAM(2007):Examples of application in the regional seismograph networks[J].Earthquake Research in China,24(4):345—353(in Chinese).
高常波,钟以章.2000.1999年辽宁海城-岫岩5.6级地震的地震构造背景和发震构造[J].地震地质,22(4):405—412.GAO Chang-bo,ZHONG Yi-zhang.2000.Geological backguound and seismogenic fault of the Haicheng-XiuyanM5.6earthquake of November29,1999[J].Seismology and Geology,22(4):405—412(in Chinese).
谷光裕,于龙伟,王安东,等.2001.辽宁岫岩5.4级地震临震预测[J].地震,21(1):78—84.GUGuang-yu,YULong-wei,WANG An-dong,et al.2001.The imminent prediction for Xiuyan earthquake withMS5.4in Liaoning Province[J].Earthquake,21(1):78—84(in Chinese).
蒋秀琴,佟晓辉.2001.1999年11月29日辽宁岫岩-海城MS5.4地震综述[J].地震地磁观测与研究,22(2):1—9.JIANG Xiu-qin,TONG Xiao-hui.2001.Synthetic description about Xiuyan-Haicheng,Liaoning earthquek with magni-tude ofMS5.4on November29,1999[J].Seismological and Geomagnetic Observation and Research,22(2):1—9(in Chinese).
孔繁强,林玉祥.1991.辽宁地区垂直形变场特征再研究[J].东北地震研究,7(4):21—27.KONG Fan-qiang,LIN Yu-xiang.1991.The further research on characteristics of the vertical deformation field in Lia-oning area[J].Seismological Research of Northeast China,7(4):21—27(in Chinese).
马杏垣主编.1989.中国岩石圈动力学地图集[M].北京:中国地图出版社.32—33.MA Xing-yuan(ed).1989.Lithospheric Dynamic Atlas of China[M].China Cartographic Publishing House,Bei-jing.32—33(in Chinese).
石玉涛,高原,吴晶,等.2006.云南地区地壳介质各向异性:快剪切波偏振特性的初步研究[J].地震学报,28(6):574—585.SHI Yu-tao,GAO Yuan,WU Jing,et al.2006.Seismic anisotropy of the crust in Yunnan,China:Polarization of fastshear-waves[J].Acta Seismologica Sinica,19(6):620—632.
太龄雪,高原,曹凤娟,等.2008.辽宁1999年岫岩地震的剪切波分裂特征[J].地震学报,30(4):340—354.TAI Ling-xue,GAO Yuan,CAO Feng-juan,et al.2008.Shear-wave splitting before and after the1999Xiuyan earth-quake in Liaoning,China[J].Acta Seismologica Sinica,21(4):344—357.
万波.2000.岫岩-海城5.6级地震地质背景及其发震构造[J].东北地震研究,16(2):27—32.WAN Bo.2000.Seismogeological features and seismogenic structure analysis of Haicheng-XiuyanMS5.6earthquake[J].Seismological Research of Northeast China,16(2):27—32(in Chinese).
王玉莹,佟晓辉,石艳丽,等.2005.新民地震台应变短期异常与地震的关系探讨[J].东北地震研究,21(3):56—61.WANG Yu-ying,TONG Xiao-hui,SHI Yan-li,et al.2005.Study on the relation between the short-term strain anomalyat Xinmin seismic station and earthquakes[J].Seismological Research of Northeast China,21(3):56—61(inChinese).
吴晶,高原,陈运泰,等.2007.首都圈西北部地区地壳介质地震各向异性特征初步研究[J].地球物理学报,50(1):209—220.WU Jing,GAO Yuan,CHEN Yun-tai,et al.2007.Preliminary study of seismic anisotropy in the crust of CathaysiaBlock[J].Chinese Journal of Geophysics,50(1):209—220(in Chinese).
袁金荣,徐菊生,高士钧.1999.利用GPS观测资料反演华北地区现今构造应力场[J].地球学报,20(3):232—238.YUAN Jin-rong,XUJ-sheng,GAO Shi-jun.1999.Back analysis of present tectonic stress field in north China regionusing GPS data[J].Acta Geoscientia Sinica,20(3):232—238(in Chinese).
张静华,李延兴,郭良迁,等.2004.用GPS测量结果研究华北现今构造形变场[J].大地测量与地球动力学,24(3):40—46.ZHANG Jing-hua,LI Yan-xing,GUO Liang-qian,et al.2004.Study of present-day deformation and strain field in NorthChina by use of GPS data[J].2004.Journal of Geodesy and Geodynamics,24(3):40—46(in Chinese).
张萍,蒋秀琴.2000.辽宁地区震源机制解及应力场特征的研究[J].东北地震研究,16(1):1—7.ZHANG Ping,JIANG Xiu-qin.2000.Study of focal mechanism solutions and stress field characteristics in Liaoning re-gion[J].Seismological Research of Northeast China,16(1):1—7(in Chinese).
张萍,蒋秀琴.2001.岫岩-海城MS5.4地震序列的震源机制解及应力场特征[J].地震地磁观测与研究,22(2):76—82.ZHANG Ping,JIANG Xiu-qin.2001.The focal mechanism solutions and the crust stress field characteristics in Xiuy-an-Haicheng(MS5.4)earthquake sequence[J].Seismological and Geomagnetic Observation and Research,22(2):76—82(in Chinese).
郑秀芬,陈朝辉,张春贺.2008.1999年台湾集集地震余震区:嘉义地区地震的剪切波分裂参数随时间变化的研究[J].地球物理学报,51(1):149—157.ZHENG Xiu-fen,CHEN Chao-hui,ZHANG Chun-he.2008.Study on temporal variations of shear-wave splitting in theChiayi area,aftershock zone of1999Chichi earthquake,Taiwan[J].Chinese Journal of Geophys,51(1):149—157(in Chinese).
Crampin S.1978.Seismic-wave propagation through a cracked solid polarization as a possible dilatancy diagnostic[J].Geophys J R Astron Soc,53:467—496.
Crampin S,Atkinson B K.1985.Microcracks in the earth s crust[J].First Break,3(3):16—20.
Crampin S,Gao Y,Peacock S.2008.Stress-forecasting(not predicting)earthquakes:a paradigm shift?[J].Geolo-gy,36(5):427—430.
Crampin S,Peacock S.2005.A review of shear-wave splitting in the compliant crack-critical anisotropic Earth[J].Wave Motion,41:59—77.
Crampin S,Chastin S,Gao Y.2003.Shear-wave splitting in a critical crust:Ⅲ.Preliminary report of multi-variablemeasurements in active tectonics[J].J Appl Geophys,54:265—277.
Gao Y,Crampin S.2006.A further stress-forecast earthquake(with hindsight),where migration of source earthquakescauses anomalies in shear-wave polarizations[J].Tectonophysics,426(3/4):253—262.
Gao Y and Crampin S.2008.Shear-wave splitting and earthquake forecasting[J].Terra Nova,20(6):440—448.
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