台湾集集大地震及其余震的长周期地震动特性
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摘要
用丰富的高质量数字强震记录对台湾集集大地震及余震的长周期地震动特性进行了研究.本文主要研究了长周期地震动的强度随震级、距离及场地条件的变化情况;同时对近断层的长周期地震动特性进行了分析.结果表明,集集大地震及余震的长周期地震动反应谱的形状主要受场地条件和震级控制(D+E类场地的反应谱要比B+C类的宽,震级大的反应谱要比震级小的宽),而受距离影响并不显著;近断层长周期地震动明显受断层活动特性影响:上盘的长周期地震动比下盘的强,北部的比南部的强.
This paper investigates long-period ground motion characteristics of the 1999 Jiji(Chi-Chi), Taiwan, mainshock and aftershocks on the basis of a lot of the high quality digital strong motion records. The study attaches the importance to the variation of strength of the long-period motion with magnitude, distance, and site condition. In the meantime, the near-fault long-period ground motion characteristics are analyzed. The result shows that the shape of the long-period response spectrum is mainly controlled by site condition and magnitude (the spectrum of class D+E is wider than that of class B+C, and the spectrum of larger magnitude is wider than that of smaller magnitude), and the effect of fault distance on the shape is not evident. And the near-fault long-period ground motion characteristic depends on fault activity apparently, that is to say, the long-term ground motion in the hanger is stronger than that in the footwall, and the long-term ground motion in the north is stronger than that in the south.
This paper investigates long-period ground motion characteristics of the 1999 Jiji(Chi-Chi), Taiwan, mainshock and aftershocks on the basis of a lot of the high quality digital strong motion records. The study attaches the importance to the variation of strength of the long-period motion with magnitude, distance, and site condition. In the meantime, the near-fault long-period ground motion characteristics are analyzed. The result shows that the shape of the long-period response spectrum is mainly controlled by site condition and magnitude (the spectrum of class D+E is wider than that of class B+C, and the spectrum of larger magnitude is wider than that of smaller magnitude), and the effect of fault distance on the shape is not evident. And the near-fault long-period ground motion characteristic depends on fault activity apparently, that is to say, the long-term ground motion in the hanger is stronger than that in the footwall, and the long-term ground motion in the north is stronger than that in the south.
引文
[1]张建兴,吴逸民,辛在勒,等.1999.集集大震初始破裂之探讨.http://www.cwb.gov.tw
[1]李元希,吴维毓,石同生,等.2000.九二一集集地震地表变形特性-埤丰桥以东.http://www.ndcnc.gov.cn/
[1]侯进雄,赖典章,费立沅,等.2000.高精度测量在车笼埔活动断层监测与调查上之应用研究九二一地震前后测量结果比较.http://www.ndcnc.gov.cn/
[1]张建兴,吴逸民,辛在勒,等.1999.集集大震初始破裂之探讨.http://www.cwb.gov.tw/
[2]林庆伟,赖文基,黄敏郎,等.九二一大地震成因与断层活动机制.http://kbteq.ascc.net/archive/ncku/des/des01.htm1
康耿豪.2000.921集集地震造成之地表变形模式[D]:[学位论文].台湾:台湾“国立中央大学应用地质研究所”,1~80
王国权.2001.921台湾集集地震近断层地面运动特征[D]:[学位论文].北京:中国地震局地质研究所,1~216
谢礼立,周雍年,胡成祥,等.1990.地震动反应谱的长周期特性[J].地震工程与工程振动,10(1):1~19
周雍年,周正华,于海英.2004.设计反应谱长周期区段的研究[J].地震工程与工程振动,24(2):15~18
ChenYG,ChenWS,LeeJC.2001.Surfaceruptureof1999Chi-ChiearthquakeyieldsinsightsonactivetectonicsofcentralTaiwan[J].BullSeismSocAmer,91(5):977~985
DominguezS,AvouacJP,MichelR.2003.Horizontalcoseismicdeformationofthe1999Chi-ChiearthquakemeasuredfromSPOTsatelliteimages:ImplicationsfortheseismiccyclealongthewesternfoothillsofcentralTaiwan[J].Geo-physRes,108(B2):8-1~8-19
FaccioliE,PaolucciR,ReyJ.2004.Displacementspectraforlongperiods[J].EarthquakeSpectra,20(2):347~375
HuYX,YuYX.2000.Aseismological-engineeringapproachtotheestimationofwideresponsespectrumfordistantearthquake[A].In:KoJM,XuYLed.AdvancesinStructuralDynamics[C].HongKong:ElsevierScienceLtd,(1):193~200
HungJH,SuppeJ.2002.SubsurfacegeometryandkinematicsoftheSani-Chelungputhrustfaults[J].EOSTransAGU,83(22):WPGMSuppl,AbstractSE441E-09
KaoH,ChenWP.2000.TheChi-Chiearthquakesequence:active,out-of-sequencethrustfaultinginTaiwan[J].Science,288(5475):2346~2349
LeeChT,ChengChT,LiaoChW,etal.2001.SiteclassificationofTaiwanfree-fieldstrong-motionstations[J].BullSeismSocAmer,91(5):1283~1297
WangChY,LiChL,SuFCh,etal.2002.Structuralmappingofthe1999Chi-Chiearthquakefault,Taiwanbyseismicreflectionmethods[J].TAO,13(3):211~226
WangChY,ChangChH,YenHY.2000.Aninterpretationofthe1999Chi-ChiearthquakeinTaiwanbasedontheThin-Shinnedthrustmodel[J].TAO,11(3):610~630
YuSB,LeeJF,LaiTCh,etal.2001.Preseismicdeformationandcoseismicdisplacementsassociatedwiththe1999Chi-Chi,Taiwan,earthquake[J].BullSeismSocAmer,91(5):995~1012
[1]李元希,吴维毓,石同生,等.2000.九二一集集地震地表变形特性-埤丰桥以东.http://www.ndcnc.gov.cn/
[1]侯进雄,赖典章,费立沅,等.2000.高精度测量在车笼埔活动断层监测与调查上之应用研究九二一地震前后测量结果比较.http://www.ndcnc.gov.cn/
[1]张建兴,吴逸民,辛在勒,等.1999.集集大震初始破裂之探讨.http://www.cwb.gov.tw/
[2]林庆伟,赖文基,黄敏郎,等.九二一大地震成因与断层活动机制.http://kbteq.ascc.net/archive/ncku/des/des01.htm1
康耿豪.2000.921集集地震造成之地表变形模式[D]:[学位论文].台湾:台湾“国立中央大学应用地质研究所”,1~80
王国权.2001.921台湾集集地震近断层地面运动特征[D]:[学位论文].北京:中国地震局地质研究所,1~216
谢礼立,周雍年,胡成祥,等.1990.地震动反应谱的长周期特性[J].地震工程与工程振动,10(1):1~19
周雍年,周正华,于海英.2004.设计反应谱长周期区段的研究[J].地震工程与工程振动,24(2):15~18
ChenYG,ChenWS,LeeJC.2001.Surfaceruptureof1999Chi-ChiearthquakeyieldsinsightsonactivetectonicsofcentralTaiwan[J].BullSeismSocAmer,91(5):977~985
DominguezS,AvouacJP,MichelR.2003.Horizontalcoseismicdeformationofthe1999Chi-ChiearthquakemeasuredfromSPOTsatelliteimages:ImplicationsfortheseismiccyclealongthewesternfoothillsofcentralTaiwan[J].Geo-physRes,108(B2):8-1~8-19
FaccioliE,PaolucciR,ReyJ.2004.Displacementspectraforlongperiods[J].EarthquakeSpectra,20(2):347~375
HuYX,YuYX.2000.Aseismological-engineeringapproachtotheestimationofwideresponsespectrumfordistantearthquake[A].In:KoJM,XuYLed.AdvancesinStructuralDynamics[C].HongKong:ElsevierScienceLtd,(1):193~200
HungJH,SuppeJ.2002.SubsurfacegeometryandkinematicsoftheSani-Chelungputhrustfaults[J].EOSTransAGU,83(22):WPGMSuppl,AbstractSE441E-09
KaoH,ChenWP.2000.TheChi-Chiearthquakesequence:active,out-of-sequencethrustfaultinginTaiwan[J].Science,288(5475):2346~2349
LeeChT,ChengChT,LiaoChW,etal.2001.SiteclassificationofTaiwanfree-fieldstrong-motionstations[J].BullSeismSocAmer,91(5):1283~1297
WangChY,LiChL,SuFCh,etal.2002.Structuralmappingofthe1999Chi-Chiearthquakefault,Taiwanbyseismicreflectionmethods[J].TAO,13(3):211~226
WangChY,ChangChH,YenHY.2000.Aninterpretationofthe1999Chi-ChiearthquakeinTaiwanbasedontheThin-Shinnedthrustmodel[J].TAO,11(3):610~630
YuSB,LeeJF,LaiTCh,etal.2001.Preseismicdeformationandcoseismicdisplacementsassociatedwiththe1999Chi-Chi,Taiwan,earthquake[J].BullSeismSocAmer,91(5):995~1012
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