基于地倾斜数据的九寨沟Ms7.0地震旋转运动场构建
|
摘要
过去几十年由于对地面旋转运动认识的不足以及直接测量旋转分量存在实际困难,所以一直忽视了地震旋转分量的观测和研究.目前国内尚缺乏地震旋转量直接测量的工作,文章尝试讨论从地倾斜资料中获得地震旋转量的可能性.基于均匀全空间弹性波场的位移公式,推导了剪切位错源在水平面产生的旋转运动场,对比分析了三分量平移运动和旋转运动近、中、远场的特征.并根据自由表面旋转量与倾斜量的对应关系,获得了间接构建分层半空间中旋转运动场的方法.最后计算出2017年8月8日四川九寨沟Ms7.0地震产生的理论旋转运动场,结果表明九寨沟Ms7.0地震产生的旋转运动场集中在震中附近约150km范围内,主要分布在近垂直于断层走向的区域.自由边界的存在对整个地震旋转运动场有衰减作用,特别是在旋转分量的能量优势方向衰减剧烈.通过实际地倾斜数据与理论旋转运动场的对比,发现特别是在远场区域,实际资料与理论计算结果的趋势性基本一致.表明了可以尝试从地倾斜资料中获得地震旋转运动水平分量,为完整描述地下介质的运动特征提供更丰富的信息.
引文
崔庆谷,杨星,杨跃文.2014.水管仪、垂直摆及水平摆高频段记录数据差异的对比.大地测量与地球动力学,34:175-178
董兴鹏,彭愿,吴阿丹,王鹏伟.2013.日本和台湾近场区地面旋转运动研究.地球物理学进展,28:2300-2308
房立华,吴建平,苏金蓉,王毛毛,蒋策,范莉萍,王未来,王长在,谭夏露.2018.四川九寨沟Ms7.0地震主震及其余震序列精定位.科学通报,63:649-662
顾浩鼎,陈运泰.1988.旋转在地震学中的意义.东北地震研究,4:1-9
顾浩鼎,陈运泰.1997.旋转运动、旋转矩定律及弹性介质动力学关系.科学,49:37-39
谢祖军,郑勇,姚华建,房立华,张勇,刘成利,王毛毛,单斌,张会平,任俊杰,季灵运,宋美琴.2018.2017年九寨沟Ms7.0地震震源性质及发震构造初步分析.中国科学:地球科学,48:79-92
熊先保,林立峰,杨婕.2013.水管倾斜仪与摆式倾斜仪抗干扰能力分析.华南地震,33:34-40
杨玲英,崔庆谷,毛先进,杨海鹏,张源,白世达.2012.云龙地震台水管倾斜与水平摆倾斜仪同震响应对比分析.地震研究,35:48-52
杨宜海.2014.用接收函数方法研究川滇地区地壳上地幔结构.硕士论文.成都:成都理工大学
张旭,冯万鹏,许力生,李春来.2017.2017年九寨沟Ms7.0级地震震源过程反演与烈度估计.地球物理学报,60:4105-4116
张勇,许力生,陈运泰,刘瑞丰.2014.2014年8月3日云南鲁甸Mw6.1(Ms6.5)地震破裂过程.地球物理学报,57:3052-3059
Aki K,Richards P G.2002.Quantitative Seismology.2nd ed.California:University Science Books
Bernauer M,Fichtner A,Igel H.2014.Reducing nonuniqueness in finite source inversion using rotational ground motions.J Geophys Res-Solid Earth,119:4860-4875
Bouchon M,Aki K.1982.Strain,Tilt,and rotation associated with strong ground motion in the vicinity of earthquake faults.Bull Seismol Soc Amer,72:1717-1738
Cochard A,Igel H,Schuberth B,Suryanto W,Velikoseltsev A,Schreiber U,Wassermann J,Scherbaum F,Vollmer D.2006.Rotational motions in seismology:Theory,observation,simulation.In:Teisseyre R,Takeo M,Majewski E,eds.Earthquake Source Asymmetry,Structural Media and Rotation Effects.New York:Springer Verlag.391-412
Donner S,Bernauer M,Igel H.2016.Inversion for seismic moment tensors combining translational and rotational ground motions.Geophys J Int,207:562-570
Feng X,Zhang H.2018.Exact closed-form solutions for Lamb’s problem.Geophys J Int,214:444-459
Hadziioannou C,Gaebler P,Schreiber U,Wassermann J,Igel H.2012.Examining ambient noise using colocated measurements of rotational and translational motion.J Seismol,16:787-796
Haskell N A.1953.The dispersion of surface waves on multilayered media.Bull Seismol Soc Amer,43:17-34
Huang B S,Liu C C,Lin C R,Wu C F,Lee W H.2006.Measuring midand near-field rotational ground motions in Taiwan.AGU Fall Meeting Abstracts,San Francisco
Igel H,Schreiber U,Flaws A,Schuberth B,Velikoseltsev A,Cochard A.2005.Rotational motions induced by the M8.1 Tokachi-oki earthquake,September 25,2003.Geophys Res Lett,32:L08309
Igel H,Cochard A,Wassermann J,Flaws A,Schreiber U,Velikoseltsev A,Pham Dinh N.2007.Broad-band observations of earthquakeinduced rotational ground motions.Geophys J Int,168:182-196
Jaroszewicz L R,Kurzych A,Krajewski Z,Mar?P,Kowalski J K,Bobra P,Zembaty Z,Sakowicz B,Jankowski R.2016.Review of the usefulness of various rotational seismometers with laboratory results of Fibre-Optic ones tested for engineering applications.Sensors,16:2161
Kennett B L N,Engdahl E R.1991.Traveltimes for global earthquake location and phase identification.Geophys J Int,105:429-465
Lee W H K,Huang B S,Langston C A,Lin C J,Liu C C,Shin T C,Teng T L,Wu C F.2009.Review:Progress in rotational groundmotion observations from explosions and local earthquakes in Taiwan.Bull Seismol Soc Am,99:958-967
Li H N,Sun L Y,Wang S Y.2004.Improved approach for obtaining rotational components of seismic motion.Nucl Eng Des,232:131-137
Reinwald M,Bernauer M,Igel H,Donner S.2016.Improved finitesource inversion through joint measurements of rotational and translational ground motions:A numerical study.Solid Earth,7:1467-1477
Suryanto W.2006.Rotational motions in seismology,theory and application.Doctoral Dissertation.Munich:University of Munich
Takeo M.1998.Ground rotational motions recorded in near-source region of earthquakes.Geophys Res Lett,25:789-792
Takeo M,Ito H M.1997.What can be learned from rotational motions excited by earthquakes?Geophys J Int,129:319-329
Trifunac M D,Todorovska M I.2001.A note on the useable dynamic range of accelerographs recording translation.Soil Dyn Earthq Eng,21:275-286
Trifunac M D.2009.Review:Rotations in structural response.Bull Seismol Soc Am,99:968-979
Wang H,Igel H,Gallovic F,Cochard A.2009.Source and basin effects on rotational ground motions:Comparison with translations.Bull Seismol Soc Am,99:1162-1173
Wang R.1999.A simple orthonormalization for stable and efficient computation of Green’s function.Bull Seismol Soc Amer,89:733-741
董兴鹏,彭愿,吴阿丹,王鹏伟.2013.日本和台湾近场区地面旋转运动研究.地球物理学进展,28:2300-2308
房立华,吴建平,苏金蓉,王毛毛,蒋策,范莉萍,王未来,王长在,谭夏露.2018.四川九寨沟Ms7.0地震主震及其余震序列精定位.科学通报,63:649-662
顾浩鼎,陈运泰.1988.旋转在地震学中的意义.东北地震研究,4:1-9
顾浩鼎,陈运泰.1997.旋转运动、旋转矩定律及弹性介质动力学关系.科学,49:37-39
谢祖军,郑勇,姚华建,房立华,张勇,刘成利,王毛毛,单斌,张会平,任俊杰,季灵运,宋美琴.2018.2017年九寨沟Ms7.0地震震源性质及发震构造初步分析.中国科学:地球科学,48:79-92
熊先保,林立峰,杨婕.2013.水管倾斜仪与摆式倾斜仪抗干扰能力分析.华南地震,33:34-40
杨玲英,崔庆谷,毛先进,杨海鹏,张源,白世达.2012.云龙地震台水管倾斜与水平摆倾斜仪同震响应对比分析.地震研究,35:48-52
杨宜海.2014.用接收函数方法研究川滇地区地壳上地幔结构.硕士论文.成都:成都理工大学
张旭,冯万鹏,许力生,李春来.2017.2017年九寨沟Ms7.0级地震震源过程反演与烈度估计.地球物理学报,60:4105-4116
张勇,许力生,陈运泰,刘瑞丰.2014.2014年8月3日云南鲁甸Mw6.1(Ms6.5)地震破裂过程.地球物理学报,57:3052-3059
Aki K,Richards P G.2002.Quantitative Seismology.2nd ed.California:University Science Books
Bernauer M,Fichtner A,Igel H.2014.Reducing nonuniqueness in finite source inversion using rotational ground motions.J Geophys Res-Solid Earth,119:4860-4875
Bouchon M,Aki K.1982.Strain,Tilt,and rotation associated with strong ground motion in the vicinity of earthquake faults.Bull Seismol Soc Amer,72:1717-1738
Cochard A,Igel H,Schuberth B,Suryanto W,Velikoseltsev A,Schreiber U,Wassermann J,Scherbaum F,Vollmer D.2006.Rotational motions in seismology:Theory,observation,simulation.In:Teisseyre R,Takeo M,Majewski E,eds.Earthquake Source Asymmetry,Structural Media and Rotation Effects.New York:Springer Verlag.391-412
Donner S,Bernauer M,Igel H.2016.Inversion for seismic moment tensors combining translational and rotational ground motions.Geophys J Int,207:562-570
Feng X,Zhang H.2018.Exact closed-form solutions for Lamb’s problem.Geophys J Int,214:444-459
Hadziioannou C,Gaebler P,Schreiber U,Wassermann J,Igel H.2012.Examining ambient noise using colocated measurements of rotational and translational motion.J Seismol,16:787-796
Haskell N A.1953.The dispersion of surface waves on multilayered media.Bull Seismol Soc Amer,43:17-34
Huang B S,Liu C C,Lin C R,Wu C F,Lee W H.2006.Measuring midand near-field rotational ground motions in Taiwan.AGU Fall Meeting Abstracts,San Francisco
Igel H,Schreiber U,Flaws A,Schuberth B,Velikoseltsev A,Cochard A.2005.Rotational motions induced by the M8.1 Tokachi-oki earthquake,September 25,2003.Geophys Res Lett,32:L08309
Igel H,Cochard A,Wassermann J,Flaws A,Schreiber U,Velikoseltsev A,Pham Dinh N.2007.Broad-band observations of earthquakeinduced rotational ground motions.Geophys J Int,168:182-196
Jaroszewicz L R,Kurzych A,Krajewski Z,Mar?P,Kowalski J K,Bobra P,Zembaty Z,Sakowicz B,Jankowski R.2016.Review of the usefulness of various rotational seismometers with laboratory results of Fibre-Optic ones tested for engineering applications.Sensors,16:2161
Kennett B L N,Engdahl E R.1991.Traveltimes for global earthquake location and phase identification.Geophys J Int,105:429-465
Lee W H K,Huang B S,Langston C A,Lin C J,Liu C C,Shin T C,Teng T L,Wu C F.2009.Review:Progress in rotational groundmotion observations from explosions and local earthquakes in Taiwan.Bull Seismol Soc Am,99:958-967
Li H N,Sun L Y,Wang S Y.2004.Improved approach for obtaining rotational components of seismic motion.Nucl Eng Des,232:131-137
Reinwald M,Bernauer M,Igel H,Donner S.2016.Improved finitesource inversion through joint measurements of rotational and translational ground motions:A numerical study.Solid Earth,7:1467-1477
Suryanto W.2006.Rotational motions in seismology,theory and application.Doctoral Dissertation.Munich:University of Munich
Takeo M.1998.Ground rotational motions recorded in near-source region of earthquakes.Geophys Res Lett,25:789-792
Takeo M,Ito H M.1997.What can be learned from rotational motions excited by earthquakes?Geophys J Int,129:319-329
Trifunac M D,Todorovska M I.2001.A note on the useable dynamic range of accelerographs recording translation.Soil Dyn Earthq Eng,21:275-286
Trifunac M D.2009.Review:Rotations in structural response.Bull Seismol Soc Am,99:968-979
Wang H,Igel H,Gallovic F,Cochard A.2009.Source and basin effects on rotational ground motions:Comparison with translations.Bull Seismol Soc Am,99:1162-1173
Wang R.1999.A simple orthonormalization for stable and efficient computation of Green’s function.Bull Seismol Soc Amer,89:733-741