利用剪切波分裂研究地壳介质各向异性
|
摘要
地壳介质的各向异性主要是裂隙各向异性,剪切波穿过各向异性介质传播会发生分裂现象.剪切波分裂的偏振特性和时间延迟特性与裂隙介质的几何特性和物理性质有关,可以用来研究地壳应力场及其动态变化.
Seismic anisotropy in the crust is mainly originated from crack-induced anisotropy.Shear-wave will split when it travels through anisotropic media.The polarizations and time-delays of shear-wave splitting are related to the geometrical and physical characteristics of the crustal media.Shear-wave splitting could be adopted to study the stress field in the crust and its dynamic variation.
Seismic anisotropy in the crust is mainly originated from crack-induced anisotropy.Shear-wave will split when it travels through anisotropic media.The polarizations and time-delays of shear-wave splitting are related to the geometrical and physical characteristics of the crustal media.Shear-wave splitting could be adopted to study the stress field in the crust and its dynamic variation.
引文
[1]高原,滕吉文.中国大陆地壳与上地幔地震各向异性研究[J].地球物理学进展,2005,20(1):180-185.
[2]高原,郑斯华.唐山地区剪切波分裂研究(Ⅱ)———相关函数分析法[J].中国地震,1994,10(增刊):11-21.
[3]高原,郑斯华,孙勇.唐山地区地壳裂隙各向异性[J].地震学报,1995,17(3):283-293.
[4]高原,郑斯华,王培德.海南省东方地区1992年小震群剪切波分裂研究[J].地球物理学报,1996,39(2):221-232.
[5]高原,郑斯华,周蕙兰.唐山地区快剪切波偏振图象及其变化[J].地球物理学报,1999,42(2):228-232.
[6]高原,刘希强,梁维,郝平.剪切波分裂系统分析方法(SAM)软件系统[J].中国地震,2004,20(1):101-107.
[7]赖院根,刘启元,陈九辉,等.首都圈地区横波分裂与地壳应力场特征[J].地球物理学报,2006,49:189-196.
[8]雷军,王培德,姚陈,陈运泰.云南剑川近场横波特征及其与构造的关系[J].地球物理学报,1997,40(6)∶791-801.
[9]李白基.云南禄劝地震余震分裂S波的变化[J].地震学报,1996,18(2)∶224-230.
[10]孙勇,郑斯华.唐山地区剪切波分裂研究[J].中国地震,1993,9(1):60-67.
[11]姚陈,王培德,陈运泰.卢龙地区S波偏振与上地壳裂隙各向异性[J].地球物理学报,1992,35(3):305-315.
[12]CRAMPIN S.Seismic-wave propagation throngh a cracked solid:polarization as a possible dilatancy diagnostic[J].Geophys J R.astr Soc,1978,53:467-496.
[13]CRAMPIN S.A review of wave motion in anisotropic and cracked elastic-media[J].Wave Motion,1981,3:343-391.
[14]CRAMPIN S.The new geophysics:shear-wave splitting provides a window into the crack-critical rock mass[J].Leading Edge,2003,22:536-549.
[15]CRAMPIN S.ATKINSON B K.Microcracks in the earth’s crust[J].First Break,1985,3(3):16-20.
[16]CRAMPIN S,EVANS R.Analysis of records of local earthquakes:the Turkish dilatancy projects(TDP1 and TDP2)[J].Geophys J R astr Soc,1985,83:1-16.
[17]CRAMPIN S,GAO Y,CHASTIN S,et al.Speculations on earthquake forecasting[J].Seism Res Lett,2003,74(3):271-273.
[18]EVANS R,BEAMISH D,CRAMPIN S,UCER S B.The Turkish dilatancy project(TDP3):multi-disciplinary studies of a potential earthquake sourceregion[J].Geophys J R astr Soc,1987,91:265-281.
[19]GAJEWSKI D,PSENCIK I.Computation of high-frequency seismic wavefields in 3-D laterally inhomogeneous anisotropic media[J].Geophys J R astrSoc,1987,91:383-411.
[20]GAO Y,WANG P D,ZHENG S H,et al.Temporal changes in shear-wave splitting at an isolated swarm of small earthquakes in 1992 near Dongfang,Hainan Island,Southern China[J].Geophys J Int,1998,135:102-112.
[21]GAO Y,CRAMPIN S.Temporal variation of shear-wave splitting in field and laboratory in China[J].J Appl Geophys,2003,54(3/4):279-287.
[22]GELLER R J,JACKSON D D,KAGAN Y Y,MULARGIA F.Earthquakes cannot be predicted[J].Science,1997,275:1616-1617.
[23]HUDSON J A.Wave speeds and attenuation of elastic waves in material containing cracks[J].Geophys J R astr Soc,1981,64:133-150.
[24]LIU Y,TENG T L,BEN-Zion Y.Systematic analysis of shear-wave splitting in the aftershock zone of the 1999 Chi-Chi earthquake:shallow crustalanisotropy and lack of precursory variations[J].Bull Seism Soc Am,2004,94:2330-2347.
[25]MUNSON C G,THURBER C H,LI Y,OKUBO P G.Crustal shear wave anisotropy in southern Hawaii:spatial and temporal analysis[J].J Geophys Res,1995,100(20):367-377.
[26]PENG Z,BEN-ZION Y.Systematic analysis of crustal anisotropy along the Karadere Düzce branch of the North Anatolian fault[J].Geophys J Int,2004,159:253-274.
[27]SILVER P G.Why is earthquake prediction so difficult?[J].Seism Res Lett,1998,69(2):111-113.
[28]TEANBY N A,KENDALL J M,JONES R H,et al.Stress-induced temporal variations in seismic anisotropy observed in microseismic data[J].GeophysJ Int,2004,156:459-466.
[29]ZHANG Z,SCHWARTZ S Y.Seismic anisotropy in the shallow crust of the Loma Prieta segment of the San Andreas fault system[J].J Geophys Res,1994,99:9651-9661.
[2]高原,郑斯华.唐山地区剪切波分裂研究(Ⅱ)———相关函数分析法[J].中国地震,1994,10(增刊):11-21.
[3]高原,郑斯华,孙勇.唐山地区地壳裂隙各向异性[J].地震学报,1995,17(3):283-293.
[4]高原,郑斯华,王培德.海南省东方地区1992年小震群剪切波分裂研究[J].地球物理学报,1996,39(2):221-232.
[5]高原,郑斯华,周蕙兰.唐山地区快剪切波偏振图象及其变化[J].地球物理学报,1999,42(2):228-232.
[6]高原,刘希强,梁维,郝平.剪切波分裂系统分析方法(SAM)软件系统[J].中国地震,2004,20(1):101-107.
[7]赖院根,刘启元,陈九辉,等.首都圈地区横波分裂与地壳应力场特征[J].地球物理学报,2006,49:189-196.
[8]雷军,王培德,姚陈,陈运泰.云南剑川近场横波特征及其与构造的关系[J].地球物理学报,1997,40(6)∶791-801.
[9]李白基.云南禄劝地震余震分裂S波的变化[J].地震学报,1996,18(2)∶224-230.
[10]孙勇,郑斯华.唐山地区剪切波分裂研究[J].中国地震,1993,9(1):60-67.
[11]姚陈,王培德,陈运泰.卢龙地区S波偏振与上地壳裂隙各向异性[J].地球物理学报,1992,35(3):305-315.
[12]CRAMPIN S.Seismic-wave propagation throngh a cracked solid:polarization as a possible dilatancy diagnostic[J].Geophys J R.astr Soc,1978,53:467-496.
[13]CRAMPIN S.A review of wave motion in anisotropic and cracked elastic-media[J].Wave Motion,1981,3:343-391.
[14]CRAMPIN S.The new geophysics:shear-wave splitting provides a window into the crack-critical rock mass[J].Leading Edge,2003,22:536-549.
[15]CRAMPIN S.ATKINSON B K.Microcracks in the earth’s crust[J].First Break,1985,3(3):16-20.
[16]CRAMPIN S,EVANS R.Analysis of records of local earthquakes:the Turkish dilatancy projects(TDP1 and TDP2)[J].Geophys J R astr Soc,1985,83:1-16.
[17]CRAMPIN S,GAO Y,CHASTIN S,et al.Speculations on earthquake forecasting[J].Seism Res Lett,2003,74(3):271-273.
[18]EVANS R,BEAMISH D,CRAMPIN S,UCER S B.The Turkish dilatancy project(TDP3):multi-disciplinary studies of a potential earthquake sourceregion[J].Geophys J R astr Soc,1987,91:265-281.
[19]GAJEWSKI D,PSENCIK I.Computation of high-frequency seismic wavefields in 3-D laterally inhomogeneous anisotropic media[J].Geophys J R astrSoc,1987,91:383-411.
[20]GAO Y,WANG P D,ZHENG S H,et al.Temporal changes in shear-wave splitting at an isolated swarm of small earthquakes in 1992 near Dongfang,Hainan Island,Southern China[J].Geophys J Int,1998,135:102-112.
[21]GAO Y,CRAMPIN S.Temporal variation of shear-wave splitting in field and laboratory in China[J].J Appl Geophys,2003,54(3/4):279-287.
[22]GELLER R J,JACKSON D D,KAGAN Y Y,MULARGIA F.Earthquakes cannot be predicted[J].Science,1997,275:1616-1617.
[23]HUDSON J A.Wave speeds and attenuation of elastic waves in material containing cracks[J].Geophys J R astr Soc,1981,64:133-150.
[24]LIU Y,TENG T L,BEN-Zion Y.Systematic analysis of shear-wave splitting in the aftershock zone of the 1999 Chi-Chi earthquake:shallow crustalanisotropy and lack of precursory variations[J].Bull Seism Soc Am,2004,94:2330-2347.
[25]MUNSON C G,THURBER C H,LI Y,OKUBO P G.Crustal shear wave anisotropy in southern Hawaii:spatial and temporal analysis[J].J Geophys Res,1995,100(20):367-377.
[26]PENG Z,BEN-ZION Y.Systematic analysis of crustal anisotropy along the Karadere Düzce branch of the North Anatolian fault[J].Geophys J Int,2004,159:253-274.
[27]SILVER P G.Why is earthquake prediction so difficult?[J].Seism Res Lett,1998,69(2):111-113.
[28]TEANBY N A,KENDALL J M,JONES R H,et al.Stress-induced temporal variations in seismic anisotropy observed in microseismic data[J].GeophysJ Int,2004,156:459-466.
[29]ZHANG Z,SCHWARTZ S Y.Seismic anisotropy in the shallow crust of the Loma Prieta segment of the San Andreas fault system[J].J Geophys Res,1994,99:9651-9661.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心