天然地震折射与反射速度CT的模型实验
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摘要
为提高天然地震折射与反射速度CT的精度,我们运用"走时最小纵横波速度层析成像"与"波形基本解纵横波速度层析成像"相结合的方法,反演各层界面形状及各层纵波、横波速度。反演结果图与"正演地球模型剖面图"基本一致。本文在数学上发展了"层析成像"的内容,提出"波形基本解纵横波速度层析成像"基本概念,是天然地震简单模型实验的初步尝试,偏重于理论研究,其理论和方法有一定参考价值。天然地震比人工地震复杂,模型实验不足之处,与实际应用有距离,后续论文将给予补充并处理实际天然地震资料。
Base on the theory established in which deal with the man-made multilayer medium data,we apply it to the case of natural earthquake by using the principle of minimization of travel time and tomography of fundamental solution of wave equation to invert the interface shape and the velocity of P and S seismic wave’s velocity of each layer.
Base on the theory established in which deal with the man-made multilayer medium data,we apply it to the case of natural earthquake by using the principle of minimization of travel time and tomography of fundamental solution of wave equation to invert the interface shape and the velocity of P and S seismic wave’s velocity of each layer.
引文
[1]吴发恩,唐棠,李凡异,等.石油地震纵横波速度层析成像[J].CT理论与应用研究,2011,20(2):191-209.Wu FE,Tang T,Li FY,et al.Velocity tomography of petroleum by p and s seismic waves[J].CT Theory and Applications,2011,20(2):191-209.
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[3]赵鸿儒,郭铁栓,徐子君,等.工程多波地震勘探[M].北京:地震出版社,1996:13-85.Zhao HR,Guo TS,Xu ZJ,et al.Seismic exploration by multiple waves[M].Beijing:SeismologyPress,1996:13-85.
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[5]Rao Y,Wang YH,Morgan JV.Crosshole seismic wave form tomography-II:Resolution analysis[J].Geophysical Journal International,2006,166(3):1224-1236.
[6]陈立成,许帮保,王大为,等.1994隧道施工掌子面前方层界面层析成像预报[J].计算物理,1994,11(1):68-74.Chen LC,Xu BB,Wang DW,et al.Forcast interfaces before the tunnel face by computertomography[J].Chinese Journal of Computational Physics,1994,11(1):68-74.
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[10]李鹏,周仕勇,陈永顺,等.利用双平面波干涉面波层析成像方法研究山西断陷盆地及鄂尔多斯地台三维速度结构[J].CT理论与应用研究,2010,19(3):47-60.Li P,Zhou SY,Chen YS,et al.3D velocity structure in shanxi graben and ordos from twoplane waves method[J].CT Theory and Applications,2010,19(3):47-60.
[11]王志铄,王椿镛,曾融生,等.华北及邻区地壳上地幔三维速度结构的地震走时层析成像[J].CT理论与应用研究,2008,16(2):15-27.Wang ZS,Wang CY,Zeng RS,et al.Tomographic imaging of P and S wave velocity structuresbeneath North China and its vicinity[J].CT Theory and Applications,2008,17(2):15-27.
[12]赵文津,薛光琦,吴珍汉,等.西藏高原上地幔的精细结构与构造—地震层析成像给出的启示[J].地球物理学报,2004,47(3):451-455.Zhao WJ,Xue GQ,Wu ZH..Fine velocity structure of the upper mantle beneath the Xizang plateaufrom tomography and its geological interpretations[J].Chinese Journal of Geophysics,2004,47(3):451-455.
[13]赵鸿儒,孙进忠,唐文榜,等.全波震相分析[M].北京:地震出版社,1991.Zhao HR,Sun JZ,Tang WB,Analysis of seismic phase for many waves[M].Beijing:SeismologyPress,1991.
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[15]杨文东,金星,李山有,等.地震定位研究及应用综述[J].地震工程与工程振动,2005,25(1):14-20.Yang WD,Jin X,Li SY,et al.Study of seismic location methods[J].Earthquake Engineeringand Engineering Vibration,2005,25(1):14-20.
[16]李尚伟,马世贵.利用自由直角坐标系进行地震定位的方法[J].内陆地震,1990,(2):171-175.Li SW,Ma SG.Earthquake location by free orthogongal coordinates system[J].InlandEarthquake,1990,(2):171-175.
[17]赵旭,李强,刘瑞丰,等.三峡库区地震精定位中确定速度模型的方法[J].地震地磁观测与研究,2009,3O(3):27-35.Zhao X,Li Q,Liu RF,et al.Methods of determining velocity model for precise location inthe Three Gorges Reservoir[J].Seismological and Geomagnetic Observation and Research,2009,30(3):27-35.
[18]中国地震局监测预报司.地震学与地震观测[M].北京:地震出版社,2007:1-102.
[2]Fu SF,Liu BC.Seismology courses[M].Beijing:Seismology Press,1991.
[3]赵鸿儒,郭铁栓,徐子君,等.工程多波地震勘探[M].北京:地震出版社,1996:13-85.Zhao HR,Guo TS,Xu ZJ,et al.Seismic exploration by multiple waves[M].Beijing:SeismologyPress,1996:13-85.
[4]Wang YH,Rao Y.Crosshole seismic waveform tomography-I:Strategy for real dataapplication[J].Geophysical Journal International,2006,166(3):1224-1236.
[5]Rao Y,Wang YH,Morgan JV.Crosshole seismic wave form tomography-II:Resolution analysis[J].Geophysical Journal International,2006,166(3):1224-1236.
[6]陈立成,许帮保,王大为,等.1994隧道施工掌子面前方层界面层析成像预报[J].计算物理,1994,11(1):68-74.Chen LC,Xu BB,Wang DW,et al.Forcast interfaces before the tunnel face by computertomography[J].Chinese Journal of Computational Physics,1994,11(1):68-74.
[7]陈立成.层析成像的数学方法与应用[M].成都:西南交通大学出版社,1994:6-10.Chen LC.Mathematical methods of computer tomography and its applications[M].Chengdu:Southwest Jiaotong University Press,1994:6-10.
[8]杨文采.地球物理反演和地震层析成像[M].北京:地质出版社,1989:1-14.Yang WC.Geophysicak inversion and seismic tomography[M].Beijing:Geological PublishingHouse,1989:1-14.
[9]张朋,张兆田.几种CT图像重建算法的比较[C]//第九届中国体视学会与图像分析学术会议,2001:63-64.Zhang P,Zhang ZT.Research and comparison of several CT reconstruction algorithms[C]//Proceedings of 9th conference of the Chinese society for stereology,2001:63-64.
[10]李鹏,周仕勇,陈永顺,等.利用双平面波干涉面波层析成像方法研究山西断陷盆地及鄂尔多斯地台三维速度结构[J].CT理论与应用研究,2010,19(3):47-60.Li P,Zhou SY,Chen YS,et al.3D velocity structure in shanxi graben and ordos from twoplane waves method[J].CT Theory and Applications,2010,19(3):47-60.
[11]王志铄,王椿镛,曾融生,等.华北及邻区地壳上地幔三维速度结构的地震走时层析成像[J].CT理论与应用研究,2008,16(2):15-27.Wang ZS,Wang CY,Zeng RS,et al.Tomographic imaging of P and S wave velocity structuresbeneath North China and its vicinity[J].CT Theory and Applications,2008,17(2):15-27.
[12]赵文津,薛光琦,吴珍汉,等.西藏高原上地幔的精细结构与构造—地震层析成像给出的启示[J].地球物理学报,2004,47(3):451-455.Zhao WJ,Xue GQ,Wu ZH..Fine velocity structure of the upper mantle beneath the Xizang plateaufrom tomography and its geological interpretations[J].Chinese Journal of Geophysics,2004,47(3):451-455.
[13]赵鸿儒,孙进忠,唐文榜,等.全波震相分析[M].北京:地震出版社,1991.Zhao HR,Sun JZ,Tang WB,Analysis of seismic phase for many waves[M].Beijing:SeismologyPress,1991.
[14]Lomnitz C.地震定位的三条原理[J].世界地震译丛,2006(5):44-52.Lomnitz C.Three theorems of earthquake location[J].Translated World Seismology,2006(5):44-52.
[15]杨文东,金星,李山有,等.地震定位研究及应用综述[J].地震工程与工程振动,2005,25(1):14-20.Yang WD,Jin X,Li SY,et al.Study of seismic location methods[J].Earthquake Engineeringand Engineering Vibration,2005,25(1):14-20.
[16]李尚伟,马世贵.利用自由直角坐标系进行地震定位的方法[J].内陆地震,1990,(2):171-175.Li SW,Ma SG.Earthquake location by free orthogongal coordinates system[J].InlandEarthquake,1990,(2):171-175.
[17]赵旭,李强,刘瑞丰,等.三峡库区地震精定位中确定速度模型的方法[J].地震地磁观测与研究,2009,3O(3):27-35.Zhao X,Li Q,Liu RF,et al.Methods of determining velocity model for precise location inthe Three Gorges Reservoir[J].Seismological and Geomagnetic Observation and Research,2009,30(3):27-35.
[18]中国地震局监测预报司.地震学与地震观测[M].北京:地震出版社,2007:1-102.
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