| 裂隙参数对衰减各向异性影响的数值模拟 |
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| 引用本文： | 蔡晓刚.裂隙参数对衰减各向异性影响的数值模拟[J].地震地质,2011,33(3):693-705. |
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| 作者姓名： | 蔡晓刚 |
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| 作者单位： | 中国地震局地壳应力研究所,北京,100085 |
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| 基金项目： | 中国地震局地壳应力研究所基本科研业务专项(ZDJ20101、ZDJ200911); 国家自然科学基金(41104026)共同资助 |
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| 摘 要： | 理论、观测和实验均证实,在地壳和上地幔存在对应力变化敏感的直立裂隙,在整体上呈现方位各向异性.在Hudson裂隙理论基础上,系统全面地数值模拟了裂隙介质几何、物性和弹性波频率等参数对各向异性衰减的影响.结果显示,裂隙密度、裂隙纵横比、泊松比、裂缝填充物、弹性波频率和未破裂岩石母体纵横波速度等对各向异性衰减有着显著影响,...
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| 关 键 词： | 等效介质理论 裂隙密度 各向异性衰减 品质因子 |
THE EFFECT OF CRACK PARAMETERS ON ATTENUATION ANISOTROPY:NUMERICAL MODELING |
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| CAI Xiao-gang.THE EFFECT OF CRACK PARAMETERS ON ATTENUATION ANISOTROPY:NUMERICAL MODELING[J].Seismology and Geology,2011,33(3):693-705. |
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| Authors: | CAI Xiao-gang |
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| Institution: | CAI Xiao-gang(Institute of Crustal Dynamic,China Earthquake Administration,Beijing 100085,China) |
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| Abstract: | Propagation through stress-aligned fluid-filled cracks and other inclusions has been claimed to be cause of azimuthal anisotropy observed in the crust and upper mantle.This paper has examined the behavior of seismic waves attenuation caused by the internal structure of rock mass,and in particular,the internal geometry of the distributions of fluid-filled openings.So a systematic research on crack parameters' effects,such as crack density,crack aspect ratio(the ratio of crack thickness to crack diameter),por... |
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| Keywords: | equivalent media theory crack density attenuation anisotropy quality factor |
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