| 各向异性ATI介质剪切位错点源P波远场辐射 |
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| 引用本文： | 蔡晓刚.各向异性ATI介质剪切位错点源P波远场辐射[J].CT理论与应用研究,2011,20(4):433-452. |
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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(ZDJ2010-01); 国家自然科学基金(41104026) |
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| 摘 要： | 假设震源区为ATI介质,传播介质为全空间各向同性介质情况下,给出了剪切位错源P波远场辐射解析表达式,讨论了震源区各向异性对远场P波振幅和震源球的影响。结果表明,震源区裂隙密度,裂隙方位等参数的动态变化导致P波远场辐射花样也随之动态变化,同时也会造成非双力偶百分含量的动态变化。研究认为,在井中对中小地震的非双力偶机制进行...
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| 关 键 词： | 各向异性震源 P波远场辐射 震源球 非双力偶机制 标量地震矩 |
Far-Field P-Wave Radiation Pattern from ATI Shear Dislocation:Theoretical Studies |
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| CAI Xiao-gang Institute of crustal dynamic,China Earthquake Administration,Beijing ,China.Far-Field P-Wave Radiation Pattern from ATI Shear Dislocation:Theoretical Studies[J].Computerized Tomography Theory and Applications,2011,20(4):433-452. |
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| Authors: | CAI Xiao-gang Institute of crustal dynamic China Earthquake Administration Beijing China |
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| Institution: | CAI Xiao-gang Institute of crustal dynamic,China Earthquake Administration,Beijing 100085,China |
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| Abstract: | Suppose that source region is ATI medium and propagation path is isotropic media,analytical representations of far-field P-wave displacement and radiation are given and we discuss the effects of source anisotropy on far-field P-wave displacement and focal sphere.Some results show that crack density,azimuth et al.parameters play an important role in P-wave radiation and lead to non-double-earthquake mechanism.We propose that It maybe a good method which we can directly detect percentage of DC,CLVD and ISO fo... |
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| Keywords: | anisotropic source far-field P-wave radiation focal sphere non-double-couple mechanism scalar moment |
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