| 非均匀粘弹介质中有限元地震数字模型 |
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| 引用本文： | 柯本喜,郭矛,严昌言,范祯祥.非均匀粘弹介质中有限元地震数字模型[J].石油地球物理勘探,1990(3). |
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| 作者姓名： | 柯本喜 郭矛 严昌言 范祯祥 |
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| 作者单位： | 石油地球物理勘探局研究院，石油地球物理勘探局研究院，石油地球物理勘探局研究院，石油地球物理勘探局研究院 |
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| 摘 要： | 本文讨论了粘弹介质的地震波响应。假定介质为块状,且块中纵,横波速度及密度、品质因数横向分段线性连续变化。在此条件下,给出了粘弹波动方程制作时间剖面的数学模型,导出了相应的有限元方程并给出其计算方法(包括刚度矩阵、阻尼矩阵)。模拟某实际水平叠加剖面的仿真结果,展示了该方法的效果和水平。
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| 关 键 词： | 非均匀介质 粘弹波动方程 刚度矩阵 地震模型 |
Finite-element numerical modeling for seismic wave in nonuniform viscoelastic medium |
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| Ke Benxi,Guo Mao,Yan Changyan and Fan Zhenxiang.Finite-element numerical modeling for seismic wave in nonuniform viscoelastic medium[J].Oil Geophysical Prospecting,1990(3). |
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| Authors: | Ke Benxi Guo Mao Yan Changyan and Fan Zhenxiang |
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| Abstract: | Seismic response in viscoelastic medium is discussed here. The assumption is made that P-wave velocity, S-wave velocity, density and Q factor show lateral piecewise linear continuous variations in block media. Under the above assumption, mathematical model for making seismic time section with the use of viscoelastic wave equation is developed; the relevant finite-element wave equation is derived; and the calculation method for the finite-element equation, including stiffness matrix and damping matrix, is given in the paper. The effect of simulating a real horizontal stack section shows that this method is feasible. |
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| Keywords: | nonuniform medium wave equation in viscoelastic medium stiffness matrix seismic model |
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