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用加里津方法推导了二维线性流变体内波传播的有限元方程,方程内包含了边界项,使得处理人工边界影响有较好的结果.同时考虑了其它一些因素,例如,吸收介质、爆炸源、自激自收等.实例表明,作者在仿真性方面的努力是成功的,计算的垂直地震剖面理论地震图质量比较好,结果也显示了地表低速层对地表水平记录剖面的干扰.
The finite element equation of two-dimensional linear rheological wave propagation was deduced by using the Garrett method. The boundary element was included in the equation, which made the result of dealing with the artificial boundary effect better. Other factors considered, such as absorption media, sources of explosions, self-motivation, etc. The examples show that the author’s efforts in simulation are successful. The computed vertical seismic section theory shows that the quality of seismic maps is good, and the results also show that the low velocity surface layer interferes with the horizontal record of the surface.