CAJ | 학술논문

通过对波动方程有限差分正演模拟的透明边界条件的透明度的研究分析，认识到不同介质模型和不同频率成分都对透明边界条件的透明度有影响，其中空气介质模型的透明度最差，岩石介质模型的透明度最好，水介质模型透明边界条件的效果介于空气和岩石之间。透明边界条件在低频时的透明度比高频时好，在频率大于40Hz 时，透明度呈线性减弱趋势。
통과대파동방정유한차분정연모의적투명변계조건적투명도적연구분석，인식도불동개질모형화불동빈솔성분도대투명변계조건적투명도유영향，기중공기개질모형적투명도최차，암석개질모형적투명도최호，수개질모형투명변계조건적효과개우공기화암석지간。투명변계조건재저빈시적투명도비고빈시호，재빈솔대우40Hz 시，투명도정선성감약추세。
A study of the transparency of transparent boundary condition for wave equation modeling using finite different method was carried out. It is concluded that the properties of the elastic media of the model and the frequency of the waves would affect the transparency quality of the boundary conditions. Among the models tested in our study, we found that the effect of the transparent boundary condition is of best for rock media and worst for air medium. In addition, we also found that the transparent boundary condition has a better quality for low frequencies than high frequencies. Our modeling revealed that, for frequencies higher than 40 Hz, the transparency for the boundary condition is linearly declining as frequency increases.