| 瞬变地震波反射场的综合 |
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| 引用本文： | 阮颖铮.瞬变地震波反射场的综合[J].电子科技大学学报(社会科学版),1991(5). |
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| 作者姓名： | 阮颖铮 |
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| 作者单位： | 电子科技大学微波工程系 四川成都 |
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| 摘 要： | 利用复惠更斯原理和频域分析方法,综合了瞬变地震波在平界面上的反射场,导出了反射波的积分表达式,计算了在部分反射、全反射和临界角过渡区内反射场的瞬变响应波形。在全反射区域,观察到了超前于几何光学反射的横向波(头波)贡献。数值结果表明,这种方法可以简化瞬变波的分析与综合计算,并可直接处理全反射过渡区等波场奇异性的问题。
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| 关 键 词： | 地震波 瞬变场 射线理论 惠更斯原理 |
SYNTHESIS OF REFLECTED FIELDS FOR TRANSIENT SEISMIC WAVES |
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| Ruan Yingzheng.SYNTHESIS OF REFLECTED FIELDS FOR TRANSIENT SEISMIC WAVES[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),1991(5). |
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| Authors: | Ruan Yingzheng |
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| Abstract: | Transient seismic waves reflected at a plane interface are synthesized by complex Huyghens' principle in frequency domain. The integral expression for reflected field is derived, and transient responses of reflected waves are developed in regions of partial, total and critcal reflection. Besides, the lateral wave(head wave) with earlier arrival than geometrical optics reflection is observed. It is shown from numerical results that this method can be used to simplify analyses and syntheses of transient waves and deal with wavefield singularity, such as transition region of critcal angle. |
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| Keywords: | seismic wave transient field ray theory Huyghens' principle |
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