产生有限差分合成地震图的最佳震源时间函数
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摘要: 震源时间函数在产生有限差分合成地震图中起着十分重要的作用。鉴于此, 我们考虑了5种不同的时间函数的振幅谱。结果表明, 当时间函数的高频信号比主信号携带更多的能量时, 伴随着主信号成分将出现我们所不希望的拖尾现象。本文说明, 在所考虑的几种用于产生有限差分合成地震图的震源时间函数中, 形如f(t)=te-2的时间函数是最佳的。由具有一个覆盖层的半无限空间弹性地球模型, 来产生有限差分合成地震图证实了这个结论。
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[1] Alterman, Z. S. and Karal, F. C., 1968. Propogation of elastic waves in layered media by finite difference methods. Bull., Seis. Soc. Amen, 58, 367——398.
[2] Alterman, Z. S. and Loewenthal, D., 1970. Seismic waves in a quarter and three quarter plane. Geoyhys. J. Roy. astir. Soc., 20, 101——126.
[3] Javaherlan, A., 1982. Elimination of Syurious Reflections From Finale——Difference Synthetic Seismograms vriEh AyylicoEions fo the San Andreaa Fault Zone. Ph. D. thesis, University of Texas at Dallas.
[4] Kanasewlch, E. R., 1975. Time Sequence Analysis in Ceayhysics. The University of Alberta Press.
[5] Kelly, K. R., Ward, R. W., Treitel, S. and Alford, M., 1976. A finite——difference approach. Geophysics, 41, 2——27.[1] Alterman, Z. S. and Karal, F. C., 1968. Propogation of elastic waves in layered media by finite difference methods. Bull., Seis. Soc. Amen, 58, 367——398.
[2] Alterman, Z. S. and Loewenthal, D., 1970. Seismic waves in a quarter and three quarter plane. Geoyhys. J. Roy. astir. Soc., 20, 101——126.
[3] Javaherlan, A., 1982. Elimination of Syurious Reflections From Finale——Difference Synthetic Seismograms vriEh AyylicoEions fo the San Andreaa Fault Zone. Ph. D. thesis, University of Texas at Dallas.
[4] Kanasewlch, E. R., 1975. Time Sequence Analysis in Ceayhysics. The University of Alberta Press.
[5] Kelly, K. R., Ward, R. W., Treitel, S. and Alford, M., 1976. A finite——difference approach. Geophysics, 41, 2——27.
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