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OALib Journal期刊
ISSN: 2333-9721
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基于高斯束的初至波菲涅尔体地震层析成像
Keywords: 动力学射线追踪,高斯束,菲涅尔体,层析成像,核函数
Abstract:
？在中心射线路径作为唯一已知条件的前提下,利用动力学射线追踪可以方便地实现射线路径上格林函数的计算,但傍轴格林函数则难以计算。高斯束是动力学射线追踪的一个重要应用。在高频假设前提下,本文将高斯束作为源点产生的格林函数,进而实现菲涅尔体地震层析成像中核函数的快速计算,最后应用此方法进行菲涅尔体走时地震层析成像的理论模型试验。与波动方程菲涅尔体走时地震层析成像反演结果的对比表明,在高频假设前提下,基于动力学射线追踪进行菲涅尔体地震层析成像反演是可行的。
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|
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|
| [17] | prattrg.seismicwaveforminversioninthefre-qucncydomain,part1：theoryandverificationinaphysicalscalemodel[j].geophysics.1999,64(3):888-901
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| [18] | shinchangsoo.afrequency-space2-dscalarwaveextrapolatorusingextended25-pointfinite-differenceoperator[j].geophysics.1998,63(1):289-296
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|
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