Source Synthesis For Waveform Inversion
Source Synthesis For Waveform Inversion
复制标题
波形反演的源合成
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
W. Symes
中科院分区：
文献类型：
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作者：
W. Symes
长期以来，地震学家一直使用物理和合成的扩展震源，以各种方式提高数据采集和处理的有效性。最近，扩展的合成源已被建议作为一种手段，以大大减少波形反演的计算复杂性。大多数用于波形反演的合成源在某种程度上是随机的。与此相反，我建议一个确定性的选择扩展源，一个最大限度地提高目前的反演反演预测的数据和目标点源记录合成的数据之间的差异。在这个意义上的最佳源合成已被证明是有效的几个非地震反演问题。我将描述的概念，并提出一些初步的证据，它的性能反演反射地震图。
Seismologists have long used extended sources, both physical and synthetic, to enhance the effectiveness of data acquisition and processing in various ways. Recently, extended synthetic sources have been suggested as a means to to substantially reduce the computational complexity of waveform inversion. Most proposed synthetic sources for waveform inversion are random in some way. In contrast, I suggest a deterministic choice of extended source, one that maximizes the difference between the data predicted by the current inversion iterate and the data synthesized from the target point source records. Optimal source synthesis in this sense has proven effective in several non-seismic inverse problems. I will describe the concept, and present some preliminary evidence concerning its performance in inversion of reflection seismograms.