与频率相关的各向异性横波分裂参数提取算法
Keywords: 地震合成记录,与频率相关的各向异性,矢量褶积模型,横波分裂
Abstract:
？在地震频率范围内,含较大裂缝多孔岩石的各向异性参数表现出频率相关性。本文基于矢量褶积模型建立了分析多分量vsp数据的与频率相关各向异性的横波分裂参数提取算法。该算法可以在频域中针对单个频率提取横波各向异性参数(快横波的极化方向以及快、慢横波的时差),避免了传统算法中分段滤波可能带来的误差。通过对地震合成记录的数值分析,证明了该算法的可行性和正确性,并与传统算法结果进行了比较。结果显示,与频率相关的各向异性横波分裂参数可以从地震数据中提取。
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