Imaging of Lateral Inhomogeneities Using Love Wave Data

Imaging of Lateral Inhomogeneities Using Love Wave Data
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DOI:
10.1190/1.1822275
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发表时间:
1992
期刊:
Seg Technical Program Expanded Abstracts
影响因子:
--
通讯作者:
H. Lee;G. McMechan
H. Lee;G. McMechan
中科院分区:
其他
文献类型:
--
作者:
H. Lee;G. McMechan

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拉夫波传播通道内的不均匀性可能会产生反向散射能量。透射能量和反向散射能量分别对应于正波数和负波数,因此可以通过o-k滤波来分离。随后应用互相关图像条件对波场进行逆时外推,产生包含不均匀性横向位置的图像。
Inhomogeneities within a Love wave’ s propagating channel may generate backscattered energy. The transmitted and backscattered energy correspond to positive and negative wavenumbers, respectively, and so may be separated by o-k filtering. Subsequent reverse-time extrapolation of the wavesields with application of a cross-correlation image condition produces an image containing the lateral position of the inhomogeneities.