Analysis of Scale Exaggeration on Seismic Profiles (1)
Analysis of Scale Exaggeration on Seismic Profiles (1)
复制标题
地震剖面尺度放大分析（一）
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
D. Stone
中科院分区：
文献类型：
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作者：
D. Stone
地震剖面已成为解释构造几何形态和样式的重要手段。然而，在陡倾角和复杂地质结构的地区，这些剖面往往产生扭曲的结构视图，由于垂直或水平夸大。如果没有认识到这种夸大的影响，可能会导致地质误解。落基山脉中部盆地的地震剖面图说明了显著的比例放大所产生的几何失真。为了帮助分析这些配置文件，已构建了三个诺模图。列线图以图形方式显示了夸大因子、夸大倾角、未夸大倾角和校正因子之间的关系，校正因子是从夸大的正交厚度与真实正交厚度的比值得出的。利用水平尺度的知识，诺模图还可用于估计陡倾角和均匀地层厚度区域中夸大剖面上的平均速度。
Seismic profiles have become an important medium for illustrating interpreted structural geometry and style. In areas of steep dip and complex geologic structure, however, these profiles often yield distorted structural views due to vertical or horizontal exaggeration. Geological misinterpretation may result if the effects of this exaggeration are not recognized. Seismic profiles from the central Rocky Mountain basins illustrate the geometrical distortion produced by significant scale exaggeration. To assist in analysis of these profiles, three nomograms have been constructed. The nomograms show graphically the relationships between exaggeration factors, exaggerated dips, unexaggerated dips, and correction factors which are derived from the ratio of exaggerated orthogonal thicknesses to true orthogonal thicknesses. With knowledge of the horizontal scale, the nomograms also can be used to estimate average velocities on exaggerated profiles in areas of steep dip and uniform stratigraphic thicknesses.