On ray trajectories and pathtimes for acoustic propagation in a medium with velocity gradients

W. Vetter
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Abstract

The author presents expressions for paths and pathtimes of rays in volume cells of the medium for which the sound velocity can be characterized in terms of a point velocity and a constant velocity gradient. Such parametrization permits the use of relatively large cells in the segmentation of the medium, so that the dimensional complexity of the tomographic formulation and inversion is reduced significantly. With a small number of segmentwise ramping vertical velocities, including velocity reversals, the profile parametrization allows the computational determination of arrival point targeted eigenrays from a given source point to a specified arrival point.<>
在有速度梯度的介质中声传播的射线轨迹和路径
本文提出了声速可以用点速度和等速梯度表示的介质体积单元中射线的路径和路径时的表达式。这样的参数化允许在介质分割中使用相对较大的单元,从而大大降低了层析成像公式和反演的尺寸复杂性。利用少量分段上升的垂直速度,包括速度反转,剖面参数化允许计算确定从给定源点到指定到达点的目标特征射线
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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