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A scheme for estimating the location and tangential plane of a reflector

机译:一种估计反射器位置和切平面的方案

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Magmatic reflectors have been detected beneath some volcanic regions by analysing some reflection phases of seismograms. In this letter we consider a problem to determine the location and tangential plane of such a reflector from the ray parameter, back-azimuth and travel time of a reflection phase, and present a scheme to solve it. It is then shown that the problem is essentially a one-dimensional root-finding problem whose independent variable is only the depth of the reflection point, and thus it can be solved by a line search method such as the one-dimensional grid search. While homogeneous velocity structure models have been used in the conventional analyses, the present scheme employs a vertically inhomogeneous one and can also easily treat converted phases at the reflector.
机译:通过分析地震图的某些反射相位,已经在某些火山区下方发现了岩浆反射器。在这封信中,我们考虑了一个问题,即根据射线参数,反射相的后方位角和传播时间来确定此类反射器的位置和切平面,并提出解决方案。然后表明,该问题本质上是一维寻根问题,其独立变量仅是反射点的深度,因此可以通过诸如一维网格搜索的线搜索方法来解决。尽管在常规分析中已经使用了均匀速度结构模型,但是本方案采用了垂直不均匀的模型,并且还可以轻松地处理反射器处的转换相。

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