Theory of seismic diffractions
Theory of seismic diffractions
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DOI：
10.1190/1.9781560802617
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
K. Klem-Musatov;F. Hron;L. Lines
中科院分区：
文献类型：
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作者：
K. Klem-Musatov;F. Hron;L. Lines
这本书致力于一个重要方面的发展的物理基础的地震方法-理论的边缘衍射现象。当规则波的反射/透射条件发生急剧变化时，就会出现这种现象。虽然这些现象引起了许多科学家的注意，几十年来，他们的真实的影响的分辨率能力的地震方法是真正理解，而最近由于解释地震数据在块体结构。显然，不发展边缘绕射现象的理论，就不可能发展出研究这种结构的地震方法。后者是本书的目的。地震法是以连续介质力学的基本定律为基础的。这些定律描述了微观水平上的波场行为，即，以运动微分方程的形式。在某些初始条件或边界条件下对这些方程进行积分，可以获得给定情况下波场的所有必要信息。然而，地震方法的工作基础不仅包括运动微分方程本身，而且还包括它们的解的一些普遍和足够简单的结果，这些结果以物理原理和定律的形式表达出来。后者包括波的概念、费马原理、能流守恒定律和反射/透射定律。从本质上讲，这些定律和原理必须形成一个概念体系，足以解决某些类型的典型解释问题。实际上，这些原理和规律构成了地震法的物理基础。
This book is devoted to one important aspect of development of physical foundations of the seismic method — the theory of edge diffraction phenomena. Thoese phenomena occur when conditions of the regular wave reflection/transmission change sharply. Though these phenomena drew the attention of many scientist for many decades, their real influence on the resolution ability of the seismic method was truly understood rather recently due to interpretation of seismic data in block structures. Clearly, to develop seismic method for investigation of such structures without developing the theory of edge diffraction phenomena is impossible. The latter is the aim of this book. The seismic method is based on the fundamental laws of continuum mechanics. These laws describe the behavior of wavefields on the microscopic level, i.e., in the form of differential equations of motion. Integrating these equations under some initial conditions or boundary conditions, makes possible acquisition of all necessary information on the wavefield in the given situation. However, the working base of the seismic method consists of not only the differential equations of motion themselves but of some general and simple enough consequences of their solutions, which are formulated in the form of physical principles and l aws. The latter include the concepts of wave, Fermat’s principle, the law of conservation of the energy flux, and the reflection/transmission laws. Essentially these laws and principles must form a system of concepts sufficient for the solution of some class of typical interpretation problems. In fact, these principles and laws form the physical fo ndation of the seismic method.