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首页> 外文期刊>Seismological Research Letters >Thirty Years of Confusion around 'Scattering Q'?
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Thirty Years of Confusion around 'Scattering Q'?

机译：关于“散射Q”的三十年困惑？

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摘要

The past 30 years have seen vast advances in seismic instrumentation, computing infrastructure, and methodology. In particular, an impressive concept of the frequency-dependent attenuation quality, Q(f), was created, followed by a dazzling array of related theories and models. However, revisiting some of its original postulates still shows that theoretical models may have run somewhat ahead of the observational constraints. Many presentations of Q(f) have been influenced by the prevalence of particular models, especially those based on random scattering. This led to the well-known apparent character of Q(f) and excessive complexity of its interpretations, which start from unrealistic assumptions about the wavefield and then justify them in retrospect. To regain clarity, I suggest abandoning the use of Q for scattering and reviewing some of the key datasets in an assumption-free and data-driven manner. Initial efforts in this direction show that frequency-dependent Q may not be nearly as widespread as currently thought. These points are briefly discussed below.
机译：在过去的30年中，地震仪器，计算基础设施和方法学取得了巨大进步。特别是，创建了一个令人印象深刻的概念，即随频率变化的衰减质量Q（f），随后是一系列令人眼花related乱的相关理论和模型。然而，重新审视其某些原始假设仍然表明，理论模型可能在观测约束之前有所发展。 Q（f）的许多表示受到特定模型的流行的影响，尤其是那些基于随机散射的模型。这导致了Q（f）的众所周知的表观特征及其解释的过度复杂性，这是从对波场的不切实际的假设开始的，然后进行回顾。为了恢复清晰，我建议放弃使用Q进行散布，并以无假设和数据驱动的方式查看一些关键数据集。在这个方向上的初步努力表明，频率相关的Q可能不像当前所想的那么广泛。这些要点将在下面简要讨论。

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