Modified Kolsky model for seismic attenuation and dispersion
Modified Kolsky model for seismic attenuation and dispersion
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DOI：
10.1088/1742-2132/1/3/003
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发表时间：
2004-09
影响因子：
1.4
通讯作者：
Yanghua Wang;Jian Guo
中科院分区：
文献类型：
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作者：
Yanghua Wang;Jian Guo
地震波的振幅和分辨率随深度的降低，即所谓的地球Q效应，可以用频率相关的振幅衰减和速度色散来方便地定义。在本文中，我们修改了Kolsky的（1953应力波在固体（牛津：克拉伦登））衰减-色散模型，使其能够准确地表示地震带内的速度色散。这样的修正至少可以带来两个好处：(1)在随后的反Q滤波中进行精确的相位校正；(2)与其他地球Q模型很好地匹配。后者表明，当应用它们设计反Q滤波器时，滤波后的地震剖面原则上应具有可比性。
The decrease in the amplitude and resolution of seismic waves with depth, the so-called earth Q effects, can be conveniently defined in terms of frequency-dependent amplitude attenuation and velocity dispersion. In this paper, we modify Kolsky's (1953 Stress Waves in Solids (Oxford: Clarendon)) attenuation–dispersion model so that it has an accurate representation of the velocity dispersion within the seismic band. Such a modification may lead to at least two advantages: (1) an accurate phase correction in inverse Q filtering that follows, and (2) a good match to other earth Q models. The latter suggests that, when applying them to design an inverse Q filter, filtered seismic sections should in principle be comparable with each other.