Metadata only
Date
2022-09Type
- Journal Article
Abstract
Constant Q, also called frequency-independent Q, is a phenomenological assumption often used in practice for dissipative wave propagation in both forward and inverse seismic modelling. A constant Q dissipative model generally results in a temporal convolution-type wave equation, which is computationally costly to solve by a time-domain numerical modelling method. In this paper, we use the recently proposed weighting function method to derive the nearly constant Q wave equations in differential form for viscoelastic transversely isotropic media. These wave equations explicitly involve specified Q parameters, which is convenient for time-domain waveform modelling and inversion. As numerical examples, we analyse the nearly constant Q behaviour of the proposed model , nearly constant Q wave reflection and wave propagation in a heterogeneous case. Show more
Publication status
publishedExternal links
Journal / series
Geophysical ProspectingVolume
Pages / Article No.
Publisher
Wiley-BlackwellSubject
Anisotropy; Attenuation; Modelling; Seismic; WaveMore
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