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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Standard linear solid Q model for attenuation and dispersion ： ウィキペディア英語版 Standard linear solid Q model for attenuation and dispersion A standard linear solid Q model (SLS) for attenuation and dispersion is one of many mathematical Q models that gives a definition of how the earth responds to seismic waves. When a plane wave propagates through a homogeneous viscoelastic medium, the effects of amplitude attenuation and velocity dispersion may be combined conveniently into a single dimensionless parameter, Q, the medium-quality factor. Transmission losses may occur due to friction or fluid movement, and whatever the physical mechanism, they can be conveniently described with an empirical formulation where elastic moduli and propagation velocity are complex functions of frequency. Ursin and Toverud〔Ursin B. and Toverud T. 2002 Comparison of seismic dispersion and attenuation models. Studia Geophysica et Geodaetica 46, 293–320.〕 compared different Q models including the above model (SLS-model). In order to compare the different models they considered plane-wave propagation in a homogeneous viscoelastic medium. They used the Kolsky-Futterman model as a reference and studied the SLS model. This model was compared with the Kolsky-Futterman model. The Kolsky-Futterman model was first described in the article ‘Dispersive body waves’ by Futterman (1962).〔Futterman (1962) ‘Dispersive body waves’. Journal of Geophysical Research 67. p.5279-91〕 ==Kolsky's attenuation-dispersion model== The Kolsky model assumes the attenuation α(w) to be strictly linear with frequency over the range of measurement:〔Wang 2008, p. 18, sec. 2.1: Kolsky's attenuation-dispersion model〕 :$\backslash alpha=\backslash frac\; \backslash quad\; (1)$ And defines the phase velocity as: :$\backslash frac\; =\backslash frac\; (1-\backslash frac\; ln\; |\backslash frac|)\; \backslash quad\; (2)$ 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Standard linear solid Q model for attenuation and dispersion」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.