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	Provedor de dados 5 (1) Autor Ker, Stephan (1) Le Gonidec, Yves (1) Palavra-chave Anelasticity (1) Q factor (1) Seismic attenuation (1) Seismic data analysis (1) Tipo do documento Text (1) Ano 2020 (1) País France (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Filtering of a Ricker wavelet induced by anelastic seismic wave propagation and reflection 5 Ker, Stephan; Le Gonidec, Yves. A varying Q factor with depth induces modifications of seismic wave features due to anelastic propagation but also reflections at the discontinuities. Standard signal analysis methods often neglect the reflection contribution when assessing Q values from seismic data. We have developed an analytical quantification of the cumulative effects of both the propagation and reflection contributions by considering the Kjartansson's model and a seismic plane wave at normal incidence on a step-like discontinuity. We show that the cumulative effects are equivalent to a frequency filter characterized by a bandform and phase that both depend on the ratio between the elastic and anelastic contrasts. When considering this filter applied to a Ricker wavelet, we establish... Tipo: Text Palavras-chave: Seismic attenuation; Q factor; Anelasticity; Seismic data analysis. Ano: 2020 URL: https://archimer.ifremer.fr/doc/00640/75240/75398.pdf Registros recuperados: 1 Primeira ... 1 ... Última

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