Acoustic effects in the deformation of structually inhomogeneous media

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• 作者：I. Ya. Chebotareva ; I. A. Volodin ; V. V. Dryagin
• 关键词：acoustic and seismic emission ; structurally inhomogeneous medium ; rock ; modulation instability ; Klimontovich S entropy
• 刊名：Acoustical Physics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：63
• 期：1
• 页码：86-94
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Acoustics;
• 出版者：Pleiades Publishing
• ISSN：1562-6865
• 卷排序：63

文摘

The paper demonstrates that during triaxial loading of a core sample of dry sandstone, genetically related frequency ranges form in the waveguide, which are significantly spatially separated, but have a similar dynamics. This is explained by the authors' previously suggested model for the generation of a low-frequency branch of seismic emission as a result of amplitude instability of the seismic envelopes of acoustic oscillations in a structurally inhomogeneous medium.