Search results for: elastic-waves-in-random-media

Elastic Waves in Random Media

Author : Serge A. Shapiro
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This book treats various generalizations of the classical O'Doherty-Anstey formula in order to describe stratigraphic filtering effects. These are the effects that can be observed when elastic and electromagnetic waves propagate through multilayered structures. Our aim was to treat this topic in a comprehensive manner and present compact results in a didactically simple way, emphasizing the physics of the wave-propagation phenomena. We do not claim mathematical rigidity in all our derivations, however, we are pleased to have obtained quite simple descriptions of scattering, transmission and reflection of wavefields in acoustic, elastic, and poroelastic media which can be useful for various seismological and non-seismological applications.

Scattering and Attenuation of Seismic Waves

Author : WU
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Reprint from Pure and Applied Geophysics (PAGEOPH), Volume 131 (1989), No. 4

Applied Mechanics Reviews

Author :
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Wave Scattering in Complex Media From Theory to Applications

Author : Bart A. van Tiggelen
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A collection of lectures on a variety of modern subjects in wave scattering, including fundamental issues in mesoscopic physics and radiative transfer, recent hot topics such as random lasers, liquid crystals, lefthanded materials and time-reversal, as well as modern applications in imaging and communication. There is a strong emphasis on the interdisciplinary aspects of wave propagation, including light and microwaves, acoustic and elastic waves, propagating in a variety of "complex" materials (liquid crystals, media with gain, natural media, magneto-optical media, photonic and phononic materials, etc.). It addresses many different items in contemporary research: mesoscopic fluctuations, localization, radiative transfer, symmetry aspects, and time-reversal. It also discusses new (potential) applications in telecommunication, soft matter and imaging.

Wave Propagation in Random Media scintillation

Author : Valerʹi︠a︡n Ilʹich Tatarskiĭ
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Advances in Geophysics

Author : Haruo Sato
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Seismic waves generated by earthquakes have been interpreted to provide us information about the Earth’s structure across a variety of scales. For short periods of less than 1 second, the envelope of seismograms changes significantly with increased travel distance and coda waves are excited by scattering due to randomly distributed heterogeneities in the Earth. Deterministic structures such as horizontally uniform velocity layer models in traditional seismology cannot explain these phenomena. This book focuses on the Earth heterogeneity and scattering effects on seismic waves. Topics covered are recent developments in wave theory and observation including: coda wave analysis for mapping medium heterogeneity and monitoring temporal variation of physical properties, radiation of short-period seismic waves from an earthquake fault, weak localization of seismic waves, attenuation of seismic waves in randomly porous media, synthesis of seismic wave envelopes in short periods, and laboratory investigations of ultrasonic wave propagation in rock samples. Understanding new methods for the analysis of short-period seismic waves to characterize the random heterogeneity of the Earth on many scales Observations of seismic wave scattering Discussion of techniques for mapping medium heterogeneity and for monitoring temporal change in medium characteristics Up-to-date techniques for the synthesis of wave envelopes in random media

Proceedings

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Bulletin

Author : Polska Akademia Nauk
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Multiple Scattering of Waves in Random Media and Random Rough Surfaces

Author : V. K. Varadan
File Size : 87.66 MB
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Scattering and Attenuation of Seismic Waves

Author : Keiiti Aki
File Size : 44.32 MB
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The Journal of the Acoustical Society of America

Author : Acoustical Society of America
File Size : 57.15 MB
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Petroleum Abstracts

Author :
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Revue roumaine de g ologie g ophysique et g ographie

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Expanded Abstracts with Biographies

Author :
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Monitoring a Comprehensive Test Ban Treaty

Author : Eystein S. Husebye
File Size : 53.87 MB
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Proceedings of the NATO Advanced Study Institute, Alvor, Algarve, Portugal, January 23-February 1, 1995

Multiple Scattering and Waves in Random Media

Author : Pao Liu Chow
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Seismic Wave Propagation and Scattering in the Heterogeneous Earth Second Edition

Author : Haruo Sato
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Seismic waves - generated both by natural earthquakes and by man-made sources - have produced an enormous amount of information about the Earth's interior. In classical seismology, the Earth is modeled as a sequence of uniform horizontal layers (or spherical shells) having different elastic properties and one determines these properties from travel times and dispersion of seismic waves. The Earth, however, is not made of horizontally uniform layers, and classic seismic methods can take large-scale inhomogeneities into account. Smaller-scale irregularities, on the other hand, require other methods. Observations of continuous wave trains that follow classic direct S waves, known as coda waves, have shown that there are heterogeneities of random size scattered randomly throughout the layers of the classic seismic model. This book focuses on recent developments in the area of seismic wave propagation and scattering through the randomly heterogeneous structure of the Earth, with emphasis on the lithosphere. The presentation combines information from many sources to present a coherent introduction to the theory of scattering in acoustic and elastic materials and includes analyses of observations using the theoretical methods developed. The second edition especially includes new observational facts such as the spatial variation of medium inhomogeneities and the temporal change in scattering characteristics and recent theoretical developments in the envelope synthesis in random media for the last ten years. Mathematics is thoroughly rewritten for improving the readability. Written for advanced undergraduates or beginning graduate students of geophysics or planetary sciences, this book should also be of interest to civil engineers, seismologists, acoustical engineers, and others interested in wave propagation through inhomogeneous elastic media.

Proceedings Annual Meeting of the Society of Engineering Science inc

Author : Society of Engineering Science
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Mechanics of Electromagnetic Materials and Structures

Author : Jong Seh Lee
File Size : 80.21 MB
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Mechanics Today

Author : S. Nemat-Nasser
File Size : 71.79 MB
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