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Collection And Analysis Of Seismic Wave Propagation Data Supplement 3 Scattering Of Elastic Plane Waves By An Elliptical Inclusion Or Cavity
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Book Synopsis Collection and Analysis of Seismic Wave Propagation Data. Supplement 3: Scattering of Elastic Plane Waves by an Elliptical Inclusion Or Cavity by : Ivor K. McIvor
Download or read book Collection and Analysis of Seismic Wave Propagation Data. Supplement 3: Scattering of Elastic Plane Waves by an Elliptical Inclusion Or Cavity written by Ivor K. McIvor and published by . This book was released on 1966 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous studies of the scattering of elastic waves have been limited to spherical and cylindrical scatterers. The present study is an investigation of the scattering of a plane compressional wave incident from an arbitrary direction on an elliptical obstacle (either cavity or a rigid inclusion). By varying the ellipticity, shapes ranging from the finite-length slit to the cylinder may be considered. Analytical solutions are obtained for the scattered displacements in the form of product series expansions valid throughout the entire media. Due to the interaction of P-waves and S-waves at the boundary of the scatterer, the boundary conditions are not separable. As a consequence the coefficients of the series solution are determined from a coupled, infinite system of algebraic equations. The solutions are highly convergent, however, and the system can be truncated to a reasonable size for numerical computation. In addition, simplified asymptotic solutions are given for the far-field displacements. It is found that the scattered displacements attenuate like r to the minus one-half power, with the radial displacement associated with the dilatational potential and the tangential displacement associated with the shear potential. The asymptotic solutions are used to obtain the scattered radiation pattern in the far field. Finally, for the special case of a slit the radiation patterns for different directions of incident wave and different ratios of wave length to slit length are compared. (Author).
Book Synopsis Collection and Analysis of Seismic Wave Propagation Data by : David E. Willis
Download or read book Collection and Analysis of Seismic Wave Propagation Data written by David E. Willis and published by . This book was released on 1966 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report summarizes one year of theoretical and applied research on propagation of seismic waves and techniques for analyzing data. The main objectives were to determine the frequency and energy of seismic signatures, and investigate attenuation, patterns of azimuthal radiation from source regions, and methods of determining the type of motion at the source. Natural and artificial sources were studied to develop diagnostic aids for distinguishing between earthquakes and underground nuclear detonations. Equipment for selection, reformatting, and digital-to-analog conversion for digitally recorded LASA data was constructed and is being checked out. Several approaches for using the parallel computational capabilities of optics for LASA data were developed. A study of background noise and reciprocity for teleseismic events as recorded on the bottom of a large fresh water lake has commenced with the emplacement of three-component seismometers in Lake Superior. Array data have been used for crustal studies on the Eastern United States. Digital mode filtering was investigated. A perturbation theory for seismic sources was developed. (Author).
Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Collection and Analysis of Seismic Wave Propagation Data. Supplement 4: Two-dimensional Waves in an Infinite Medium Bounded Internally by a Harmonically Pressurized Ellipse by : Henry N. Pollack
Download or read book Collection and Analysis of Seismic Wave Propagation Data. Supplement 4: Two-dimensional Waves in an Infinite Medium Bounded Internally by a Harmonically Pressurized Ellipse written by Henry N. Pollack and published by . This book was released on 1966 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper studies the role of the cavity shape in determining the two-dimensional far-field radiation from a pressurized source. The radiation patterns are obtained for both the longitudinal and transverse waves radiating from an elliptical region that varies from a line source to a circular source. The results of several cases show that: (1) for all noncicular boundzries the shear wave exists and consistently shows a four-lobed pattern of alternate polarity. (2) the ratio of wavelength to cavity ecicumference and the cavity shape (ellipticity) have a strong influence on the radiation patter. (Author).
Book Synopsis Sponsored Research Reports by University of Michigan Faculty and Staff by : University of Michigan. Office of Research Administration
Download or read book Sponsored Research Reports by University of Michigan Faculty and Staff written by University of Michigan. Office of Research Administration and published by . This book was released on 1965 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bulletin of VELA Uniform Research Publications by : University of Michigan. VESIAC.
Download or read book Bulletin of VELA Uniform Research Publications written by University of Michigan. VESIAC. and published by . This book was released on 1965 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Wave Propagation by : J. E. White
Download or read book Seismic Wave Propagation written by J. E. White and published by SEG Books. This book was released on 2000 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Wave Propagation and Scattering in the Heterogeneous Earth by : Haruo Sato
Download or read book Seismic Wave Propagation and Scattering in the Heterogeneous Earth written by Haruo Sato and published by Springer. This book was released on 1998 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on recent developments in the area of seismic wave propagation and scattering, this text combines information from numerous sources to present a coherent introduction to the theory of scattering in acoustic and elastic materials. With the emphasis firmly on the lithosphere, the book includes analyses of observations using the theoretical methods developed. Written for advanced undergraduates and beginning graduates of geophysics and planetary sciences, this is also of interest to civil engineers, seismologists, acoustical engineers, and others interested in wave propagation through inhomogeneous elastic media.
Book Synopsis Seismic Wave Propagation in Non-Homogeneous Elastic Media by Boundary Elements by : George D. Manolis
Download or read book Seismic Wave Propagation in Non-Homogeneous Elastic Media by Boundary Elements written by George D. Manolis and published by Springer. This book was released on 2018-06-15 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the mathematical potential and computational efficiency of the Boundary Element Method (BEM) for modeling seismic wave propagation in either continuous or discrete inhomogeneous elastic/viscoelastic, isotropic/anisotropic media containing multiple cavities, cracks, inclusions and surface topography. BEM models may take into account the entire seismic wave path from the seismic source through the geological deposits all the way up to the local site under consideration. The general presentation of the theoretical basis of elastodynamics for inhomogeneous and heterogeneous continua in the first part is followed by the analytical derivation of fundamental solutions and Green's functions for the governing field equations by the usage of Fourier and Radon transforms. The numerical implementation of the BEM is for antiplane in the second part as well as for plane strain boundary value problems in the third part. Verification studies and parametric analysis appear throughout the book, as do both recent references and seminal ones from the past. Since the background of the authors is in solid mechanics and mathematical physics, the presented BEM formulations are valid for many areas such as civil engineering, geophysics, material science and all others concerning elastic wave propagation through inhomogeneous and heterogeneous media. The material presented in this book is suitable for self-study. The book is written at a level suitable for advanced undergraduates or beginning graduate students in solid mechanics, computational mechanics and fracture mechanics.
Book Synopsis 3C Seismic and VSP: Converted waves and vector wavefield applications by : James Gaiser
Download or read book 3C Seismic and VSP: Converted waves and vector wavefield applications written by James Gaiser and published by SEG Books. This book was released on 2016-06-30 with total page 637 pages. Available in PDF, EPUB and Kindle. Book excerpt: 3C seismic applications provide enhanced rock property characterization of the reservoir that can complement P-wave methods. Continued interest in converted P- to S-waves (PS-waves) and vertical seismic profiles (VSPs) has resulted in the steady development of advanced vector wavefield techniques. PS-wave images along with VSP data can be used to help P-wave interpretation of structure in gas obscured zones, of elastic and fluid properties for lithology discrimination from S-wave impedance and density inversion in unconventional reservoirs, and of fracture characterization and stress monitoring from S-wave birefringence (splitting) analysis. The book, which accompanies the 2016 SEG Distinguished Instructor Short Course, presents an overview of 3C seismic theory and practical application: from fundamentals of PS-waves and VSPs, through to acquisition and processing including interpretation techniques. The emphasis is on unique aspects of vector wavefields, anisotropy, and the important relationships that unify S-waves and P-waves. Various applications and case studies demonstrate image benefits from PS-waves, elastic properties and fluid discrimination from joint inversion of amplitude variations with offset/angle (AVO/A), and VSP methods for anisotropic velocity model building and improved reservoir imaging. The book will be of interest to geophysicists, geologists, and engineers, especially those involved with or considering the use of AVO/A inversion, fracture/stress characterization analyses, or interpretation in gas-obscured reservoirs.
Book Synopsis Scattering and Attenuation of Seismic Waves by : Keiiti Aki
Download or read book Scattering and Attenuation of Seismic Waves written by Keiiti Aki and published by Birkhauser. This book was released on 1988 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Propagation of Transient Elastic Waves in Stratified Anisotropic Media by : J.H.M.T. van der Hijden
Download or read book Propagation of Transient Elastic Waves in Stratified Anisotropic Media written by J.H.M.T. van der Hijden and published by Elsevier. This book was released on 2016-05-24 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt: Seismic waves are one of the standard diagnostic tools used to determine the mechanical parameters (volume density of mass, compressibility, elastic stiffness) in the interior of the earth and the geometry of subsurface structures. There is increasing evidence that in the interpretation of seismic data - especially shear-wave data - the influence of anisotropy must be taken into account.This volume presents a method to compute the seismic waves that are generated by an impulsive source in a stratified anisotropic medium. Although written with the seismic applications in mind, the method that is developed is not limited to solid-earth geophysics. In fact, the methods discussed in this monograph are applicable wherever waves propagate in stratified, anisotropic media. The standard approach to this problem is to employ Fourier transformations with respect to time and with respect to the horizontal spatial coordinates. To obtain numerical results, the relevant inverse transformations then have to be evaluated numerically. In this monograph the problem is, in contrast to the standard approach, solved by applying the Cagniard-de Hoop method and by representing the wave field as a sum of generalized rays. With this method, the computational results can be obtained relatively easily with any degree of accuracy, and with considerably less computation time. For completeness, analysis of acoustic waves in stratified isotropic media is included. Furthermore, for large horizontal or vertical source-receiver separations very efficient approximations are derived. Several examples and applications are given.
Book Synopsis Collection and Analysis of Seismic Wave Propagation Data. Supplement 1: Analog Computer Measurement of Time-varying Power Spectra by : Vernon L. Larrowe
Download or read book Collection and Analysis of Seismic Wave Propagation Data. Supplement 1: Analog Computer Measurement of Time-varying Power Spectra written by Vernon L. Larrowe and published by . This book was released on 1966 with total page 215 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Introduction to Echo Analysis by : Gary Roach
Download or read book An Introduction to Echo Analysis written by Gary Roach and published by Springer Science & Business Media. This book was released on 2009-01-08 with total page 323 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an introduction to scattering phenomena and a guide to the technical requirements for investigating wave scattering problems. It reviews the principal mathematical topics required for approaching wave propagation and scattering problems, and shows how to develop the required solutions. The emphasis is on concepts and results rather than on the fine detail of proof. Each chapter ends with a bibliography pointing to more detailed proofs.
Book Synopsis Seismic Wave Propagation and Scattering in the Heterogeneous Earth by : Haruo Sato
Download or read book Seismic Wave Propagation and Scattering in the Heterogeneous Earth written by Haruo Sato and published by Springer. This book was released on 2013-01-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on recent developments in the area of seismic wave propagation and scattering, this text combines information from numerous sources to present a coherent introduction to the theory of scattering in acoustic and elastic materials. With the emphasis firmly on the lithosphere, the book includes analyses of observations using the theoretical methods developed. Written for advanced undergraduates and beginning graduates of geophysics and planetary sciences, this is also of interest to civil engineers, seismologists, acoustical engineers, and others interested in wave propagation through inhomogeneous elastic media.
Book Synopsis Collection and Analysis of Seismic Wave Propagation Data by :
Download or read book Collection and Analysis of Seismic Wave Propagation Data written by and published by . This book was released on 1966 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Elastic Waves in Layered Media by : William Maurice Ewing
Download or read book Elastic Waves in Layered Media written by William Maurice Ewing and published by . This book was released on 1957 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
