Discrete wavenumber method

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August undefined, 2024

WebSH Wave Number Green’s Function for a Layered, Elastic Half-Space. Part I: Theory and Dynamic Canyon Response by the Discrete Wave Number Boundary Element Method (PDF) SH Wave Number Green’s Function for a Layered, Elastic Half-Space.

Propagation of Elastic Waves: Fundamentals SpringerLink

WebDec 4, 2024 · Because the contribution of surface waves can be simply obtained by the residue theorem, the computation of SW H / V of cap-layered medium is faster than that of FW H / V evaluated by discrete wavenumber method and contour integration method. WebSynthetic seismograms recorded with a logging-while-drilling (LWD) tool in the presence of slow formation are computed by the discrete wavenumber method. Monopole, dipole, … good internet providers for cheap

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WebABSTRACTS Synthetic seismograms recorded with a logging-while-drilling (LWD) tool in the presence of slow formation are computed by the discrete wavenumber method. Monopole, dipole, and quadrupole logging tools are simulated with a source center frequency of 4 kHz. WebJan 1, 2011 · The wavenumber integration technique is basically a numerical implementation of the integral transform technique for horizontally stratified media … WebDiscrete wavenumber methods fall into three categories: the discrete wavenumber fictitious force method, the discrete wavenumber finite element methodand the discrete … good internet providers in baltimore

Discrete wavenumber solutions to numerical wave …

Wavenumber Integration Techniques SpringerLink

WebAug 26, 1998 · The displacement‐stress vectors are propagated through the layers using the Thomson–Haskell method. Only the well‐bonded configuration is investigated. In the time domain, the effects of the source center frequency on synthetic full waveform microseismograms computed using the discrete wavenumber method are investigated. WebThe method utilizes a discrete wavenumber decomposition for the horizontal dependence of the wave motion in terms of a Fourier-Bessel series. The series representation is exact if summed to infinity and consequently eliminates the need to integrate a continuous Bessel transform numerically. good internet providers in texasWebSep 1, 1989 · The discrete wavenumber‐boundary integral equation method is formulated for this case and is applied to the problem of diffraction of an elastic wave field by a ridge‐shaped topography. The... good internet providers in michigan

"WebBouchon, M., 1981, A simple method to calculate Green’s functions for elastic layered media: Bulletin of the Seismological Society of America, 71, 959–971. BSSAAP 0037-1106 Crossref Web of Science Google Scholar; Bouchon, M., 2003, A review of the discrete wavenumber method: Pure and Applied Geophysics, 160, 445–465, doi: . " - Discrete wavenumber method

Discrete wavenumber method

WebIn discrete Fourier transform, alias happens when the size N of sampled Fourier modes is less than the actual size of Fourier modes, and in such cases, due to the cyclic … WebDec 1, 1999 · The wavefield on the elements is discretized using high-degree Lagrange interpolants, and integration over an element is accomplished based upon the Gauss-Lobatto-Legendre integration rule. This combination of discretization and integration results in a diagonal mass matrix, which greatly simplifies the algorithm.

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WebMay 1, 1984 · The method utilizes a discrete wavenumber decomposition for the horizontal dependence of the wave motion in terms of a Fourier-Bessel series. The … WebOct 13, 2024 · The discrete wavenumber (DWN) method (e.g., Bouchon, 2003) has been established as a method to calculate complete elastic wavefield, including permanent …

WebApr 11, 2024 · In the first step, the discrete signal is transformed from the spatial domain to the wavenumber domain by two-dimensional DFT. It is complicated to process discrete … WebA boundary integral equation-discrete wavenumber representation method to study wave propagation in multilayered media having irregular interfaces Michel Bouchon , Michel Campillo , and...

Webdiscrete wavenumber summation method. No comparison the heterogeneous formulation and the discrete wavenumber method has been made. The second order approximation to the solid-liquid interface produced seismograms that compared 'well with the discrete wavenumber seismograms. A detailed comparison between the seismograms … WebThe discrete wavenumber method is used to compute synthetic full‐waveform acoustic logs in axisymmetric multilayered boreholes and to perform the …

WebJun 13, 2006 · The actual response is then constructed from these components using an inverse Fourier transform. Since calculations are performed at discrete values of wavenumber, these methods may be termed the wavenumber FEMs/BEMs methods (but are also known as ‘two-and-half dimensional’ (2.5D) methods or ‘generalized plane strain’).

WebJul 31, 2001 · Nowadays, with the dramatic increase in computational ability, the discrete wavenumber integration method (DWIM) (see, e.g., Bouchon and Aki, 1977; Bouchon, … good internet service providersWebThe discrete wave‐number boundary element method is extended to apply to three‐dimensional elastodynamic problems. The method—which was first introduced … good internet service for gamingWebFeb 1, 2008 · The Localized Boundary Integral Equation–Discrete Wavenumber Method for Simulating P-SV Wave Scattering by an Irregular TopographyLocalized Boundary … good internet providers in canadaWebApr 1, 1999 · The method of calculation used is a boundary element method in which the Green’s functions are computed by the discrete wavenumber method. For simplicity, the 2-D elastodynamic diffraction problem is considered. The rock matrix is supposed to be elastic, isotropic and homogeneous, while the cracks are all empty and have the same … good internet services near meWebThe author proposes the discrete wavenumber boundary element method, in which the direct boundary element method is used with the discrete wavenumber Green's function. This combination achieves both the efficiency in … good internet speed for call of dutyWebOct 23, 2024 · Usually, in the discrete wavenumber method (DWN) the horizontal wavenumber is discretized and Fourier analysis permits to go to time domain (see Bouchon and Aki 1977; Bouchon 2003). Theory allows solving the problem of the homogeneous boundary conditions in terms of an eigenvalue problem. good internet providers clevelandWebA boundary integral equation-discrete wavenumber representation method to study wave propagation in multilayered media having irregular interfaces Michel Bouchon , Michel … good internet speed for gaming pc