Elastic waveform inversion using Gauss-Newton method

Date

2005-01-01

Author

Sheen, Dong-hoon
Baag, Chang-eob
Tuncay, Kağan
Ortoleva, Peter J.

Metadata

Show full item record

Item Usage Stats

91
views

0
downloads

Seismic waveform inversion has been solved usually by a gradient type approach for acoustic media. In this paper, we present an elastic waveform inversion method based on the Gauss‐Newton method. Elastic wave propagation simulation and inversion are both implemented in the time domain. The partial derivative wavefields are computed explicitly using convolutions of forward and reciprocal wavefields. Numerical experiments show that the Gauss‐Newton elastic waveform inversion significantly improves of resolving power and convergence rate over the gradient type inversion.

Subject Keywords

Full-Waveform, Subsalt Imaging, Wave equations

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85055893825&origin=inward
https://hdl.handle.net/11511/74216

DOI

https://doi.org/10.1190/1.2148036

Conference Name

SEG Technical Program Expanded Abstracts (6 - 11 Kasım 2005 )

Collections

Department of Civil Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Near-field scanning in the time domain on a spherical surface - A formulation using the free-space Green's function Koc, S; Aydın Çivi, Hatice Özlem; Buyukdura, OM (2001-10-01) Two formulations for determining the characteristics of an unknown source of acoustic waves using the measurement of its field at its near zone are presented. The measurement in both cases is to be performed on a spherical scan surface which encapsulates the source. The first is for an ideal probe which measures the field at its location. The knowledge of the field is sufficient; its normal derivative is not required. In the second formulation a realistic probe is considered. This time it is required only t...
Transient waves in viscoelastic cylindrical layered media Abu Alshaikh, I; Turhan, D; Mengi, Y (2002-09-01) Propagation of two-dimensional transient waves in viscoelastic cylindrical layered media is investigated. The cylindrical multilayered medium consists of N different isotropic, homogeneous and linearly viscoelastic layers with two discrete relaxation times. A numerical technique which combines the complex Fourier series with the method of characteristics is employed to obtain the solutions. The numerical results are displayed in curves denoting the variations of the stress and displacement components with t...
Super-Gain Optical Parametric Amplification in Dielectric Micro-Resonators via BFGS Algorithm-Based Non-Linear Programming Asirim, Ozum Emre; Kuzuoğlu, Mustafa (2020-03-01) The goal of this paper is to show that super-gain optical parametric amplification can be achieved even in a small micro-resonator using high-intensity ultrashort pump waves, provided that the frequencies of the ultrashort pulses are tuned to maximize the intracavity magnitude of the wave to be amplified, which we call the stimulus wave. In order to accomplish this, we have performed a dispersion analysis via computational modeling of the electric polarization density in terms of the non-linear electron clo...
Frequency invariant beamforming and its application to wideband direction of arrival estimation Babataş, Eren; Candan, Çağatay; Department of Electrical and Electronics Engineering (2008) In this thesis the direction of arrival estimation of wideband signals using frequency invariant beamforming method is examined. The difficulty with the direction of arrival estimation of wideband signals is that it is not possible to obtain a single covariance matrix valid for the whole frequency spectrum of the signal. There are various methods proposed in the literature to overcome this difficulty. The common aim of all the methods is to obtain a composite covariance matrix for the overall band of the si...
A new differential formulation of acoustic scattering by rotationally symmetrical penetrable scatterers Günalp, Nilgün; TOSUN, H (1994-07-01) A new differential formulation is presented for acoustic wave scattering from rotationally symmetric penetrable bodies. The numerical implementation of this formulation is fairly simple, and comprises basically the construction of the state-transition matrix of a system of differential equations and the solution of a matrix equation. The validity and the accuracy of the numerical scheme are tested considering objects of known scattering behavior. Other numerical applications are also presented to demonstrat...

Citation Formats

D.-h. Sheen, C.-e. Baag, K. Tuncay, and P. J. Ortoleva, “Elastic waveform inversion using Gauss-Newton method,” Texas, Amerika Birleşik Devletleri, 2005, p. 1743, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85055893825&origin=inward.