Redirigiendo al acceso original de articulo en 15 segundos...
Inicio  /  Geosciences  /  Vol: 8 Núm: 12 Par: Decembe (2018)  /  Artículo
ARTÍCULO
TITULO

High-Resolution Seismic Data Deconvolution by A0 Algorithm

Fedor Krasnov and Alexander Butorin    

Resumen

Sparse spikes deconvolution is one of the oldest inverse problems, which is a stylized version of recovery in seismic imaging. The goal of sparse spike deconvolution is to recover an approximation of a given noisy measurement T = W ∗ r + W 0 . Since the convolution destroys many low and high frequencies, this requires some prior information to regularize the inverse problem. In this paper, the authors continue to study the problem of searching for positions and amplitudes of the reflection coefficients of the medium (SP&ARCM). In previous research, the authors proposed a practical algorithm for solving the inverse problem of obtaining geological information from the seismic trace, which was named A 0 . In the current paper, the authors improved the method of the A 0 algorithm and applied it to the real (non-synthetic) data. Firstly, the authors considered the matrix approach and Differential Evolution approach to the SP&ARCM problem and showed that their efficiency is limited in the case. Secondly, the authors showed that the course to improve the A 0 lays in the direction of optimization with sequential regularization. The authors presented calculations for the accuracy of the A 0 for that case and experimental results of the convergence. The authors also considered different initialization parameters of the optimization process from the point of the acceleration of the convergence. Finally, the authors carried out successful approbation of the algorithm A 0 on synthetic and real data. Further practical development of the algorithm A 0 will be aimed at increasing the robustness of its operation, as well as in application in more complex models of real seismic data. The practical value of the research is to increase the resolving power of the wave field by reducing the contribution of interference, which gives new information for seismic-geological modeling.

 Artículos similares

       
 
Gemma Aiello, Marina Iorio, Flavia Molisso and Marco Sacchi    
Submarine canyons are geomorphologic lineaments engraving the slope/outer shelf of continental margins. These features are often associated with significant geologic hazard when they develop close to densely populated coastal zones. The seafloor of Naple... ver más
Revista: Geosciences

 
Achyut Mishra, Lukas Pajank and Ralf R. Haese    
Coastal to shallow-marine deposits are inherently highly heterogeneous in sediment composition due to variable depositional conditions. Representation of heterogeneity at sub-seismic scales is required for understanding flow and geochemical processes and... ver más
Revista: Geosciences

 
Brandi L. Lenz, Derek E. Sawyer, Benjamin Phrampus, Kathy Davenport and Ashley Long    
A series of large blocks from the 44-North Slide, offshore Oregon, impacted the seafloor with sufficient force to induce a broad zone of deformation. In 2017, we acquired a seismic profile from the headwall area to the outer toe of this slide. Previous w... ver más
Revista: Geosciences

 
Kohei Fujita, Tsuyoshi Ichimura, Motoki Kazama, Susumu Ohno and Shingo Sato    
A soil-amplification analysis method is developed that uses high-resolution ground data and a three-dimensional nonlinear dynamic finite-element method to screen for possible areas of seismic damage to buried water-distribution pipeline networks. The met... ver más
Revista: Geosciences

 
Martina Misuraca, Francesca Budillon, Renato Tonielli, Gabriella Di Martino, Sara Innangi and Luciana Ferraro    
A closely spaced set of high-resolution Chirp-Sonar and Sparker profiles and swath bathymetric data was acquired in 2013 for the I-AMICA Project off the Volturno River mouth (Southern Tyrrhenian Sea) by the Istituto per l’Ambiente Marino Costiero (... ver más
Revista: Geosciences