Print Email Facebook Twitter Singular-value decomposition analysis of source illumination in seismic interferometry by multidimensional deconvolution Title Singular-value decomposition analysis of source illumination in seismic interferometry by multidimensional deconvolution Author Minato, S. Matsuoka, T. Tsuji, T. Faculty Civil Engineering and Geosciences Department Geoscience & Engineering Date 2013-04-10 Abstract We have developed a method to analytically evaluate the relationship between the source-receiver configuration and the retrieved wavefield in seismic interferometry performed by multidimensional deconvolution (MDD). The MDD method retrieves the wavefield with the desired source-receiver configuration from the observed wavefield without source information. We used a singular-value decomposition (SVD) approach to solve the inverse problem of MDD. By introducing SVD into MDD, we obtained quantities that revealed the characteristics of the MDD inverse problem and interpreted the effect of the initial source-receiver configuration for a survey design. We numerically simulated the wavefield with a 2D model and investigated the rank of the incident field matrix of the MDD inverse problem. With a source array of identical length, a sparse and a dense source distribution resulted in an incident field matrix of the same rank and retrieved the same wavefield. Therefore, the optimum source distribution can be determined by analyzing the rank of the incident field matrix of the inverse problem. In addition, the introduction of scatterers into the model improved the source illumination and effectively increased the rank, enabling MDD to retrieve a better wavefield. We found that the ambiguity of the wavefield inferred from the model resolution matrix was a good measure of the amount of illumination of each receiver by the sources. We used the field data recorded at the two boreholes from the surface sources to support our results of the numerical modeling. We evaluated the rank of incident field matrix with the dense and sparse source distribution. We discovered that these two distributions resulted in an incident field matrix of almost the same rank and retrieved almost the same wavefield as the numerical modeling. This is crucial information for designing seismic experiments using the MDD-based approach. Subject survey designdeconvolutionilluminationinversion To reference this document use: http://resolver.tudelft.nl/uuid:de88ae24-a2df-41af-b86a-fc81828eedc6 DOI https://doi.org/10.1190/geo2012-0245.1 Publisher Society of Exploration Geophysicists ISSN 0016-8033 Source https://doi.org/10.1190/geo2012-0245.1 Source Geophysics, 78 (3), 2013 Part of collection Institutional Repository Document type journal article Rights © 2013 Society of Exploration Geophysicists Files PDF Minato_2013.pdf 2.42 MB Close viewer /islandora/object/uuid:de88ae24-a2df-41af-b86a-fc81828eedc6/datastream/OBJ/view