@ARTICLE{Yang2021,
author={Yang, Q. and Zhou, B. and Riahi, M.K. and Al-Khaleel, M.},
title={Frequency-domain seismic data transformation from point-source to line-source for 2D viscoelastic anisotropic media},
journal={Geophysics},
year={2021},
volume={87},
number={2},
doi={10.1190/geo2021-0166.1},
url={https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121218666&doi=10.1190%2fgeo2021-0166.1&partnerID=40&md5=08fcab005be8bec0f96a1e589363831a},
affiliation={Khalifa University of Science and Technology, Department of Earth Science, Abu Dhabi, United Arab Emirates; Khalifa University of Science and Technology, Department of Applied Mathematics, Abu Dhabi, 46668, United Arab Emirates},
abstract={We present a simple yet effective transform function to convert 3D point-source seismic data to equivalent 2D line-source data, which is required when applying efficient 2D migration and full-waveform inversion to field data collected along a line. By numerically comparing the 3D and corresponding 2D Greenå's tensors in various media, the phase shift around 45¡ and the offset amplitude compensation factor, as well as small fluctuations of the amplitude ratios are observed in all nonzero components of the wave-equation solutions. Based on these observations, we derive a transform function comprised of (1) a simple filter for compensating amplitude and phase shift, and (2) stretching scalars for scaling amplitude differences for different components. We employ the 3D and 2D analytical wave solutions in various homogeneous media to demonstrate the accuracy of the proposed transform function, and then apply it to a heterogeneous, viscoelastic, anisotropic model and a modified Marmousi model. All of these results indicate that the proposed transform function is applicable for the conversion of point-source data to equivalent line-source data for imaging 2D subsurface structure. © 2022 Society of Exploration Geophysicists.},
author_keywords={frequency-domain;  signal processing;  wave propagation},
document_type={Article}
}

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By numerically comparing the 3D and corresponding 2D Greenå's tensors in various media, the phase shift around 45¡ and the offset amplitude compensation factor, as well as small fluctuations of the amplitude ratios are observed in all nonzero components of the wave-equation solutions. Based on these observations, we derive a transform function comprised of (1) a simple filter for compensating amplitude and phase shift, and (2) stretching scalars for scaling amplitude differences for different components. We employ the 3D and 2D analytical wave solutions in various homogeneous media to demonstrate the accuracy of the proposed transform function, and then apply it to a heterogeneous, viscoelastic, anisotropic model and a modified Marmousi model. All of these results indicate that the proposed transform function is applicable for the conversion of point-source data to equivalent line-source data for imaging 2D subsurface structure. © 2022 Society of Exploration Geophysicists.","author_keywords":"frequency-domain; signal processing; wave propagation","document_type":"Article","bibtex":"@ARTICLE{Yang2021,\nauthor={Yang, Q. and Zhou, B. and Riahi, M.K. and Al-Khaleel, M.},\ntitle={Frequency-domain seismic data transformation from point-source to line-source for 2D viscoelastic anisotropic media},\njournal={Geophysics},\nyear={2021},\nvolume={87},\nnumber={2},\ndoi={10.1190/geo2021-0166.1},\nurl={https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121218666&doi=10.1190%2fgeo2021-0166.1&partnerID=40&md5=08fcab005be8bec0f96a1e589363831a},\naffiliation={Khalifa University of Science and Technology, Department of Earth Science, Abu Dhabi, United Arab Emirates; Khalifa University of Science and Technology, Department of Applied Mathematics, Abu Dhabi, 46668, United Arab Emirates},\nabstract={We present a simple yet effective transform function to convert 3D point-source seismic data to equivalent 2D line-source data, which is required when applying efficient 2D migration and full-waveform inversion to field data collected along a line. 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