Abstract
Using the occurrence characteristics of bubble plumes in the South China Sea as a reference, this paper continues to study the seismic responses produced by bubble plumes in the cold seepage active region. To make the plume modelling scheme more reasonable, we modified the original modelling scheme and reconstructed a plume water body model based on the variation of its radius as bubbles rise in seawater. The plume seismic records of shot gathers were obtained by forward simulation. The seismic records of single shot show obvious characteristics of a scattering wave field and the periodic characteristics of the model. Seismic records of shot gathers were processed using prestack depth migration. The boundary of its imaging section has a good convergence effect. The migration sections can be imaged distinctly with higher accuracy. The aforementioned studies once again laid a foundation for the further study of the seismic responses produced by plumes. They also gradually probed a more suitable seismic data processing method for plumes and provided a theoretical guidance for the identification of plumes.
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Foundation item: The National Natural Science Foundation under contract No. 41306050; the Science and Technology Project of Guangdong Province under contract No. 2014A010103030; the Natural Science Foundation of Guangdong Province under contract No. 2015A030313617; the National Marine Important Charity Special Foundation under contract No. 201305019.
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Li, C., Gou, L., You, J. et al. Further studies on the numerical simulation of bubble plumes in the cold seepage active region. Acta Oceanol. Sin. 35, 118–124 (2016). https://doi.org/10.1007/s13131-016-0803-3
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DOI: https://doi.org/10.1007/s13131-016-0803-3