Mode-Converted (P-SV) Waves for Imaging Thin Intercalated Basaltic Layers and Their Possible Geologic Implications |
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Authors: | D K Pandey A Pandey S Rajan |
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Institution: | (1) National Centre for Antarctic and Ocean Research, Vasco da Gama, Goa, 403804, India;(2) Centre for Climate Change Research, IITM, Pune, 411008, India |
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Abstract: | The subsurface imaging using conventional seismic reflection technique is challenging in areas where high velocity rocks such
as basalts are underlain by low velocity rocks. The seismic image quality worsens in the presence of intercalated sediments
within the basaltic layers. In the recent years, the multicomponent seismic exploration technique has drawn great attention
because it reduces the ambiguity in seismic imaging, enlarges the S-wave information, and improves the prediction and identification
of reservoir fluids. Improvements in sub-basalt imaging techniques could hold highly significant geologic implications such
as resource exploration and identifying permanent geochemical trapping potential (such as for carbon sequestration studies).
In this article, we examine the possibility of utilizing mode-converted (P-SV) waves for sub-basalt imaging as well as likely
complicacies one may expect in such processes. |
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