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Simultaneous estimation of subsurface properties from CSP gatherGold Open Access

Authors: T. Tanaka, H. Mikada and J. Takekawa
Event name: The 22nd International Symposium on Recent Advances in Exploration Geophysics (RAEG 2018)
Session: Geoexploration
Publication date: 24 May 2018
DOI: 10.3997/2352-8265.20140233
Language: English
Info: Extended abstract, PDF ( 541.81Kb )

Summary:
The utilization of S-wave velocity has become an essential task in seismic reflection surveys for lithological properties of subsurface materials. In this research, we applied horizontal component of a common scatter point (CSP) gather produced in the application of the Equivalent Offset Migration (EOM) method to obtain S-wave wavefields. As an AVO analysis of both vertical and horizontal components of the CSP gathers estimates physical properties of subsurface reflectors, we use the full waveform inversion (FWI) technique to estimate the physical properties directly with observed waveforms. Our simple numerical experiments have shown high accuracy, the applicability, and the validity of our method. We would like to propose the processing of CSP gathers with FWI as a method of lithological interpretation of subsurface materials.

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