We discuss our progress in migrating multi-component ocean-bottom data, focusing on joint inversion of up- and down-going data using two-way acoustic wave equation. We observe that applying RTM to up-going energy and down-going energy shows different illumination of the sub-surface. Migration of the up-going data gives strong reflector amplitude and weaker artifacts. However, its area of sub-surface illumination is narrower than migrating with the down-going signal due to mirror imaging. In addition, a new class of artifacts appears because of the injection of receiver wavefields with the ocean-bottom geometry. We propose a joint-inversion scheme that can constructively achieve three goals; (1) combining the up- and down-going migration result, (2) removing spurious artifacts in the final reflectivity model and (3) migrating multi-components ocean bottom data with only acoustic modeling.
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