Sub‐basalt depth imaging using simultaneous joint inversion of seismic and electromagnetic (MT) data: A CRB field study

Integration of seismic and magnetotelluric data for sub‐basalt imaging in the Columbia River Basin is implemented in a prestack depth migration (PSDM) workflow by means of simultaneous joint inversion of seismic and magnetotelluric residuals. The layer‐stripping joint inversion and PSDM workflow is repeated iteratively to generate an improved image of the sub‐basalt section when compared to time‐domain results. The successful first application of simultaneous PSDM‐joint inversion of seismic and electromagnetic data for a sub‐basalt imaging case suggests that the methodology could be applied to other land or marine sub‐basalt prospects.