Depth of investigation in MT method
Speaker: Hsiu-Po Yeh
Abstract
The diffusive nature of electromagnetic (EM) energy propagation in the Earth does not allow the imaging of sharp boundaries. When viewing the inversion result, it is important to make sure the existence of the feature. One way to estimate the depth of investigation (DOI) in magnetotelluric (MT) survey is to use constrained inversion. In this approach, the locations of interfaces are defined from other geological and geophysical data. However, this way is a roughly test. We also try to apply the DOI index method to estimate the DOI in MT survey. It displays a good image for final interpretation. Inversions used the same MT data, mesh and control parameters. In practice, we advocate that all of these inversions be carried out prior to final interpretation
Reference
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