Center for Modeling of Coupled Subsurface Dynamics
Monitoring subsurface processes

Exploring the subsurface using a generalization of Dix’ classic time-to-depth mapping method

The project’s primary goal is to develop new tools in compressional waves domain for exploring the subsurface by means of a generalization of Dix’ classic time-to-depth mapping method, where velocity estimation constitutes an inherent part.

Interval wave velocity plot
Interval wave velocity estimated along seismic image rays

Main content

The generalized Dix method, based on Dix’ classic method, and recent development of time-to-depth mapping, has the key advantage that it can be applied locally, in the vicinity of some reference ray. Whereas the classic Dix method is based on an assumption of a 1-D subsurface, varying only in depth, the generalized method adopts the assumptions of 3-D seismic time migration. That means the subsurface properties may have a quite general variation with depth, while lateral variations are assumed to be weak or moderate. For some of the implementations of the method, It is planned to utilize an artificial neural networks.

Funded by the VISTA program
VISTA Program (vista.no)