Three-Dimensional Gravity Minimum Support Regularization Inversion Combined with Prior Image Information

In a geophysical inversion, forms of prior information are various. However, it is not easy to obtain prior lithologic or structural information. In order to integrate image information into the geophysical inversion, this paper takes the 3D gravity regularization inversion as an example, integrates prior image information into a minimum support stabilizer, and proposes a new stabilizer. Then, single-block and double-block model tests are designed and implemented. Compared with the result using the minimum support stabilizer, the result of using the new stabilizer can better restores the lithologic and structural distribution of underground anomaly. Besides, the resolution of the gravity method is improved. It can be concluded that the new stabilizer is suitable for 3D gravity inversion, providing a new idea for the integration of prior information in geophysical inversion.