From Airborne Data Inversion to In-Depth Analysis - Data and Model Evaluation

From Airborne Data Inversion to In-Depth Analysis (AIDA) is a common project of selected university institutions and federal state service. It aims to investigate new and advanced methods and applications for joint electromagnetic, electric and magnetic data sets. The actual special interest of the project is to develop a decision support system whether 1D or 3D inversion schemes are needed. Therefore, profile (1D) or grid (2D) gradients are evaluated for decision making. Parallel to this work an enhanced 1D inversion and a new 3D inversion scheme are developed. The main commons are boundary conditions and best model to data fits. In order to estimate the quality of the numerical models, geological models based on bore hole and other structural data with given internal physical parameters as conductivity, susceptibility etc. are developed and used for forward calculation. The resulting artificial data are again inverted. The inversion results must then meet the originally posed data. Additionally, a joint 1D inversion of radio-magnetotellurics, transient (time domain) electromagnetics, frequency domain electromagnetics and VLF is being work upon. This work aims to combine the advantages of the different methods for better model subsurface characterization. All model results will be compared in a common visual 3D system.