Akademik Veri Yönetim Sistemi
Yerbilimleri/ Earth Sciences, cilt.26, sa.2, ss.1-14, 2005 (Scopus, TRDizin)
This study analyses inversion of resistivity data widely used in applications for the investigation of shallow subsurface structures by using computer simulations. The models were designed to solve the environmental and karstic problems which are frequently encountered in near surface explorations. Two- and three- dimensional inversions were carried out for each model using the L1 (robust) and L2 (smoothness-constrained) norms and the success of each norm in these models was investigated. In the inversion studies, the Schlumberger, Wenner, pole-pole and dipole-dipole electrode configurations were employed and their performances in defining models were also investigated. Modelling studies showed that the structures buried in shallow depths could easily be determined by inversion while the determination of the deeply buried target structures decreased in the case of the presence of conductive or resistive layers located at or close to the surface. The type of electrode configuration has an important effect on the model determination. The other result of the studies is that the L1-norm is more effective in blocky structures, while the L2- norm yields better results in geological models without sharp changes.